Brushless direct current motor control method based on improved pid controller

Abstract

Provided is a brushless direct current (BLDC) motor control method based on an improved proportional integral derivative (PID) controller, relating to the field of motor control. The method of this application comprises: establishing a squared proportional integral derivative (SPID) controller integrating a squared error term; determining a sign of a gain coefficient of the squared error term in the SPID controller based on an error between an actual speed and a target speed of a BLDC motor; determining whether to enable a derivative term of the SPID controller based on whether the actual speed has reached the target speed; using the error between the actual speed and the target speed as an input amount to the SPID controller, and outputting a current control amount; and performing speed control on the BLDC motor based on the current control amount until the error meets an accuracy requirement.

Dependencies are inferred from the claim text.