Picture docking control method based on brushless motor rotor position sensor

Abstract

The application relates to the technical field of motor control, in particular to a picture parking control method based on a brushless motor rotor position sensor. The method comprises the following steps: acquiring a commutation pulse signal, extracting a time interval parameter to generate a rotor mechanical angle, and constructing a displacement mapping relationship; receiving a picture display instruction, extracting a picture identifier, calling a historical weight table to extract a proportional differential parameter, and calculating an inertia feedforward compensation amount; combining the displacement mapping relationship and the inertia feedforward compensation amount to calculate a braking advance angle; collecting a direct-current power supply voltage to generate a fluctuation compensation coefficient, correcting the braking advance angle according to the fluctuation compensation coefficient, and generating a target braking instruction; collecting a position error and updating the position error to a data node of the historical weight table to execute a physical parking action. The application gradually evolves a stable strategy according to actual accumulated errors, releases multi-source interference from the overall dimension, and prevents a display picture from gradually deviating from a standard visual window in long-term cyclic operation of equipment.