TWI838241B - Automatic controlling system and method for electric assisted bicycle - Google Patents

Abstract

An automatic controlling system for an electric assisted bicycle includes a speed sensor, a cadence sensor, a torque sensor, a power assist control unit, a speed change control unit and a processing unit. The processing unit calculates a human power according to a pedaling frequency sensed by the cadence sensor and a pedaling force sensed by the torque sensor. The processing unit judges whether the speed and human power within the monitoring period are located in one of 2N×2M transition period blocks or located in which of (2N+2M+1) predetermined riding behavior blocks, where N and M are natural numbers respectively. The processing unit adjusts an output power of the power assist control unit and adjusts a speed change ratio controlled by the speed change control unit in accordance with the judgment result.

Description

Automatic control system and method for electric power-assisted bicycle

The present invention relates to an automatic control system and method for an electric power-assisted bicycle, and to an automatic control system and method for an electric power-assisted bicycle capable of automatically adjusting various control parameters in response to various riding behaviors and road conditions.

Electric power-assisted bicycles do not have a pure electric riding mode, but require a hybrid power drive of human power plus electricity, which is fundamentally different from the pure electric mode of electric vehicles. The power provided by the electric power of electric power-assisted bicycles can solve the problem of the effort of riding a bicycle. At the same time, with the help of human power, the range of ordinary electric bicycles can be exceeded under the condition of carrying a small battery, and a longer riding distance can be achieved.

Although electric power-assisted bicycles bring convenience to riders, they also increase the complexity of operation. In addition to controlling the power-assisted level and gear variable system, electric power-assisted bicycles also require adjustment of suspension-related parameters. This increases the burden on riders who are learning to ride electric power-assisted bicycles. For example, when manually adjusting the power-assisted level of an electric power-assisted bicycle, the current gear diameter is often not taken into account, resulting in discomfort. For example, when the power-assisted bicycle level is set to high and the gear diameter is set to the low-speed zone, the rider often misses the step. For another example, when the power-assisted bicycle level is set to low and the gear diameter is set to the high-speed zone, the rider will feel the discomfort of insufficient power-assisted. For example, if the shock absorption compression force of an electric power-assisted bicycle is manually set too small, although the shock absorption effect is good and the comfort is high, the rider's pedaling force is too much absorbed by the shock absorber, making riding more strenuous. If the shock absorption compression resistance of an electric power-assisted bicycle is set high, although the electric power-assisted bicycle can withstand large compression (for example, flying over or passing through large potholes), it will reduce the riding comfort. For another example, the damping rebound of an electric power-assisted bicycle is set at low speeds, which provides good riding comfort, but if there are frequent vibrations at high speeds, the compression stroke may be used up and the buffering may fail. The fast damping rebound setting of an electric bicycle can make the compression stroke recover quickly, so that the bicycle can withstand the next impact immediately, but it will reduce the riding comfort. Obviously, electric bicycles need to automatically adjust various control parameters to cope with various riding behaviors and road conditions.

However, the prior art of automatic adjustment of control parameters of electric power-assisted bicycles only automatically adjusts a single control parameter, such as the gear ratio and the compression damping of the shock absorber. These prior art technologies are obviously still unable to cope with various riding behaviors and road conditions.

In addition, the prior art regarding automatic adjustment of control parameters of electric power-assisted bicycles is also unable to determine the transition period between different riding behaviors (for example, the transition period between starting and coasting riding behaviors) and thus appropriately adjust the control parameters.

Therefore, one of the technical problems that the present invention aims to solve is to provide an automatic control system and method for an electric power-assisted bicycle that can automatically adjust various control parameters in response to various riding behaviors and road conditions.

According to the first preferred specific embodiment of the present invention, the automatic control system for an electric power-assisted bicycle includes a speed sensor, a cadence sensor, a torque sensor, a power-assisted control unit, a speed control unit, and a processing unit. The speed sensor is used to sense the speed of the electric power-assisted bicycle. The cadence sensor is used to sense the pedaling frequency of the electric power-assisted bicycle. The torque sensor is used to sense the pedaling force of the electric power-assisted bicycle. The processing unit is electrically connected to the speed sensor, the cadence sensor, the torque sensor, the power-assisted control unit, and the speed control unit, respectively. The processing unit calculates human power based on the pedaling frequency and the pedaling force. The processing unit stores 2N speed thresholds, 2M human power thresholds, (2N+2M+1) predetermined riding behavior blocks, and 2N×2M transition period blocks, where N and M are natural numbers. The (2N+2M+1) predetermined riding behavior blocks and 2N×2M transition period blocks are in the two-dimensional quadrant defined by speed and human power, and are pre-planned based on the 2N speed thresholds and 2M human power thresholds. In the two-dimensional quadrant, 2N×2M transition period blocks are interspersed between (2N+2M+1) predetermined riding behavior blocks, so that each predetermined riding behavior block is not adjacent to other predetermined riding behavior blocks. Each predetermined riding behavior block has its own set assist power and its own set gear ratio. The processing unit performs the following steps: (a1) reading the speed and human power during the monitoring period; (b1) determining whether the speed and human power are within one of the 2N×2M transition period blocks; (c1) if the determination result of step (b1) is negative, determining which of the (2N+2M+1) predetermined riding behavior blocks the speed and human power are within; and (d1) adjusting the power assist control unit to output the set power assist of the predetermined riding behavior block for control, and adjusting the speed change control unit to control with the set speed change ratio of the predetermined riding behavior block.

Furthermore, the automatic control system according to the first preferred embodiment of the present invention also includes a shock absorber control unit. The shock absorber control unit is electrically connected to the processing unit. Each predetermined riding behavior block has its own set compression damping amount. In step (d1), the processing unit adjusts the shock absorber control unit to control the set compression damping amount of the predetermined riding behavior block.

Furthermore, each predetermined riding behavior block has its own set rebound damping amount. In step (d1), the processing unit adjusts the suspension control unit to control the predetermined riding behavior block with the set rebound damping amount.

Furthermore, the processing unit performs the following steps: if the judgment result of step (b1) is positive, the power assist control unit is maintained to output the current power assist power for control, the speed control unit is maintained to control with the current speed ratio, and the shock absorber control unit is maintained to control with the current compression damping amount and the current rebound damping amount; and the next monitoring is performed.

According to the second preferred embodiment of the present invention, the automatic control system for an electric power-assisted bicycle comprises a speed sensor, a power meter, a power-assisted control unit, a speed control unit and a processing unit. The speed sensor is used to sense the speed of the electric power-assisted bicycle. The power meter is used to sense the human power of the electric power-assisted bicycle. The processing unit is electrically connected to the speed sensor, the power meter, the power-assisted control unit and the speed control unit respectively. The processing unit stores 2N speed threshold values, 2M human power threshold values, (2N+2M+1) predetermined riding behavior blocks and 2N×2M transition period blocks, wherein N and M are natural numbers respectively. The (2N+2M+1) predetermined riding behavior blocks and the 2N×2M transition period blocks are in the two-dimensional quadrant defined by speed and human power, and are pre-planned according to the 2N speed thresholds and the 2M human power thresholds. In the two-dimensional quadrant, the 2N×2M transition period blocks are interspersed between the (2N+2M+1) predetermined riding behavior blocks, so that each predetermined riding behavior block is not adjacent to other predetermined riding behavior blocks. Each predetermined riding behavior block has its own set assist power and its own set gear ratio. The processing unit performs the following steps: (a2) reading the speed and human power during the monitoring period; (b2) determining whether the speed and human power are within one of the 2N×2M transition period blocks; (c2) if the determination result of step (b2) is negative, determining which of the (2N+2M+1) predetermined riding behavior blocks the speed and human power are within; and (d2) adjusting the power assist control unit to output the set power assist of the predetermined riding behavior block for control, and adjusting the speed change control unit to control with the set speed change ratio of the predetermined riding behavior block.

The automatic control method according to the third preferred embodiment of the present invention is for an electric power-assisted bicycle. The electric power-assisted bicycle includes a power-assisted control unit and a speed control unit. 2N speed threshold values, 2M human power threshold values, (2N+2M+1) predetermined riding behavior blocks and 2N×2M transition period blocks are provided in advance, wherein N and M are natural numbers respectively. The (2N+2M+1) predetermined riding behavior blocks and 2N×2M transition period blocks are within a two-dimensional quadrant defined by the speed of the electric power-assisted bicycle and the human power of the electric power-assisted bicycle, and are planned in advance according to the 2N speed threshold values and the 2M human power threshold values. In the two-dimensional quadrant, 2N×2M transition period blocks are interspersed between (2N+2M+1) predetermined riding behavior blocks, so that each predetermined riding behavior block is not adjacent to other predetermined riding behavior blocks. Each predetermined riding behavior block has its own set assist power and its own set gear ratio. The automatic control method according to the third preferred specific embodiment of the present invention first reads the speed and human power during the monitoring period. Then, the automatic control method according to the third preferred specific embodiment of the present invention determines whether the speed and human power are within one of the 2N×2M transition period blocks. If the judgment result is negative, the automatic control method according to the third preferred specific embodiment of the present invention determines which of the (2N+2M+1) predetermined riding behavior blocks the speed and human power are located in. Then, the automatic control method according to the third preferred specific embodiment of the present invention adjusts the power assist control unit to output the set power assist power of the predetermined riding behavior block for control, and adjusts the speed change control unit to control with the set speed change ratio of the predetermined riding behavior block.

Different from the prior art, the automatic control system and method for electric power-assisted bicycles according to the present invention can automatically adjust various control parameters in response to various riding behaviors and road conditions, and can judge the transition period between different riding behaviors and appropriately adjust the control parameters.

The advantages and spirit of the present invention can be further understood through the following detailed description of the invention and the attached drawings.

Please refer to FIG1 , the structure of the automatic control system 1 for an electric power-assisted bicycle according to the first preferred embodiment of the present invention is shown in FIG1 . The electric power-assisted bicycle is not shown in FIG1 .

As shown in FIG1 , the automatic control system 1 for an electric power-assisted bicycle according to the first preferred specific embodiment of the present invention includes a speed sensor 10, a cadence sensor 11, a torque sensor 12, a power-assisted control unit 13, a speed control unit 14, and a processing unit 15. The speed sensor 10, the cadence sensor 11, the torque sensor 12, the power-assisted control unit 13, and the speed control unit 14 can adopt commercially available components. The positions where the speed sensor 10, the cadence sensor 11, the torque sensor 12, the power-assisted control unit 13, and the speed control unit 14 are installed on the electric power-assisted bicycle are already known, and no further elaboration is given here.

The speed sensor 10 is used to sense the speed of the electric power-assisted bicycle. The cadence sensor 11 is used to sense the pedaling frequency of the electric power-assisted bicycle. The torque sensor 12 is used to sense the pedaling force of the electric power-assisted bicycle. The processing unit 15 is electrically connected to the speed sensor 10, the cadence sensor 11, the torque sensor 12, the power-assisted control unit 13 and the speed control unit 14 respectively.

The processing unit 15 calculates the human power according to the pedaling frequency and the pedaling force. The processing unit 15 is a fuzzy logic system. The processing unit 15 stores 2N speed threshold values, 2M human power threshold values, (2N+2M+1) predetermined riding behavior blocks and 2N×2M transition period blocks, where N and M are natural numbers. The (2N+2M+1) predetermined riding behavior blocks and the 2N×2M transition period blocks are in the two-dimensional quadrant defined by speed and human power, and are planned in advance according to the 2N speed threshold values and the 2M human power threshold values. Because both speed and human power are positive, the (2N+2M+1) predetermined riding behavior blocks and the 2N×2M transition period blocks are all in the first quadrant.

In particular, in the two-dimensional quadrant, 2N×2M transition period blocks are interspersed between (2N+2M+1) predetermined riding behavior blocks, so that each predetermined riding behavior block is not adjacent to other predetermined riding behavior blocks. Each predetermined riding behavior block has its own set assist power and its own set gear ratio.

Please refer to FIG. 2, which is an example of establishing and pre-storing 2N speed thresholds, 2M human power thresholds, (2N+2M+1) predetermined riding behavior blocks, and 2N×2M transition period blocks in the processing unit 15. The example shown in FIG. 2 is an example where N and M are both equal to 1. In FIG. 2, S1 and S2 represent two speed thresholds, and P1 and P2 represent two human power thresholds. The five predetermined riding behavior blocks are pre-planned according to S1, S2, P1, and P2, and are respectively: starting, climbing, maintaining, sliding, and sprinting. The 4 transition period blocks are interspersed between the 5 predetermined riding behavior blocks, so that each predetermined riding behavior block is not adjacent to other predetermined riding behavior blocks. It should be noted that more predetermined riding behavior blocks and transition period blocks can allow the automatic control system 1 for an electric power-assisted bicycle according to the first preferred specific embodiment of the present invention to adjust the control parameters more finely.

The speed thresholds S1 and S2 can be pre-set according to the different models of vehicles to be deployed. Riders can also modify them by themselves, but S2 must be greater than S1. The speed thresholds S1 and S2 are pre-set according to the different models of vehicles to be deployed. Please refer to Table 1 for an example.

Table 1 Speed Threshold (km/h) Vehicle Type S1 S2 Trail Car 10 20 City car 13 twenty three Mountain Bike 15 25 Road bike 20 30

The two human-power thresholds P1 and P2 can be pre-set according to the rider's physical condition. Similarly, the rider can also modify it, but P2 must be greater than P1. Please refer to Table 2 for an example of the two human-power thresholds P1 and P2 pre-set according to the rider's physical condition.

Table 2 Human power threshold (Watt) Physical condition P1 P2 Difference 20 40 ordinary 50 150 good 150 250 very good 350 450

From the settings in the examples shown in Table 1 and Table 2, it can be seen that the automatic control system 1 for electric power-assisted bicycles according to the first preferred embodiment of the present invention can be applied to electric power-assisted bicycles of various models and can also respond to riders of different physical conditions. It should be emphasized that in actual application, the rider can also modify the two speed thresholds S1 and S2 and the two human power thresholds P1 and P2 to better suit his riding conditions.

The processing unit 15 performs the following steps: (a1) reading the speed and human power during the monitoring period; (b1) determining whether the speed and human power are within one of the 2N×2M transition period blocks; (c1) if the determination result of step (b1) is negative, determining which of the (2N+2M+1) predetermined riding behavior blocks the speed and human power are within; and (d1) adjusting the power assist control unit 13 to output the set power assist of the predetermined riding behavior block for control, and adjusting the speed change control unit 14 to control with the set speed ratio of the predetermined riding behavior block.

Furthermore, as shown in FIG. 1 , the automatic control system 1 according to the first preferred embodiment of the present invention further includes a shock absorber control unit 16. The shock absorber control unit 16 is electrically connected to the processing unit 15. Each predetermined riding behavior block has its own set compression damping amount. In step (d1), the processing unit 15 adjusts the shock absorber control unit 16 to control the set compression damping amount of the predetermined riding behavior block.

Furthermore, each predetermined riding behavior block has its own set rebound damping amount. In step (d1), the processing unit 15 adjusts the shock absorber control unit 16 to control the set rebound damping amount of the predetermined riding behavior block.

Furthermore, the processing unit 15 performs the following steps: if the judgment result of step (b1) is positive, that is, the processing unit 15 judges that the speed and human power are in one of the 2N×2M transition period blocks, the processing unit 15 maintains the power assist control unit 13 outputting the current power assist for control, maintains the gear shift control unit 14 controlling with the current gear ratio, and maintains the suspension control unit 16 controlling with the current compression damping amount and the current rebound damping amount; and performs the next monitoring. For example, the processing unit 15 judges that the speed and human power are in the transition period block lower than S1 and between P1 and P2, and the previous monitoring judges that the speed and human power are in the starting riding behavior block. Therefore, the current assist power output by the assist control unit 13 is the set assist power of the starting riding behavior block, the current speed ratio controlled by the shift control unit 14 is the set speed ratio of the starting riding behavior block, and the current compression damping amount and the current rebound damping amount controlled by the shock absorber control unit 16 are the set compression damping amount and the set rebound damping amount of the starting riding behavior block.

Please refer to FIG3 , the structure of the automatic control system 2 for an electric power-assisted bicycle according to the second preferred embodiment of the present invention is shown in FIG2 . The electric power-assisted bicycle is not shown in FIG3 .

As shown in FIG3 , the automatic control system 2 according to the second preferred embodiment of the present invention includes a speed sensor 20, a power meter 21, a power assist control unit 22, a speed control unit 23, and a processing unit 24. The speed sensor 20, the power meter 21, the power assist control unit 22, and the speed control unit 23 can use commercially available components. The positions where the speed sensor 20, the power meter 21, the power assist control unit 22, and the speed control unit 23 are installed on the electric power-assisted bicycle are already known, and no further description is given here.

The speed sensor 20 is used to sense the speed of the electric power-assisted bicycle. The power meter 21 is used to sense the human power of the electric power-assisted bicycle. The processing unit 24 is electrically connected to the speed sensor 20, the power meter 21, the power-assisted control unit 22 and the speed control unit 23 respectively.

The processing unit 24 stores 2N speed threshold values, 2M human power threshold values, (2N 2M 1) pre-determined riding behavior blocks and 2N×2M transition period blocks, where N and M are natural numbers. (2N+2M+1) pre-determined riding behavior blocks and 2N×2M transition period blocks are in the two-dimensional quadrant defined by speed and human power, and are pre-planned based on 2N speed thresholds and 2M human power thresholds. Because speed and human power are both positive values, (2N+2M+1) pre-determined riding behavior blocks and 2N×2M transition period blocks are all in the first quadrant.

In particular, in the two-dimensional quadrant, 2N×2M transition period blocks are interspersed between (2N+2M+1) predetermined riding behavior blocks, so that each predetermined riding behavior block is not adjacent to other predetermined riding behavior blocks. Each predetermined riding behavior block has its own set assist power and its own set gear ratio.

The processing unit 24 performs the following steps: (a2) reading the speed and human power during the monitoring period; (b2) determining whether the speed and human power are within one of the 2N×2M transition period blocks; (c2) if the determination result of step (b2) is negative, determining which of the (2N+2M+1) predetermined riding behavior blocks the speed and human power are within; and (d2) adjusting the power assist control unit 22 to output the set power assist of the predetermined riding behavior block for control, and adjusting the speed change control unit 23 to control with the set speed change ratio of the predetermined riding behavior block.

Furthermore, as shown in FIG. 3 , the automatic control system 2 according to the second preferred embodiment of the present invention further includes a shock absorber control unit 25, which is electrically connected to the processing unit 24. Each predetermined riding behavior block has its own set compression damping amount. In step (d2), the processing unit 24 adjusts the shock absorber control unit 25 to control the set compression damping amount of the predetermined riding behavior block.

Furthermore, each predetermined riding behavior block has its own set rebound damping amount. In step (d2), the processing unit 24 adjusts the shock absorber control unit 25 to control the set rebound damping amount of the predetermined riding behavior block.

Furthermore, the processing unit 24 performs the following steps: if the judgment result of step (b2) is positive, the power assist control unit 22 is maintained to output the current power assist power for control, the speed change control unit 23 is maintained to control with the current speed ratio, and the shock absorber control unit 25 is maintained to control with the current compression damping amount and the current rebound damping amount; and the next monitoring is performed.

Please refer to Table 3, which is a list of examples of setting the power assist, setting the gear ratio, and setting the compression damping amount in response to various riding behaviors. Because setting the control parameters also involves different vehicle models, the actual values are replaced by levels in Table 3.

Please refer to FIG. 4, which is a flow chart of the automatic control method 3 according to the third preferred embodiment of the present invention. The automatic control method 3 according to the third preferred embodiment of the present invention is for an electric power-assisted bicycle. The implementation framework of the automatic control method 3 according to the third preferred embodiment of the present invention is that the electric power-assisted bicycle includes a power-assisted control unit and a speed control unit. 2N speed threshold values, 2M human power threshold values, (2N+2M+1) predetermined riding behavior blocks, and 2N×2M transition period blocks are provided in advance, where N and M are natural numbers respectively. The (2N+2M+1) predetermined riding behavior blocks and the 2N×2M transition period blocks are in a two-dimensional quadrant defined by the speed of the electric power-assisted bicycle and the human power of the electric power-assisted bicycle, and are pre-planned according to the 2N speed thresholds and the 2M human power thresholds. In the two-dimensional quadrant, the 2N×2M transition period blocks are interspersed between the (2N+2M+1) predetermined riding behavior blocks, so that each predetermined riding behavior block is not adjacent to other predetermined riding behavior blocks. Each predetermined riding behavior block has its own set assist power and its own set gear ratio.

As shown in FIG. 4 , first, the automatic control method 3 according to the third preferred embodiment of the present invention executes step S30 to read the speed and human power during the monitoring period.

Next, the automatic control method 3 according to the third preferred embodiment of the present invention executes step S32 to determine whether the speed and human power are within one of the 2N×2M transition period blocks.

If the judgment result of step S32 is negative, the automatic control method 3 according to the third preferred embodiment of the present invention executes step S34 to judge which of the (2N+2M+1) predetermined riding behavior blocks the speed and human power are in.

After step S34, the automatic control method 3 according to the third preferred embodiment of the present invention executes step S36 to adjust the power assist control unit to output the set power assist power of the predetermined riding behavior block for control, and adjust the speed change control unit to control the set speed change ratio of the predetermined riding behavior block.

The electric power-assisted bicycle includes a suspension control unit. Each predetermined riding behavior block has its own set compression damping amount and its own set rebound damping amount. In step S36, the processing unit adjusts the suspension control unit to control the set compression damping amount and the set rebound damping amount of the predetermined riding behavior block. After step S36, the automatic control method 3 according to the third preferred specific embodiment of the present invention re-executes step S30 to perform the next monitoring.

If the judgment result of step S32 is positive, the automatic control method 3 according to the third preferred embodiment of the present invention executes step S38, maintains the power assist control unit outputting the current power assist power for control, maintains the speed control unit controlling with the current speed ratio, and maintains the shock absorber control unit controlling with the current compression damping amount and the current rebound damping amount. After step S38, the automatic control method 3 according to the third preferred embodiment of the present invention re-executes step S30 for the next monitoring.

Through the above detailed description of the present invention, it can be clearly understood that the automatic control system and method for an electric power-assisted bicycle according to the present invention can automatically adjust various control parameters in response to various riding behaviors and road conditions, and can determine the transition period between different riding behaviors and appropriately adjust the control parameters.

The above detailed description of the preferred specific embodiments is intended to more clearly describe the features and spirit of the present invention, but is not intended to limit the scope of the present invention to the preferred specific embodiments disclosed above. On the contrary, the purpose is to cover various changes and arrangements with equivalents within the scope of the patent application for the present invention. Therefore, the scope of the patent application for the present invention should be interpreted in the broadest sense based on the above description, so as to cover all possible changes and arrangements with equivalents.

1: Automatic control system 10: Speed sensor 11: Cadence sensor 12: Torque sensor 13: Power assist control unit 14: Speed control unit 15: Processing unit 16: Shock absorber control unit 2: Automatic control system 20: Speed sensor 21: Power meter 22: Power assist control unit 23: Speed control unit 24: Processing unit 25: Shock absorber control unit 3: Automatic control method S30~S38: Process steps

FIG. 1 is a schematic diagram of the structure of an automatic control system for an electric power-assisted bicycle according to the first preferred embodiment of the present invention. FIG. 2 is a schematic diagram of the structure of an automatic control system for an electric power-assisted bicycle according to the first preferred embodiment of the present invention, wherein 2N speed threshold values, 2M human power threshold values, (2N 2M 1) An example of a predetermined riding behavior block and 2N×2M transition period blocks. FIG3 is a schematic diagram of the architecture of an automatic control system for an electric power-assisted bicycle according to a second preferred embodiment of the present invention. FIG4 is a flow chart of an automatic control method according to a third preferred embodiment of the present invention.

1: Automatic control system

10: Speed sensor

11: Cadence sensor

12: Torque sensor

13: Power assist control unit

14: Speed control unit

15: Processing unit

16:Shock control unit

Claims (11)

An automatic control system for an electric power-assisted bicycle comprises: a speed sensor for sensing a speed of the electric power-assisted bicycle; a cadence sensor for sensing a pedaling frequency of the electric power-assisted bicycle; a torque sensor for sensing a pedaling force of the electric power-assisted bicycle; a power-assistance control unit; a speed control unit; and a processing unit, which is electrically connected to the speed sensor, the cadence sensor, the torque sensor, the power-assistance control unit and the speed control unit, respectively, and the processing unit calculates a human power according to the pedaling frequency and the pedaling force, and the processing unit stores 2N speed threshold values, 2M human power threshold values, (2N 2M 1) predetermined riding behavior blocks and 2N×2M transition period blocks, where N and M are natural numbers respectively. 2M 1) predetermined riding behavior blocks and the 2N×2M transition period blocks are in a two-dimensional quadrant defined by the speed and the human power and are pre-planned according to the 2N speed thresholds and the 2M human power thresholds. In the two-dimensional quadrant, the 2N×2M transition period blocks are interspersed between the (2N 2M 1) between predetermined riding behavior blocks, so that each predetermined riding behavior block is not adjacent to other predetermined riding behavior blocks, each predetermined riding behavior block has a respective set assist power and a respective set gear ratio, the processing unit performs the following steps: (a) reading the speed and the human power in a monitoring period; (b) determining whether the speed and the human power are within the 2N×2M transition period blocks; (c) if the judgment result of step (b) is negative, then determine in which of the (2N+2M+1) predetermined riding behavior blocks the speed and the human power are located; and (d) adjust the power assist control unit to output the set power assist power of the predetermined riding behavior block for control, and adjust the speed change control unit to control with the set speed ratio of the predetermined riding behavior block. The automatic control system as described in claim 1, wherein each predetermined riding behavior block has a respective set compression damping amount, and the automatic control system further comprises: a shock absorber control unit, which is electrically connected to the processing unit, wherein in step (d), the processing unit adjusts the shock absorber control unit to control the set compression damping amount of the predetermined riding behavior block. An automatic control system as described in claim 2, wherein each predetermined riding behavior block has a respective set rebound damping amount, wherein in step (d), the processing unit adjusts the suspension control unit to control the predetermined riding behavior block with the set rebound damping amount. The automatic control system as described in claim 3, wherein the processing unit also performs the following steps: If the judgment result of step (b) is affirmative, the power assist control unit is maintained to output a current power assist power for control, the speed control unit is maintained to control with a current speed ratio, and the shock absorber control unit is maintained to control with a current compression damping amount and a current rebound damping amount; and a next monitoring is performed. An automatic control system for an electric power-assisted bicycle comprises: a speed sensor for sensing a speed of the electric power-assisted bicycle; a power meter for sensing a human power of the electric power-assisted bicycle; a power-assistance control unit; a speed-changing control unit; and a processing unit, which is electrically connected to the speed sensor, the power meter, the power-assistance control unit, and the speed-changing control unit, respectively, and the processing unit stores 2N speed threshold values, 2M human power values, and a plurality of other parameters. The speed threshold, (2N+2M+1) predetermined riding behavior blocks and 2N×2M transition period blocks are respectively a natural number, the (2N+2M+1) predetermined riding behavior blocks and the 2N×2M transition period blocks are in a two-dimensional quadrant defined by the speed and the human power and are pre-planned according to the 2N speed threshold and the 2M human power threshold. In the two-dimensional quadrant, the 2N×2M transition period blocks It is interspersed between the (2N+2M+1) predetermined riding behavior blocks, so that each predetermined riding behavior block is not adjacent to other predetermined riding behavior blocks, and each predetermined riding behavior block has a respective set assist power and a respective set gear ratio. The processing unit performs the following steps: (a) reading the speed and the human power during a monitoring period; (b) determining whether the speed and the human power are within the 2N×2M (c) if the judgment result of step (b) is negative, then determine which of the (2N+2M+1) predetermined riding behavior blocks the speed and the human power are in; and (d) adjust the power assist control unit to output the set power assist of the predetermined riding behavior block for control, and adjust the speed change control unit to control with the set speed ratio of the predetermined riding behavior block. The automatic control system as described in claim 5, wherein each predetermined riding behavior block has a respective set compression damping amount, and the automatic control system further comprises: a shock absorber control unit, which is electrically connected to the processing unit, wherein in step (d), the processing unit adjusts the shock absorber control unit to control the set compression damping amount of the predetermined riding behavior block. An automatic control system as described in claim 6, wherein each predetermined riding behavior block has a respective set rebound damping amount, wherein in step (d), the processing unit adjusts the suspension control unit to control the predetermined riding behavior block with the set rebound damping amount. The automatic control system as described in claim 7, wherein the processing unit also performs the following steps: if the judgment result of step (b) is affirmative, the power assist control unit is maintained to output a current power assist power for control, the speed change control unit is maintained to control with a current speed change ratio, and the shock absorber control unit is maintained to control with a current compression damping amount and a current rebound damping amount; and a secondary monitoring is performed. An automatic control method for an electric power-assisted bicycle, the electric power-assisted bicycle comprising a power-assisted control unit and a speed control unit, 2N speed threshold values, 2M human power threshold values, (2N+2M+1) predetermined riding behavior blocks and 2N×2M transition period blocks are provided in advance, N and M are natural numbers respectively, the (2N+2M+1) predetermined riding behavior blocks and The 2N×2M transition period blocks are in a two-dimensional quadrant defined by a speed of the electric power-assisted bicycle and a human power of the electric power-assisted bicycle and are pre-planned according to the 2N speed thresholds and the 2M human power thresholds. In the two-dimensional quadrant, the 2N×2M transition period blocks are interspersed between the (2N+2M+1) predetermined riding behavior blocks, so that each predetermined riding behavior block The behavior block is not adjacent to other predetermined riding behavior blocks, each predetermined riding behavior block has a respective set assist power and a respective set gear ratio, and the automatic control method comprises the following steps: (a) reading the speed and the human power during a monitoring period; (b) determining whether the speed and the human power are within one of the 2N×2M transition period blocks; (c) if step ( b) If the result of the judgment is negative, it is judged that the speed and the human power are in which of the (2N+2M+1) predetermined riding behavior blocks; and (d) the power assist control unit is adjusted to output the set power assist of the predetermined riding behavior block for control, and the speed change control unit is adjusted to control with the set speed ratio of the predetermined riding behavior block. The automatic control method as described in claim 9, wherein the electric power-assisted bicycle includes a suspension control unit, each predetermined riding behavior block has a respective set compression damping amount and a respective set rebound damping amount, and in step (d), the suspension control unit is adjusted to control the set compression damping amount and the set rebound damping amount of the predetermined riding behavior block. The automatic control method as described in claim 10 further comprises the following steps: if the judgment result of step (b) is affirmative, the power assist control unit is maintained to output a current power assist power for control, the speed change control unit is maintained to control with a current speed change ratio, and the shock absorber control unit is maintained to control with a current compression damping amount and a current rebound damping amount; and a secondary monitoring is performed.

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