中图分类号：TP273
文献标志码：A
DOI: 10.16157/j.issn.0258-7998.223566
中文引用格式： 谢观灵，邵李焕，郑长风. 基于改进模糊PID位置随动系统控制[J]. 电子技术应用，2023，49(6)：49-53.
英文引用格式： Xie Guanling，Shao Lihuan，Zheng Changfeng. Control of position servo system based on improved fuzzy PID[J]. Application of Electronic Technique，2023，49(6)：49-53.

Control of position servo system based on improved fuzzy PID

Abstract： To address the problem of system following performance degradation due to load torque variation and the problem of unknown load torque that occurs in DC brushed motors when using conventional fuzzy PID controllers for position following control， a load observer-based improved fuzzy PID controller is proposed to replace the traditional fuzzy PID controller. A load observer is added to the traditional fuzzy control structure in order to observe the system load torque in real time and adjust the parameters of the system controller in real time using the load torque, which improves the position following capability of the system when the load torque changes abruptly. The simulation results show that the load observer can observe the load torque in real time and accurately, and the improved fuzzy PID controller has a strong ability to suppress the load disturbance and can effectively reduce the regulation time and steady-state error of the system.

Key words : DC brush motor；position following system；fuzzy PID；load observer