Title :
The Characteristics of Mixed-Controller for Magnetic Bearing Based on H∞ and PID
Author :
Guangzhong Cao ; Xin Men
Author_Institution :
Sch. of Eng. & Technol., Shenzhen Univ.
Abstract :
A H-infinity controller and a PID controller for an active magnetic bearing (AMB) system were designed, then they were mixed by a position error function. Starting responses of the perturbation were investigated by simulation model. Selection of the threshold influences the dynamic performance. The relationship between control current and displacement of the rotor was presented. The results show that the developed mixed-controller is able to ensure the system with good dynamic characteristics, strong robustness, and satisfying disturbance suppression effect
Keywords :
Hinfin control; control system synthesis; magnetic bearings; perturbation techniques; three-term control; Hinfin controller; PID controller; active magnetic bearing; position error function; Bismuth; Control systems; Design engineering; Displacement control; Error correction; Field programmable gate arrays; H infinity control; Magnetic levitation; Robustness; Three-term control; H-infinity controller; PID controller; dynamic characteristics; magnetic bearing; mixed-controller;
Conference_Titel :
Intelligent Control and Automation, 2006. WCICA 2006. The Sixth World Congress on
Conference_Location :
Dalian
Print_ISBN :
1-4244-0332-4
DOI :
10.1109/WCICA.2006.1712791
