This paper considers the feasibility of a new type of voice coil motor direct drive flow control servo valve. The proposed servo valve controls the flow rate using only a direct measurement of the spool position. A neural network is used to estimate the flow rate based on the spool position, velocity and coil current. The estimated flow rate is fed back to a closed loop controller. The feasibility of the concept is established using simulation techniques only at this point. All results are validated by computer co-simulation using AMESim and Simulink. A simulated model of a VCM-DDV (Voice Coil Motor-Direct Drive Valve) and hydraulic test circuit are built in an AMESim environment. A virtual digital controller is developed in a Simulink environment in which the feedback signals are received from the AMESim model; the controller outputs are sent to the VCM-DDV model in AMESim (by interfacing between these two simulation packages). A LQR (Linear Quadratic Regulator) state feedback and nonlinear compensator controller for spool position tracking is considered as this is the first step for flow control. A flow rate control loop is subsequently included via a neural network flow rate estimator. Simulation results show that this method could control the flow rate to an acceptable degree of precision, but only at low frequencies. This kind of valve can find usage in open loop hydraulic velocity control in many industrial applications.
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ASME 2009 Dynamic Systems and Control Conference
October 12–14, 2009
Hollywood, California, USA
Conference Sponsors:
- Dynamic Systems and Control Division
ISBN:
978-0-7918-4892-0
PROCEEDINGS PAPER
Feasibility Study on the Use of a Voice Coil Motor Direct Drive Flow Rate Control Valve
Richard Burton,
Richard Burton
University of Saskatchewan, Saskatoon, SK, Canada
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Zongxia Jiao,
Zongxia Jiao
Beihang University, Beijing, China
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Rongjie Kang
Rongjie Kang
Beihang University, Beijing, China
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Shuai Wu
Beihang University, Beijing, China
Richard Burton
University of Saskatchewan, Saskatoon, SK, Canada
Zongxia Jiao
Beihang University, Beijing, China
Juntao Yu
Beihang University, Beijing, China
Rongjie Kang
Beihang University, Beijing, China
Paper No:
DSCC2009-2631, pp. 621-628; 8 pages
Published Online:
September 16, 2010
Citation
Wu, S, Burton, R, Jiao, Z, Yu, J, & Kang, R. "Feasibility Study on the Use of a Voice Coil Motor Direct Drive Flow Rate Control Valve." Proceedings of the ASME 2009 Dynamic Systems and Control Conference. ASME 2009 Dynamic Systems and Control Conference, Volume 1. Hollywood, California, USA. October 12–14, 2009. pp. 621-628. ASME. https://doi.org/10.1115/DSCC2009-2631
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