DocumentCode :
2347381
Title :
Active vibration control under the actuator with magnetic hysteresis loop
Author :
Li, Chao ; Mao, Jianqin
Author_Institution :
Beijing Univ. of Aeronaut. & Astronaut., China
Volume :
2
fYear :
2005
fDate :
26-29 June 2005
Firstpage :
914
Abstract :
Multiple degree-of-freedom (DOF) vibration isolation is essential for precision control of space-borne structures and weapon systems. Experimental results are described in which six magnetostrictive TbDyFe actuators were used in the capacity of a cubic configuration Stewart platform and a high performance computation control system and an adaptive real-time control algorithm was used. A new design and analysis of actuators employing magnetostrictive material TbDyFe is presented. The nonlinear constitutive relation for magnetostrictive materials actuators is presented that includes nonlinear coupling effects changing with frequency and magnetic field applied on TbDyFe rod. Since the magnetostrictive actuator is a nonlinear plant with magnetic hysteresis loop, its multiple frequency active vibration control is more complicated. In this paper, a simple hyperstable adaptive recursive filter (SHARF) algorithm based on nonlinear model is proposed. The nonlinear model of magnetostrictive actuator is obtained by using radial basis neural network. The experimental result show that the proposed approach is real-time efficient. An attenuation of about 30 dB is achieved. The algorithm is also suitable as a reference to the stabilizing control of a class of nonlinear system with magnetic hysteresis loop.
Keywords :
actuators; adaptive control; control engineering computing; magnetic hysteresis; magnetostrictive devices; neurocontrollers; nonlinear control systems; radial basis function networks; stability; vibration control; active vibration control; adaptive real-time control algorithm; cubic configuration Stewart platform; high performance computation control system; hyperstable adaptive recursive filter algorithm; magnetic hysteresis loop; magnetostrictive actuators; multiple degree-of-freedom vibration isolation; nonlinear constitutive relation; nonlinear coupling effects; precision control; radial basis neural network; space-borne structures; stabilizing control; weapon systems; Actuators; Adaptive systems; Control systems; High performance computing; Magnetic hysteresis; Magnetic materials; Magnetic separation; Magnetostriction; Vibration control; Weapons;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Control and Automation, 2005. ICCA '05. International Conference on
Print_ISBN :
0-7803-9137-3
Type :
conf
DOI :
10.1109/ICCA.2005.1528252
Filename :
1528252
Link To Document :
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