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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2009, Vol. 10 Issue (9): 1241-1244    DOI: 10.1631/jzus.A0920079
Mechanical and Mechanics Engineering     
A current-differential-based method for improving dynamic characteristics of electromagnetic actuators
Ping FANG, Qi-peng LI, Fan DING
State Key Lab of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China; School of Mechanical and Automotive Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China
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Abstract  This paper presents a new control strategy based on current differential feedback to accelerate the dynamic response of electromagnetic actuators, instead of traditional closed-loop control based on displacement feedback. The method mainly includes a differentiator, proportioner and signal synthesizer. Analysis and simulation on the step characteristics of an electromagnetic actuator were discussed, and all the results show that the approach can improve the actuator’s step response greatly. Finally, the control method is applied to a real gravure system which verifies the control performance.

Key words： Electromagnetic actuator      Control method      Dynamic characteristics      Current differential     
Received: 11 February 2009     
CLC:  TH134  
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Ping FANG, Qi-peng LI, Fan DING. A current-differential-based method for improving dynamic characteristics of electromagnetic actuators. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2009, 10(9): 1241-1244.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A0920079     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2009/V10/I9/1241

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