一种转向助力电机的多模式控制方法

By employing a multi-mode control method, combined with zero-delay sliding diaphragm control and self-disturbing field weakening control, the power steering motor achieves rapid and accurate response under different operating conditions, thus solving the problem of insufficient motor control speed.

CN115987167BActive Publication Date: 2026-07-17JILIN UNIVERSITY +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JILIN UNIVERSITY
Filing Date
2022-09-09
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing power steering systems, while ensuring stability, the motor control lacks responsiveness, making it difficult to achieve a fast and accurate response.

Method used

A multi-mode control method is adopted, including switching between current loop and speed loop. The current loop uses deadbeat sliding diaphragm control, and the speed loop uses active disturbance rejection field weakening control. Combined with the sliding diaphragm observer and the active disturbance rejection controller, the motor can achieve fast and accurate response.

Benefits of technology

Through a multi-mode control method, the motor achieves efficient control of the current loop and speed loop in normal and emergency steering modes, respectively, which improves the motor's response speed and accuracy, and is superior to traditional PID control.

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Abstract

本发明属于电机控制技术领域,涉及一种转向助力电机的多模式控制方法。通过数据采集模块采集车辆运行中的各种传感器信号;通过对采集的传感器信号的实时处理与分析,判断出当前车辆所处的工作状态,设置方向盘转矩信号与角速度信号阈值作为电机工作模式的判断标准,选择电机的工作模式,超过阈值则电机处于紧急转向模式,其他情况均属于正常工作模式;当电机处于正常工作模式下,根据上层控制要求的目标电流,通过当前设计的无差拍滑膜控制方式输出目标电流,实现电机电流环的控制;当电机处于紧急转向模式下,根据上层控制要求的目标转速,通过自抗扰弱磁控制方式,输出目标转速,实现电机转速环的控制,实现转向助力电机的多模式快速准确响应。
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