Hi John,
I understand that you are trying to implement the Sensorless FOC of BLDC motor, and when you run the host model, the motor doesnot spin and the displays and plot show zero.
This seems there may be issues with the UART communication between the host model and the hardware and thus preventing the motor from responding.
You can follow the below steps:
- Ensure that the COM port you select in the host model matches the one shown in your device manager. If XDS110 is listed as COM8 or COM9, try both ports systematically.
- While testing with baud rates of 5.625e6 and 5e6, ensure that both the model and the host communication settings match exactly. Typically, UART communication for serial data is set to 115200 baud.
- Double-check the pin assignments for TX and RX in the SCI_A settings (GPIO29 for Tx and GPIO28 for Rx). Make sure the LaunchPad’s TX and RX lines are properly wired to the respective pins on the motor driver.
- Since the motor you are using is a T-Motor F90 FPV Racing Drone Motor, it may require tuning of the PI controllers for speed and current loops in the example model. The default parameters for PMSM may not work well for a high-speed, low-inductance motor like the F90.
- Use MATLAB’s “fopen” and “fscanf” commands to open the serial port and read incoming data. If you can’t see any data coming from the target, it’s a sign that SCI communication isn’t properly configured.
You can refer the below links for more info on “fopen” and “fscanf”
- Check the “HWI_SCIA_RX_INT” block settings and verify that the interrupt is properly mapped and triggering in the model.
- If you want to use InstaSPIN, you will likely need to use CCS and TI’s MotorWare software rather than Simulink.
You can refer the below links for more info on Sensorless control of BLDC motor and FOC of BLDC motor:
