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International Standard Serial Number:
ISSN 1001-4551
Sponsor:
Zhejiang University;
Zhejiang Machinery and Electrical Group
Edited by:
Editorial of Journal of Mechanical & Electrical Engineering
Chief Editor:
ZHAO Qun
Vice Chief Editor:
TANG ren-zhong,
LUO Xiang-yang
Tel:
86-571-87041360,87239525
Fax:
86-571-87239571
Add:
No.9 Gaoguannong,Daxue Road,Hangzhou,China
P.C:
310009
E-mail:
meem_contribute@163.com
Abstract: The nonlinear problem of the angle increment and the control pulse time length of the incremental electric valve actuator makes it difficult to meet the execution positioning accuracy index of the terminal.Aiming at this problem, the relationship between valve rotation angle and time is studied, and a valve control system that can realize positioning compensation was developed. Firstly, the principle of incremental electric valve drive was analyzed and a MATLAB simulation model was established. Then, a valve positioning accuracy test device was developed. The actual angle of the electric valve actuator was accurately measured by high precision photoelectric encoder. The relationship between the angle and the time length of the control signal was obtained by experiments, and the function expression of the opening increment and the control pulse time length was fitted. Then, a control strategy to achieve positioning compensation by changing the pulse length of the control signal was proposed. Finally,an experimental platform was built to verify the simulation results, a microcontroller control system capable of realizing positioning compensation was developed. The research results show that when the control pulse time length was less than 1 s, the compensated angular error rate reduces from 53% to 24%, and the positioning accuracy has improved more than 2 times. It provides a theoretical and technical reference for the precise positioning control of the electric valve actuator.
Key words: hydraulic control valve; incremental electric valve; valve control strategy; valve positioning accuracy; valve actuator; measurement of corner characteristics; positioning compensation
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- Chinese Core Periodicals
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- Chinese Sci-tech Core Periodicals
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- SA, INSPEC Indexed
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- CSA: T Indexed
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- UPD:Indexed
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2010 Zhejiang Information Institute of Mechinery Industry
Technical Support：Hangzhou Bory science and technology
