動的補償器を用いた圧電素子・片持ばり系の振動制御

概要

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Unless the collocation requirement is satisfied, it is difficult to control the vibration of a mechanical system with direct velocity feedback control. In the control of a cantilever beam with a piezoelectric actuator and a displacement sensor, state-space methods are usually used because the actuator and sensor cannot be collocated. Though state-space methods are very useful, a large number of sensors at least equal to the number of eigenvalues concerned are needed to fulfill observability conditions. In this paper, a simple design for a stable dynamic compensator with which modal damping ratios of the mechanical system are greatly increased using a noncollocated actuator and sensor is proposed. Experimentally it is found that three natural frequencies of the cantilever beam are well damped with the designed compensator and calculated results of the mechanical system poles and forced response are consistent with experimental ones.
一般社団法人日本機械学会の論文
1996-05-25