Title :
Stability analysis to a fuzzy control system of a superconducting actuator including two nonlinear blocks
Author :
Kitamura, Tadashi ; Komori, Mochi
Author_Institution :
Coll. of Comput. Sci. & Syst. Eng., Kyushu Inst. of Technol., Fukuoka, Japan
Abstract :
The stability of a fuzzy control system of a high-Tc superconducting actuator is analyzed. The control system has two nonlinear blocks, due to a hysteretic force-displacement relation of the actuator and due to the fuzzy proportional-derivative (PD) controller. The control system is shown to be an equivalent to a two-variable Lurie system. A sufficient condition of asymptotic stability for the PD gains is obtained by applying stability theory to a multivariable Lurie system
Keywords :
control system analysis; electric actuators; fuzzy control; multivariable systems; nonlinear systems; stability; superconducting devices; two-term control; PD gains; fuzzy PD control; fuzzy control system; hysteretic force-displacement relation; multivariable Lurie system; nonlinear blocks; stability; sufficient condition; superconducting actuator; Actuators; Asymptotic stability; Control systems; Force control; Fuzzy control; Hysteresis; Nonlinear control systems; PD control; Proportional control; Stability analysis;
Conference_Titel :
Fuzzy Systems, 1993., Second IEEE International Conference on
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-0614-7
DOI :
10.1109/FUZZY.1993.327584
