Active vibration control of a smart plate using a piezoelectric sensor-actuator pair at elevated temperatures

Academic Article

Abstract

  • A new scheme for active structural vibration control using piezoelectric patches at elevated temperatures is analytically derived and experimentally verified. A control law is derived using augmented piezoelectric constitutive equations which include the temperature dependence of piezoelectric stress coefficient (e31) and permittivity . Since the temperature dependence of 'e31' and 'ε33' is not analytically known, their experimental values measured at elevated temperatures are used. Using augmented constitutive equations, a finite element model of a smart two-dimensional isotropic plate instrumented with a collocated piezoelectric sensor-actuator pair is derived. A control law for active vibration control of the first mode of the smart cantilevered plate is derived using negative velocity feedback. Active vibration control of the first mode of a smart cantilevered plate is experimentally achieved at elevated temperatures ranging from 25 to 75 °C under two cases: (i)using a control law which ignores the temperature dependence of 'e31' and ε33 and (ii)using a control law which includes the temperature dependence of 'e31' and ε33. A comparison between these two control laws shows that: (i)active vibration control (AVC) performance is not maintained at elevated temperatures using a control law which ignores the temperature dependence of 'e31' and ε33 and (ii)AVC performance is maintained at elevated temperatures when we use a control law which includes the temperature dependence of 'e31' and ε33. © 2011 IOP Publishing Ltd.
  • Authors

    Published In

    Digital Object Identifier (doi)

    Pubmed Id

  • 18362125
  • Author List

  • Gupta V; Sharma M; Thakur N; Singh SP
  • Volume

  • 20
  • Issue

  • 10