added ability to 'prewarp' the conversion of continuous to discrete-time systems#417
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murrayrm merged 2 commits intoJul 11, 2020
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…ime systems (in functions sample, sample_system, and c2d) , so that their gain and phase match at a specific desired frequency.
murrayrm
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Jun 11, 2020
murrayrm
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Jun 11, 2020
…oximation, fixed failing tests
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Remark: this is used in discrete control design when your controller is first designed in continuous time and then Discretized. discretization typically changes the mag and phase; ‘prewarping’ allows you to keep the same mag and phase of your cont-time controller in discrete time at one specific frequency. Usually that is the gain=1 crossover frequency. |
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(in functions sample, sample_system, and c2d) , so that their gain and phase match at a specific desired frequency.