同期式能動防振支持の能動制振による安定化

概要

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This paper presents a stabilization method of synchronized active control for machinery vibration isolation. The stability of the synchronized vibration control can be lost when occuring changes in the vibration characteristics of the system. The stabilization is accomplished by active damping control using the actuators for isolation, which smoothes the curves of the transfer functions between the control signals and the residual vibrations. Three damping control methods are proposed : (1) Feedback of the velocity at the actuator upper part ; (2) Feedback of the velocity at the actuator lower part ; (3) Feedback of the integrated force through the isolator. For the typical modal models of vibration systems, the stabilization performances of these feedbacks are examined numerically, evaluating eigen values of the state transition matrix of the synchronized isolation control. The effectiveness of these methods is demonstrated experimentally, using a machinery model supported by 4 piezoelectric actuators. It is also found that the isolation effects are increased by the active damping control.
社団法人日本機械学会の論文
1993-02-25