Design Innovation Papers

Novel Pressure-Resistant Oil-Immersed Proportional Actuator for Electrohydraulic Proportional Control Valve

[+] Author and Article Information
Chuan Ding

e-mail: dc1986@zju.edu.cn

Fan Ding

e-mail: fding@zju.edu.cn

Xing Zhou

e-mail: zx861108@126.com

Shuo Liu

e-mail: liushuo@sina.com

Canjun Yang

e-mail: ycj@zju.edu.cn
The State Key Lab of Fluid Power
Transmission and Control,
Zhejiang University,
Hangzhou 310027, China

1Corresponding author.

Contributed by the Design Innovation and Devices of ASME for publication in the JOURNAL OF MECHANICAL DESIGN. Manuscript received September 11, 2012; final manuscript received July 30, 2013; published online September 18, 2013. Assoc. Editor: Alexander Slocum.

J. Mech. Des 135(12), 125001 (Sep 18, 2013) (5 pages) Paper No: MD-12-1448; doi: 10.1115/1.4025194 History: Received September 11, 2012; Revised July 30, 2013

This paper presents a novel pressure-resistant oil-immersed proportional actuator with a magnetic grid magnetic-isolated ring (MGMR) on its single-piece sleeve. A two-dimensional finite element method is used to establish the model and analyze the static and dynamic performance. The experimental and simulation results agree well with each other and verify the static and dynamic performance characteristics of this proportional actuator. The results indicate that the actuator can produce 15 N force output when the ampere turns is 450AT in 2.2-mm wide working stroke; the rising step response time and the falling step response time are 24 and 17 ms, respectively, and the frequency response (−3dB) is 25 Hz. Consequently, its applications to electrohydraulic proportional/servo valve are acceptable.

Copyright © 2013 by ASME
Topics: Pressure , Actuators
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Fig. 1

Structure of the novel proportional actuator

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Fig. 2

Structures of three kinds of magnetic-isolated rings: (a) MGMR; (b) NMMR; and (c) ATMR

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Fig. 3

Magnetic flux of the actuators: (a) MGMR; (b) NMMR; and (c) ATMR

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Fig. 4

Initial dc magnetization curve of DT4b

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Fig. 5

Half cross section

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Fig. 6

Schematic of the experimental system

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Fig. 7

Static force characteristics versus displacement

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Fig. 8

Static force characteristic versus current

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Fig. 9

Step response: (a) rising edge (b) falling edge

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Fig. 10

Frequency response




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