Sliding-Mode Control System Design for an Experimental Model With Resonance-Free SWATH

2015 ◽  
Author(s):  
Hiroyuki Kajiwara ◽  
Masamitsu Kanda ◽  
Motoki Yoshida
Keyword(s):  
Control System ◽  
Sliding Mode Control ◽  
Experimental Model ◽  
Disturbance Rejection ◽  
Sliding Mode ◽  
Control System Design ◽  
Regular Wave ◽  
Control Loop ◽  
Pitch Control ◽  
Mode Control

Given an experimental model with a resonance-free SWATH, the paper represents successful experimental results of sliding-mode control applied to the pitch control loop, which indicate its effectiveness in regular-wave disturbance rejection compared with the case of using PD control only.

Simulation of Control System for Permanent Magnet Synchronous Machine

2011 ◽  
Vol 66-68 ◽  
pp. 1422-1427
Author(s):  
Ting You ◽  
Pei Jiang Li
Keyword(s):  
Control System ◽  
Sliding Mode Control ◽  
Permanent Magnet ◽  
Disturbance Rejection ◽  
Sliding Mode ◽  
Synchronous Machine ◽  
Permanent Magnet Synchronous Machine ◽  
Mode Control ◽  
Active Disturbance Rejection ◽  
Disturbance Rejection Control

For optimal control of synchronous machine, chattering phenomenon will appear if traditional slider control is adopted because permanent magnet synchronous machine is a complex nonlinear time-dependent system with strong coupling of current and rotational speed to cause the deterioration of system control performance with load or load disturbance. In this article, based on the mathematical model of permanent magnet synchronous machine, a control system for it, which combines sliding mode control and active disturbance rejection control, is proposed to improve the dynamic performance and robustness of control system. In the control system, sliding mode control is adopted to control the inner current of machine and active disturbance rejection control is adopted to control the outer speed. The load disturbance of system is also estimated and offset. The results of matlab simulation show that the control system can eliminate serious chattering phenomenon existing in sliding mode control, improves the robustness of system for load and system parameter disturbance as well as has great dynamic and static performance.

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