If a motor is moving too slowly, what action does the PID speed control algorithm take?

The PID speed control algorithm is designed to maintain a desired speed and correct any deviations from that setpoint. When a motor is moving too slowly, the algorithm calculates the difference between the desired speed and the actual speed, known as the error. It then uses this error to determine the appropriate adjustment value to bring the speed back to the desired level.

Thus, when the motor is underperforming, the PID controller responds by applying an adjustment value that increases the power sent to the motor. This adjustment is based on the proportional, integral, and derivative components of the PID algorithm, allowing for a calculated and smooth increase in power output that helps accelerate the motor to the target speed. This ensures that the motor can perform effectively, maintaining efficiency and stability in its operation.

In summary, the action taken to address slow movement is to apply an adjustment value that will increase the speed of the motor, effectively compensating for the underperformance.