Acceleration feedback active vibration control for seismic excited building structures with actuator saturation

Xu, Lanlan; Yu, Yunyan; Cui, Yanliang

doi:10.1016/j.soildyn.2018.08.039

Cited by 5 publications

(1 citation statement)

References 22 publications

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“…With the rapid development of the control theory, more and more control methods were applied to active vibration control (Takaba, 2015). 16–21 Abdul-Jabbar et al 16 designed a state feedback controller with optimal control theory to achieve desirable transient responses and a feed-forward controller to counteract the effect of the external excitations for a flexible rotor running with flexibly mounted journal bearings. The optimal control was applied to rotor-bearing-support systems, in which the rotor finite element models have relatively large degrees of freedom (DOF).…”

Section: Introductionmentioning

confidence: 99%

Active vibration control of a rotor-bearing-actuator system using robust eigenvalue placement method

Lai

Liu

2020

Measurement and Control

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In order to improve the vibration responses of rotor system, this paper presents an active vibration control technique for a rotor-bearing-actuator system with the use of robust eigenvalue placement method. By analyzing the characteristics of the piezoelectric stack actuator, bearing and rotor, a rotor-bearing-actuator system is modeled. Based on this dynamical model, a reduced-order technique is used to establish the state equation in the modal space. A robust eigenvalue placement method, which can enhance the robustness of system to model error and uncertain factors by optimizing the close-loop eigenmatrix with a small condition number, is proposed to carry out the active vibration control for system. The good results indicate that the eigenvalue can be placed to precise position, and the displacement responses get effectively suppressed with the proposed method. Meanwhile, the optimized close-loop eigenmatrix can possess a small condition number, which means the system has achieved excellent robustness.

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