High Speed Model Implementation and Inversion Techniques for Ferroelectric and Ferromagnetic Transducers

• Published in: Journal of intelligent material systems and structures Vol. 19; no. 11; pp. 1295 - 1310
• Main Authors: Braun, T.R., Smith, R.C.
• Format: Journal Article
• Language: English
• Published: London, England SAGE Publications 01-11-2008; Sage Publications
• Subjects: Acoustics; Exact sciences and technology; Fundamental areas of phenomenology (including applications); General equipment and techniques; Instruments, apparatus, components and techniques common to several branches of physics and astronomy; Measurement and testing methods; Physics; Servo and control equipment; robots; Solid mechanics; Structural and continuum mechanics; Transduction; acoustical devices for the generation and reproduction of sound; Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...); ferroelectric; actuator; magnetostrictive; Terfenol; piezoelectric; Constitutive equation; Ferroelectric device; Magnetometers; Machining; Ferromagnetic materials; Control synthesis; Inversion; Modeling; Ultrasonic control; Vibration control; Vibration source; Actuator; Mechanical deformation; Acoustic measurement; Sonar; Multistage apparatus; Solid state; Ferroelectricity; Milling; Non linear effect; Effective medium model; Non destructive test; Ultrasonic transducer; Electromechanical properties
• ISSN: 1045-389X; 1530-8138
• DOI: 10.1177/1045389X07085638

Ferroelectric and ferromagnetic materials are employed as both actuators and sensors in a wide variety of applications including fluid pumps, nanopositioning stages, sonar transducers, vibration control, ultrasonic sources, and high-speed milling. They are attractive because the resulting transducers are solid-state and often very compact. However, the coupling of field to mechanical deformation, which makes these materials effective transducers, also introduces hysteresis and time-dependent behavior that must be accommodated in device designs and models before the full potential of compounds can be realized. In this article, we present highly efficient modeling techniques to characterize hysteresis and constitutive nonlinearities in ferroelectric and ferromagnetic compounds and model inversion techniques which permit subsequent linear control designs.