Title :
Active vibration isolation by adaptive control
Author_Institution :
Mech. Eng. Dept., Huafan Univ., Taipei, Taiwan
Abstract :
An adaptive controller known as the self-tuning regulator (STR) is employed for actively controlling an actuator for vibration isolation. Numerical simulations of the developed STR for active vibration isolation of a simple mass-spring-damper system of two-degree-of-freedom subject to external disturbances are carried out. Experimental studies of vibration isolation by using a magnetostrictive actuator with a Terfenol-D rod are also presented. Both studies demonstrate the validity and effectiveness of the STR for active vibration isolation when the system is disturbed by a pure harmonic, two-modes harmonic, random, or even band-limited white noise excitation. In addition, the results are shown to be superior in terms of faster convergence and more vibration attenuation to those obtained by using a previously developed adaptive plant disturbance canceler
Keywords :
adaptive control; convergence; self-adjusting systems; vibration isolation; white noise; Terfenol-D rod; active vibration isolation; band-limited white noise excitation; external disturbances; magnetostrictive actuator; mass-spring-damper system; pure harmonic; random excitation; self-tuning regulator; two-modes harmonic; vibration attenuation; Adaptive control; Adaptive filters; Aerodynamics; Attenuation; Automatic control; Finite impulse response filter; Numerical simulation; Programmable control; Tuning; Vibration control;
Conference_Titel :
Control Applications, 1999. Proceedings of the 1999 IEEE International Conference on
Conference_Location :
Kohala Coast, HI
Print_ISBN :
0-7803-5446-X
DOI :
10.1109/CCA.1999.801195