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CLC number: TH113; TH161

On-line Access: 2007-11-10

Received: 2007-06-10

Revision Accepted: 2007-09-05

Crosschecked: 0000-00-00

Cited: 4

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Citations:  Bibtex RefMan EndNote GB/T7714

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Journal of Zhejiang University SCIENCE A 2008 Vol.9 No.1 P.99~103


Theory and experiment of observer based magnetostrictive self-sensing actuator

Author(s):  Zhi-feng TANG, Fu-zai LV, Zhan-qin XIANG

Affiliation(s):  Modern Manufacture Engineering Institute, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   tangzf2001@yahoo.com, lufuzai@yahoo.com

Key Words:  Magnetostrictive, Self-sensing actuator, Hysteresis, Giant magnetostrictive actuators (GMAs)

Zhi-feng TANG, Fu-zai LV, Zhan-qin XIANG. Theory and experiment of observer based magnetostrictive self-sensing actuator[J]. Journal of Zhejiang University Science A, 2008, 9(1): 99~103.

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T1 - Theory and experiment of observer based magnetostrictive self-sensing actuator
A1 - Zhi-feng TANG
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A1 - Zhan-qin XIANG
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DOI - 10.1631/jzus.A071402

Giant magnetostrictive actuators (GMAs) often work in a close-loop feedback system. This system needs independent sensors which may be difficult to be fixed, besides, excessive sensors may cause more unpredicted problems in a large system. This paper aims to develop a self-sensing GMA. An observer based on piezomagnetic equations is constructed to estimate the stress and strain of the magnetostrictive material. The observer based self-sensing approach depends on the facts that the magnetic field is controllable and that the magnetic induction is measurable. Aiming at the nonlinear hysteresis in magnetization, a hysteresis compensation observer based on Preisach model is developed. Experiment verified the availability of the observer approach, and the hysteresis compensation observer has higher tracking precision than linear observer for dynamic force sensing.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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