Optimal design of number and locations of actuators in active vibration control of a space truss

2002 ◽  
Vol 11 (4) ◽  
pp. 496-503 ◽  
Author(s):  
Y J Yan ◽  
L H Yam
Keyword(s):  
Optimal Design ◽  
Vibration Control ◽  
Active Vibration Control ◽  
Space Truss ◽  
Active Vibration

Active Vibration Control of a Space Truss Using PZT Stack Actuator

1999 ◽  
Author(s):  
Gangbing Song ◽  
John Vlattas ◽  
Scott E. Johnson ◽  
Brij N. Agrawal
Keyword(s):  
Vibration Control ◽  
Piezoelectric Ceramic ◽  
Proof Mass ◽  
Active Vibration Control ◽  
Force Transducer ◽  
Experimental Results ◽  
Naval Postgraduate School ◽  
Double Integral ◽  
Space Truss ◽  
Active Vibration

Abstract This paper presents design, implementation and experimental results of active vibration control of Naval Postgraduate School (NPS) Space Truss using a piezoelectric ceramic stack actuator. The NPS space truss represents a flexible spacecraft structure which may support interferometer, antenna, and other vibration-sensitive instrumentation. To simulate the effects of a spacecraft disturbance on the truss, a proof mass actuator is incorporated on the structure to excite the truss. To reduce the vibrations caused by the proof mass actuator, an active strut member is installed along a diagonal of the base bay of the truss. The active strut element consists of a piezoelectric ceramic actuator stack, a force transducer, and mechanical interfaces. An integral plus double-integral force controller is designed to suppress vibration of the truss. Experimental results demonstrate that the active piezoceramic strut actuator can effective reduce truss vibration.

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