用于永磁同步电机的滑模观测器
By employing the stator current equation and speed-approaching law in the α-β stationary coordinate system in the permanent magnet synchronous motor, and adjusting the sign function gain coefficient, the problems of large computational load and low accuracy of the sliding mode observer are solved, achieving higher observation accuracy and a simpler structure, and improving the motor control performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HEFEI GEYI INTEGRATED CIRCUIT CO LTD
- Filing Date
- 2024-03-07
- Publication Date
- 2026-07-17
AI Technical Summary
Existing sliding mode observers have a large computational load and their observation accuracy needs to be improved, especially in the acquisition of rotor position and speed information in permanent magnet synchronous motors.
The stator current equations in the α-β stationary coordinate system are used to calculate the estimated values of the stator current in the α-axis and β-axis. The gain coefficient before the sign function sgn(·) is adjusted by using the speed-approaching law and the switching point mechanism to reduce the amount of computation and improve the observation accuracy.
It reduces the computational load of the sliding mode observer, improves the observation accuracy of rotor position and speed, reduces system chattering, simplifies the structure, and enhances the control performance of the motor.
Smart Images
Figure CN120658149B_ABST