Estimation of Inductance Derivative for Force Control of Linear Switched Reluctance Actuator

Author

Jiongkang Lin ; Cheng, K.W.E. ; Xiangdang Xue ; Cheung, Norbert C. ; Zhu Zhang

Author_Institution

Dept. of Electr. Eng., Hong Kong Polytech. Univ., Hong Kong, China

Volume

50

Issue

11

fYear

2014

fDate

Nov. 2014

Firstpage

1

Lastpage

4

Abstract

This paper presents an inductance derivative estimation method of linear switched reluctance actuator (LSRA) employing tracking-differentiating technology. The inductance of LSRA is highly nonlinear and varies with phase current and translator position. To achieve direct force control, the derivative of inductance must be estimated to generate required phase currents. The inductance profile of LSRA is obtained from finite element analysis calculation. Tracking differentiator is introduced to track the inductance and its derivative for further control purpose. A simple Proportional-Integral control with compensation unit using the estimated inductance derivative is used to examine the effectiveness of the estimation of inductance derivative.

Keywords

PI control; actuators; compensation; finite element analysis; force control; position control; LSRA; compensation unit; finite element analysis; force control; inductance derivative estimation; linear switched reluctance actuator; phase current; proportional-integral control; tracking-differentiating technology; translator position; Actuators; Estimation; Force; Force control; Inductance; Noise; Switched reluctance motors; Force control; inductance derivative estimation; linear switched reluctance actuator (LSRA); tracking differentiator (TD);

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2014.2334312

Filename

6971314