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2012 (Vol. 4, Issue: 07)
Article Information:

Study on Optimal Placement of Piezoelectric Actuators for a Whole Spacecraft Vibration Isolator

Liu Fang, Fang Bo and Huang Wen-Hu
Corresponding Author:  Fang Liu 

Key words:  Dynamic sensitivity, optimization criteria, piezoelectric stack actuator, whole-spacecraft vibration isolator, , ,
Vol. 4 , (07): 775-780
Submitted Accepted Published
2011 October, 03 2011 November, 18 2012 April, 01
Abstract:

Position of actuators plays an important role in active vibration control, which affects not only the performance of vibration control but also the stability of the whole system, especially for flexible structures. In this paper, dynamic sensitivity analysis method was used to derive an optimization criterion for Piezoelectric Stack Actuator (PSA), this criterion was only related to the dynamic characteristics of the structure itself and the features of disturbances, but was not affected by initial conditions and control methods. Then by using this criterion, optimal placement of the piezoelectric actuator of a Whole-Spacecraft Vibration Isolator (WSVI) was studied, and vibration control effect of random position and optimal position was compared; simulation results verified the validity of the criteria, and showed that the optimized location of actuator could greatly enhance the actuation efficiency and vibration control effect.
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  Cite this Reference:
Liu Fang, Fang Bo and Huang Wen-Hu, 2012. Study on Optimal Placement of Piezoelectric Actuators for a Whole Spacecraft Vibration Isolator.  Research Journal of Applied Sciences, Engineering and Technology, 4(07): 775-780.
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ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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