Self Sensing Techniques for Piezoelectric Vibration Applications 1st Edition by Emanuele Grasso ISBN 383253623X 9783832536237

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Product details:

ISBN 10: 383253623X

ISBN 13: 9783832536237 

Author:  Emanuele Grasso 

Self sensing techniques allow using a piezoelectric transducer simultaneously as an actuator and as a sensor, as they reconstruct its mechanical sensory information by measuring its electrical quantities, i.e. voltage and charge. In vibration control applications piezoelectric self sensing actuators are highly desirable as they allow precise collocated control.

Past research work was mainly based on the linear behavior of piezoelectric materials, thus restricting the operating driving voltages to low values.

This work addresses the problem of using a self sensing piezoelectric actuator at its full driving voltage range. A new self sensing technique is proposed, which is based on the hysteretic modeling and identification of the piezoelectric transducer capacitance. After providing a sound presentation on piezoelectricity and vibrating structures, the most common self sensing techniques are discussed and the new self sensing technique is introduced and compared to typical linear methods both theoretically and experimentally.

Table of contents:

Chapter 1: Introduction

• State of the art

• Aim of this work

Chapter 2: Piezoelectricity and vibrating structures

• Piezoelectricity

  • Piezoelectric effect

  • Constitutive equations for piezoelectric materials

  • Piezoelectric nonlinearities

  • Piezoelectric transducers and actuators

• Vibrating structures

  • Modal analysis

  • Modal analysis of a thin cantilevered beam

  • Modal analysis of a thin plate

• Piezoelectric Vibrating Structures (PVS)

  • Piezoelectric static actuation in a PVS

  • Dynamic model of a PVS – Rayleigh-Ritz formulation

  • Transfer functions for a PVS

Chapter 3: Self sensing techniques for piezoelectric materials

• Strain and stress reconstruction

  • One step reconstruction

  • Two steps reconstruction

• Dimensioning of self sensing piezoelectric plates

• Bridge-circuit based reconstruction

  • Limits of a typical bridge based self sensing technique

  • Adaptive algorithms for self sensing techniques

  • Limits of the linear piezoelectric capacitance model

• Hysteretic dynamic model of a PVS

  • Transfer functions for a PVS with self sensing actuators

• Hysteretic model based reconstruction

• Self sensing techniques implementation

  • Self sensing analogic implementation

  • Self sensing digital implementation

  • Self sensing digital and hybrid implementations with adaptive identification

Chapter 4: Electronics for self sensing applications

• Variable capacitance multiplier

• Sawyer Tower circuit

• Active Sawyer Tower circuit

  • Active Sawyer Tower for power demanding applications

• Active Sawyer Tower with temperature measurement

Chapter 5: Experimental verification and results

• Piezoelectric cantilevered beam

  • Experimental set up description

  • Structural frequency response

  • Self sensing linear reconstruction

  • Self sensing hysteretic reconstruction

  • Open loop response comparison

  • Vibration control with self sensing reconstruction

• Partially clamped piezoelectric plate

  • Experimental set up description

  • Structural frequency response

  • Self sensing linear reconstruction

  • Self sensing hysteretic reconstruction

  • Vibration control with self sensing reconstruction

• Comparison between linear and hysteretic reconstructions

Chapter 6: Conclusion

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Tags: Emanuele Grasso, Self Sensing Techniques, Piezoelectric, Vibration, Applications, Engineering, Technology