Flow control valves are extensively used to control the motion of hydraulic actuators in industry. In this paper, a two-stage proportional flow control valve with pilot digital pressure compensator is presented. The proposed valve is composed of two pressure sensors, a proportional pilot valve, a Valvistor poppet valve (main stage), and an electronic controller. The pressure drop across the pilot valve metering orifice is detected by two pressure sensors and fed into the controller which changes the pilot valve input voltage to compensate pressure influence on the outlet flow. The presented valve is investigated theoretically by simplified analytical models as well as numerical methods and also evaluated experimentally. The results show that the proposed scheme is feasible. It has a reasonable static performance and an acceptable dynamic characteristic for low bandwidth disturbances. The flow force on the Valvistor poppet should be estimated and considered in the controller design.
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January 2017
Research-Article
Performance of Proportional Flow Valve With Pilot Pressure Drop—Spool Opening Compensation
Jiahai Huang,
Jiahai Huang
Key Laboratory of Advance Transducers
and Intelligent Control System,
Ministry of Education,
Taiyuan University of Technology,
Taiyuan 030024, China
and Intelligent Control System,
Ministry of Education,
Taiyuan University of Technology,
Taiyuan 030024, China
Search for other works by this author on:
Jiangjiao Dai,
Jiangjiao Dai
Key Laboratory of Advance Transducers
and Intelligent Control System,
Ministry of Education,
Taiyuan University of Technology,
Taiyuan 030024, China
and Intelligent Control System,
Ministry of Education,
Taiyuan University of Technology,
Taiyuan 030024, China
Search for other works by this author on:
Long Quan,
Long Quan
Key Laboratory of Advance Transducers
and Intelligent Control System,
Ministry of Education,
Taiyuan University of Technology,
Taiyuan 030024, China
e-mail: quanlong@tyut.edu.cn
and Intelligent Control System,
Ministry of Education,
Taiyuan University of Technology,
Taiyuan 030024, China
e-mail: quanlong@tyut.edu.cn
Search for other works by this author on:
Yuan Lan
Yuan Lan
Key Laboratory of Advance Transducers
and Intelligent Control System,
Ministry of Education,
Taiyuan University of Technology,
Taiyuan 030024, China
and Intelligent Control System,
Ministry of Education,
Taiyuan University of Technology,
Taiyuan 030024, China
Search for other works by this author on:
Jiahai Huang
Key Laboratory of Advance Transducers
and Intelligent Control System,
Ministry of Education,
Taiyuan University of Technology,
Taiyuan 030024, China
and Intelligent Control System,
Ministry of Education,
Taiyuan University of Technology,
Taiyuan 030024, China
Jiangjiao Dai
Key Laboratory of Advance Transducers
and Intelligent Control System,
Ministry of Education,
Taiyuan University of Technology,
Taiyuan 030024, China
and Intelligent Control System,
Ministry of Education,
Taiyuan University of Technology,
Taiyuan 030024, China
Long Quan
Key Laboratory of Advance Transducers
and Intelligent Control System,
Ministry of Education,
Taiyuan University of Technology,
Taiyuan 030024, China
e-mail: quanlong@tyut.edu.cn
and Intelligent Control System,
Ministry of Education,
Taiyuan University of Technology,
Taiyuan 030024, China
e-mail: quanlong@tyut.edu.cn
Yuan Lan
Key Laboratory of Advance Transducers
and Intelligent Control System,
Ministry of Education,
Taiyuan University of Technology,
Taiyuan 030024, China
and Intelligent Control System,
Ministry of Education,
Taiyuan University of Technology,
Taiyuan 030024, China
1Corresponding author.
Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received November 9, 2015; final manuscript received August 12, 2016; published online October 17, 2016. Assoc. Editor: Heikki Handroos.
J. Dyn. Sys., Meas., Control. Jan 2017, 139(1): 011009 (8 pages)
Published Online: October 17, 2016
Article history
Received:
November 9, 2015
Revised:
August 12, 2016
Citation
Huang, J., Dai, J., Quan, L., and Lan, Y. (October 17, 2016). "Performance of Proportional Flow Valve With Pilot Pressure Drop—Spool Opening Compensation." ASME. J. Dyn. Sys., Meas., Control. January 2017; 139(1): 011009. https://doi.org/10.1115/1.4034504
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