title: Induced Voltage Linear Extraction Method Using an Active Kelvin Bridge for Disturbing Force Self-Sensing.
abstract: This paper presents an induced voltage linear extraction method for disturbing force self-sensing in the application of giant magnetostrictive actuators (GMAs). In this method, a Kelvin bridge combined with an active device is constructed instead of a conventional Wheatstone bridge for extraction of the induced voltage, and an additional GMA is adopted as a reference actuator in the self-sensing circuit in order to balance the circuit bridge. The linear fitting of the measurement data is done according to the linear relationship between the disturbing forces and the integral of the induced voltage. The experimental results confirm the good performance of the proposed method, and the self-sensitivity of the disturbing forces is better than 2.0 (mV·s)/N.
authors.affiliation: Harbin Institute of Technology, D-401 Science Park, No. 2 Yikuang Street, Harbin 150080, China. yyy42616500@126.com.
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Yang
authors.affiliation: Harbin Institute of Technology, D-401 Science Park, No. 2 Yikuang Street, Harbin 150080, China. hit_wanglei@163.com.
authors.forename: Lei
authors.initials: L
authors.lastname: Wang
authors.affiliation: Harbin Institute of Technology, D-401 Science Park, No. 2 Yikuang Street, Harbin 150080, China. jbtan@hit.edu.cn.
authors.forename: Jiubin
authors.initials: J
authors.lastname: Tan
authors.affiliation: Harbin Institute of Technology, D-401 Science Park, No. 2 Yikuang Street, Harbin 150080, China. hitzhaobo@hit.edu.cn.
authors.forename: Bo
authors.initials: B
authors.lastname: Zhao
keywords: Kelvin bridge; giant magnetostrictive actuator; induced voltage; self-sensing