面向磁流变缓冲装置的快速响应励磁电流源研究

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Abstract The equivalent circuit model of the vehicle magnetorheological (MR) bumper is set up based on its impedance behavior and the time response requirement of the magnetic-excitation current source.The time expression of the changing coil current is obtained.The measures to reduce the response time of the MR bumper are then analyzed.A two-stage converter composed of a traditional isolated converter and a non-isolated one is proposed.The transfer function between the front and the back circuit is analyzed in theory.And the parameters of the circuit are selected reasonably.The actual circuit system is then fabricated.The dynamic response time of the circuit is tested.The results of the experiments indicate that,when driving the MR bumper load with equivalent 39.6 mH inductance and 11.7Ohm resistance,the circuit is controllable,the output current can be continuously ranged from 0 to 3 A,the response time of the activation is less than 5 milliseconds,and the response time is about 10 milliseconds,which satisfy the design requirement.

Key words： Magnetorheological(MR) bumper electric current driver two-stage converter multiple-output

Received: 28 November 2014 Published: 14 September 2015

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TM461

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	Articles by authors
	Tian Jie
	Liao Changrong
	Fu Benyuan
	Li Zhuqiang
	Zhang Honghui

Cite this article:

Tian Jie,Liao Changrong,Fu Benyuan等. Study on Rapid Response Magnetic-excitation Current Source for Magnetorheological Bumper Device[J]. Transactions of China Electrotechnical Society, 2015, 30(13): 12-18.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2015/V30/I13/12

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