- Title
- Design of a charge drive for reducing hysteresis in a piezoelectric bimorph actuator
- Creator
- Rios, Shannon A.; Fleming, Andrew J.
- Relation
- IEEE/ASME Transactions on Mechatronics Vol. 21, Issue 1, p. 51-54
- Publisher Link
- http://dx.doi.org/10.1109/TMECH.2015.2483739
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Resource Type
- journal article
- Date
- 2016
- Description
- This paper describes the design of a charge drive for reducing the hysteresis exhibited by a piezoelectric bimorph bender. Existing charge drive circuits cannot be directly applied to bimorph benders since they share a common electrode. In this paper, a new charge drive circuit and electrical configuration are implemented that allows commonly available piezoelectric bimorphs to be linearized. This circuit consists of four major components, including, a high voltage amplifier, a differential amplifier, a piezoelectric load, and a PI feedback controller. An isolation amplifier was used to achieve a differential amplifier with a high common-mode rejection ratio. The charge drive was tested by driving a series poled three layer bimorph bender. The experiment showed a significant improvement to the hysteresis of the bender when compared to a typical voltage drive. This paper has identified an alternative Feedback method to improve the ac hysteresis performance of a piezoelectric bender by using a charge drive.
- Subject
- voltage control; differential amplifiers; driver circuits; feedback; hysteresis; PI control; piezoelectric actuators
- Identifier
- http://hdl.handle.net/1959.13/1321829
- Identifier
- uon:24458
- Identifier
- ISSN:1083-4435
- Rights
- © 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
- Language
- eng
- Full Text
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