Python native System modeling

Build, simulate, and analyze continuous-time, discrete-time, and hybrid systems using intuitive block diagrams. From simple ODEs to complex multi-domain simulations.

Intro Docs Editor GitHub Consulting

Example

Installation

Ecosystem

pathview

Visual block diagram editor for building and simulating PathSim models in the browser.

codegen

Generates standalone C code from PathSim simulations for embedded deployment.

pathsim

Build and simulate continuous-time, discrete-time, and hybrid dynamical systems using block diagrams.

chem

Thermodynamic property correlations, activity coefficients, equations of state, and tritium processing.

vehicle

Tire models, suspension systems, and powertrain components for vehicle dynamics simulation.

flight

Six degrees of freedom equations of motion, aerodynamics, and propulsion for flight simulation.

S-parameter networks, transmission lines, amplifiers, and mixers for RF and microwave simulation.

Features

Hot-Swappable

Switch blocks and solvers during active simulation at runtime.

MIMO Capable

Multiple input, multiple output ports built into all blocks.

18+ Solvers

Implicit, explicit, and adaptive integrators for stiff and non-stiff systems.

Hierarchical

Nested subsystems for modular, reusable component design.

Event Handling

Zero-crossing detection and scheduled events for hybrid systems.

Extensible

Create custom blocks by subclassing the base Block class.

Browser Editor

Design and simulate visually with PathView using Pyodide.

Domain Toolboxes

Specialized blocks for chemical, vehicle, flight, and RF engineering.