Modeling and compensation of piezoceramic actuator hysteresis for helicopter vibration control

Viswamurthy, SR and Ganguli, Ranjan (2007) Modeling and compensation of piezoceramic actuator hysteresis for helicopter vibration control. In: Sensors and Actuators A: Physical, 135 (2). pp. 801-810.

PDF Modeling_and_compensation.pdf - Published Version Restricted to Registered users only Download (1MB) | Request a copy

Abstract

Hysteresis in piezoceramic materials causes considerable complications in the use of piezo actuators in applications, such as vibration control. In this study, the classical Preisach model is used to characterize the hysteresis in a piezostack actuator used to move a trailing-edge flap for helicopter vibration control. The hysteresis in the actuator is primarily due to material nonlinearity and to a lesser extent due to losses in the amplification mechanism. Most helicopter vibration control studies ignore the effect of the hysteresis on the actuator performance. The desired motion of the flap for maximum reduction in vibration is determined using an aeroelastic analysis of the helicopter. Numerical results indicate that complete compensation of actuator hysteresis can result in up to 90% reduction in helicopter vibrations. The performance of the vibration control system deteriorates considerably when the actuator is represented by a linear model or when the compensator is based only on the primary material hysteresis of the actuator. Complete compensation of both material and mechanical hysteresis in the actuator is therefore critical to the performance of the trailing-edge flap vibration control system in a helicopter.

Item Type:	Journal Article
Publication:	Sensors and Actuators A: Physical
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier.
Keywords:	Piezoceramic actuator;Hysteresis;Classical Preisach model;Compensation;Helicopter;Vibration control
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	11 Jul 2007
Last Modified:	25 Jan 2012 08:24
URI:	http://eprints.iisc.ac.in/id/eprint/11497

Actions (login required)

View Item