Active vibration control method of double crystal monochromator of P2 protein crystallography beam line at SSRF

2021 ◽  
pp. 165906
Author(s):  
Yang Bai ◽  
Xuepeng Gong ◽  
Qipeng Lu ◽  
Yuan Song ◽  
Dazhuang Wang ◽  
...  
Keyword(s):  
Vibration Control ◽  
Control Method ◽  
Active Vibration Control ◽  
Protein Crystallography ◽  
Beam Line ◽  
Double Crystal ◽  
Double Crystal Monochromator ◽  
Active Vibration ◽  
P2 Protein

Comparison of Active and Hybrid Vibration Confinement With Conventional Active Vibration Control

1999 ◽  
Author(s):  
Lawrence R. Corr ◽  
William W. Clark
Keyword(s):  
Vibration Control ◽  
Control Method ◽  
Numerical Study ◽  
Active Vibration Control ◽  
Piezoelectric Actuators ◽  
Control Technique ◽  
Flexible Beam ◽  
Velocity Feedback ◽  
Active Vibration ◽  
Piezoelectric Actuators And Sensors

Abstract This paper presents a numerical study in which active and hybrid vibration confinement is compared with a conventional active vibration control method. Vibration confinement is a vibration control technique that is based on reshaping structural modes to produce “quiet areas” in a structure as opposed to adding damping as in conventional active or passive methods. In this paper, active and hybrid confinement is achieved in a flexible beam with two pairs of piezoelectric actuators and sensors and with two vibration absorbers. For comparison purposes, active damping is achieved also with two pairs of piezoelectric actuators and sensors using direct velocity feedback. The results show that both approaches are effective in controlling vibrations in the targeted area of the beam, with direct velocity feedback being slightly more cost effective in terms of required power. When combined with passive confinement, however, each method is improved with a significant reduction in required power.

510 Evaluation of Active Vibration Control method of a Carrier in Warehouse using a Simulation : Experiment Integrated System

2000 ◽  
Vol 2000.53 (0) ◽  
pp. 143-144
Author(s):  
Yoshitoshi JONO ◽  
Masanobu NAGATA ◽  
Zenta IWAI ◽  
Ryuichi KOHZAWA ◽  
Jun IMAMURA ◽  
...  
Keyword(s):  
Vibration Control ◽  
Simulation Experiment ◽  
Control Method ◽  
Active Vibration Control ◽  
Integrated System ◽  
Active Vibration

Active Vibration Control Based on Self-Sensing for Unknown Target Structures by Direct Velocity Feedback With Adaptive Feed-Forward Cancellation

2013 ◽  
Author(s):  
Shota Yabui ◽  
Itsuro Kajiwara ◽  
Ryohei Okita
Keyword(s):  
Control System ◽  
Vibration Control ◽  
Control Method ◽  
Active Vibration Control ◽  
Mechanical Resonance ◽  
Velocity Feedback ◽  
Feed Forward ◽  
Periodic Disturbance ◽  
Active Vibration ◽  
The Voice

This paper presents active vibration control based on self-sensing for unknown target structures by direct velocity feedback (DVFB) with enhanced adaptive feed-forward cancellation (AFC). AFC is known as an adaptive control method, and the adaptive algorithm can estimate a periodic disturbance. In a previous study, an enhanced AFC was developed to compensate for a non-periodic disturbance. An active vibration control based on self-sensing by DVFB can suppress mechanical resonance by using relative velocity between the voice coil actuator and a target structure. In this study, the enhanced AFC was applied to compensate disturbance for the self-sensing vibration control system. The simulation results showed the vibration control system with DVFB and enhanced AFC could suppress mechanical resonance and compensate disturbances.

scholarly journals An Active Vibration Control by means of a Simple Adaptive Control Method.

1992 ◽  
Vol 58 (548) ◽  
pp. 1034-1040 ◽  
Author(s):  
Mitsushi HINO ◽  
Zenta IWAI ◽  
Kousuke FUKUSHIMA ◽  
Ryuichi WAKAMIYA
Keyword(s):  
Adaptive Control ◽  
Vibration Control ◽  
Control Method ◽  
Active Vibration Control ◽  
Active Vibration

Optimal Research of Actuator Placement for Piezoelectric Smart Structure

2009 ◽  
Vol 419-420 ◽  
pp. 173-176
Author(s):  
Wei Yuan Wang ◽  
Kai Xue ◽  
Dong Yan Shi
Keyword(s):  
Vibration Control ◽  
Control Method ◽  
Active Vibration Control ◽  
Element Model ◽  
Smart Structure ◽  
Optimal Placement ◽  
Optimal Method ◽  
Modal Damping ◽  
Active Vibration ◽  
Modal Space

The purpose of this paper is to investigate the optimal placement of piezoelectric actuator for active vibration control of smart structure. The structures can be described in the modal space based on the independent modal space control method and dynamic equations derived from finite element model. The modal damping ratios are derived from modal equations and an optimal target is given by maximizing the modal damping ratios. Accumulation method is adopted to the optimization calculation. Simulations are carried out for active vibration control of a conical shell with distributed piezoelectric actuators. Control effects proved the validity of the optimal method above by compared with the non-optimal results. The optimal method in this paper gives a useful guide for quantity optimization of actuators to piezoelectric structures.

Active Residual Vibration Control for Flexible Robot Manipulator Systems

1998 ◽  
Author(s):  
Zhang Xianmin ◽  
Song Li ◽  
Liu Jike
Keyword(s):  
Vibration Control ◽  
Control Method ◽  
Robot Manipulator ◽  
Active Vibration Control ◽  
Computational Method ◽  
Beam Model ◽  
Flexible Robot ◽  
Linear Quadratic ◽  
Active Vibration ◽  
Optimal Control Scheme

Abstract In this paper, a mathematical model for flexible robot manipulators with smart links featuring piezoelectric films is developed in conjunction with the finite element method. The dynamics of piezoelectric actuators and strain gage sensors bonded on the flexible links are presented for beam model. Theory and measures of active vibration control for flexible manipulators are studied based on the modal and modern control theory, and the correspondent optimal control scheme is proposed. The robust control low is formulated based on the modified independent modal control method and the Linear Quadratic theory. The computational method for the actual control moments and the control voltages are also presented.

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