Title :
Stability analysis and robust control design on an AMB system
Author :
Arredondo, I. ; Jugo, J.
Author_Institution :
F. Ciencia y Tecnologia, Bilbao
Abstract :
This paper describes a stability analysis and a Hinfin robust control design for an electromechanical system consisting of a rotary flexible spindle hovered by active magnetic bearings (AMB), whose potential uses in the machine-tool industry have been well documented. Firstly, a complete experimental stability analysis is performed controlled by a previously designed PID controller. This is performed via the ISO 14839-3 standard, which reliability needs to probe the negligibility of some effects. Then, since the lack of robustness is concluded by the previous study, an Hinfin control design is accomplished. Moreover, the ill-conditioning of the matrices when the DGKF algorithms are solved, is avoided performing a model reduction. This is carried out by means of the symmetry properties which characterize the system and hence, facilitating the design. The better behavior of the system is probed by simulation in a complete model of the real device.
Keywords :
Hinfin control; control system synthesis; flexible structures; magnetic bearings; robust control; three-term control; AMB system; Hinfin robust control design; ISO 14839-3 standard; PID controller; active magnetic bearings; electromechanical system; machine-tool industry; rotary flexible spindle; stability analysis; Control design; Electrical equipment industry; Electromechanical systems; ISO standards; Industrial control; Magnetic levitation; Probes; Robust control; Stability analysis; Three-term control; Magnetic Bearings; Robust Control; Stability Analysis; Symmetry;
Conference_Titel :
Decision and Control, 2007 46th IEEE Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
978-1-4244-1497-0
Electronic_ISBN :
0191-2216
DOI :
10.1109/CDC.2007.4434597