A Two-Degree-of-Freedom Controller Design Satisfying Separation Principle With Fractional-Order PD and Generalized ESO

被引:50
作者
Chen, Pengchong [1 ]
Luo, Ying [1 ]
机构
[1] Huazhong Univ Sci & Technol, Sch Mech Sci & Engn, Wuhan 430074, Peoples R China
基金
中国国家自然科学基金;
关键词
Observers; Servomotors; Tuning; Robustness; PD control; Velocity control; Regulation; Active disturbance rejection control (ADRC); fractional-order proportional derivative (FOPD) controller; general extended state observer (GESO); permanent magnet synchronous motor (PMSM); robustness; separation principle; DISTURBANCE REJECTION CONTROL; PID CONTROLLERS; SPEED CONTROL; SYSTEM; ROBUSTNESS/PERFORMANCE;
D O I
10.1109/TMECH.2021.3059160
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
This article proposes a two-degree-of-freedom fractional-order proportional derivative (FOPD) controller with a general extended state observer (GESO) to achieve both optimal set-speed tracking and disturbance rejection performance for a typical permanent magnet synchronous motor servo system. The GESO simplifies the control plant, estimates and actively rejects total disturbances. The FOPD controller achieves fast speed tracking with almost no overshoot. Furthermore, it is verified that the control system with the proposed FOPD-GESO controller design meets the separation principle through mathematical derivation and simulation illustration. It shows that the proposed controller breaks the inherent tradeoff on tracking performance and disturbance robustness of the typical traditional proportional-integral-derivative (PID) control. Meanwhile, a systematic scheme for designing the FOPD-GESO controller to satisfy both frequency-domain and time-domain specifications is proposed in this article. Simulation illustration and experimental validation are performed to demonstrate that the proposed FOPD-GESO controller is superior to the typical integer-order PID controller, integer-order active disturbance rejection control with a typical extended state observer, and fractional-order PID controller in terms of speed tracking, antiload disturbance, and robustness to internal uncertainties.
引用
收藏
页码:137 / 148
页数:12
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