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Piezo actuator placement and sizing for good control effectiveness and minimal change in original system dynamics

DSpace at IIT Bombay

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Title Piezo actuator placement and sizing for good control effectiveness and minimal change in original system dynamics
 
Creator DHURI, KD
SESHU, P
 
Subject active vibration control
piezoelectric actuators
genetic algorithms
beam
controllability
sensor
plates
 
Description Piezoelectric actuators are commonly considered for active vibration control of smart structures. The placement and sizing of the actuators are normally decided based on control effectiveness. A piezo actuator affects the host structure's mass and stiffness properties and thus alters the original system, which would have been designed to have a certain natural frequency spectrum in relation to the disturbance excitation. For a rotating structure, the mass of the actuator additionally contributes to the centrifugal stiffening effect. In the event of failure of the active system, natural frequencies of the structure with piezos ( now rendered passive) become significant. Considering the example of a stationary and rotating beam-like structure, it is attempted to identify the piezo actuator sizing and location that possess significant control effectiveness yet cause minimal change in the system dynamics.
 
Publisher IOP PUBLISHING LTD
 
Date 2011-08-03T23:25:59Z
2011-12-26T12:54:26Z
2011-12-27T05:42:20Z
2011-08-03T23:25:59Z
2011-12-26T12:54:26Z
2011-12-27T05:42:20Z
2006
 
Type Article
 
Identifier SMART MATERIALS & STRUCTURES, 15(6), 1661-1672
0964-1726
http://dx.doi.org/10.1088/0964-1726/15/6/019
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9172
http://hdl.handle.net/10054/9172
 
Language en