i try to build more extensive physical backend with simulink. i am using the AP_reciever to get the pwm for the motors.
Generally the pwm is produce in a feedback loop that control the motor speed,hence this feedback loop need to measure the motor speed to reduce the error.
but there is no such a sensor usually in autopilot.
my assumption is the pwm from the AP_reciever is just for transfer data (the desire speed of the motor) and there is another pwm generator for control the motor speed in a feedback loop, is it true?