Wolfram Language

HIL Simulation of a Quarter-Car Suspension Model

Hardware-in-the-Loop (HIL) simulation is a useful development tool when testing the actual physical system is risky, expensive or not an option. In HIL simulation, a model of the physical system is simulated in real time.

show complete Wolfram Language input

In this example, the model of a quarter-car suspension system is discretized and deployed to an Adafruit Metro Mini. A joystick connected to pin A3 of the board will be used to specify the reference road input to the HIL simulation running on the board. Finally, the real-time response of the system will be visualized using data obtained through the device framework.

The free-body diagram of the system.

The parameters.

The model with the as input and , and as outputs.

Discretize the model.

The joystick reads a value from 0V to 4.85V, with the default reading of 2.44V. Rescale the values to get the reference input of unit to 1 unit.

The model of the joystick.

The complete system with the joystick as input and , and as outputs.

The microcontroller specification with the input coming from analog pin A3 and the outputs transmitted over serial.

Deploy the model.

Open a serial connection to the HIL simulation.

Submit a task to read and parse the data.

show complete Wolfram Language input

The results of the HIL simulation.

Remove the task and close the device.

Related Examples

de es fr ja pt-br zh