MPC block in simulink is gives max frequency to stepper motor after setpoint is reached

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Anshul 2024-2-29

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回答： Pratyush 2024-7-8，8:55

Hi

My MPC block in simulink is giving maximum frequncy which PWM module of PLC can provide, after encoder count which is my setpoint is set to 60000 is reached. I am not able to understand what parameters should i look at to resolve the issue.

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Answer 1

Pratyush 2024-7-8，8:55

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Hi Anshul,

To resolve the issue with your MPC block in Simulink, consider the following key parameters and steps:

Sampling Time: Ensure it's appropriate for your system's dynamics.
Setpoint Configuration: Verify the setpoint (60000 encoder counts) is correctly set.
Control & Prediction Horizons: Adjust these to improve performance.
Constraints: Check constraints on control inputs and outputs.
Model Accuracy: Validate the accuracy of the plant model.
Tuning Parameters: Review and tune weights on control inputs and outputs.
PWM Module Configuration: Ensure it can handle the frequency and duty cycle.
Encoder Feedback: Confirm the accuracy and scaling of the encoder feedback.
Simulation Settings: Verify simulation time and solver settings.
Debugging & Logging: Use these tools to monitor signals and system response.