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TECHNICAL PAPERS

Analysis of Electromagnetic Nonlinearities in Stage Control of a Stepper Motor and Spool Valve

[+] Author and Article Information
Rich Burton, Paul Ukrainetz

Department of Mechanical Engineering, University of Saskatchewan, Saskatoon, Canada

Jian Ruan

Department of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, People’s Republic of China

J. Dyn. Sys., Meas., Control 125(3), 405-412 (Sep 18, 2003) (8 pages) doi:10.1115/1.1592812 History: Received April 25, 2002; Revised March 10, 2003; Online September 18, 2003
Copyright © 2003 by ASME
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References

Merritt, H. E., 1967, Hydraulic Control Systems, John Wiley & Sons, New York, pp. 237–239.
Burton, R., Ukrainetz, P., and Nikiforuk, P., 1973, “Analytic Prediction of Limit Cycle Oscillations in an Inertially Loaded Hydraulic Control Valve,” Proceedings of International Conference on Hydraulics, Pneumatics and Fluidics in Control and Automation, BHRA, Turino, Italy, paper No. E4.
Shearer, J. L., 1980, “Effect of Radial Clearance, Rounded Edges, and Underlap on Hydraulic Servo Valve Characteristics,” Proceedings of the Joint Automatic Control Conference, Vol. 1, paper TA9-G, pp. 124–132.
Arafa,  H. A., and Rizk,  M., 1987, “Identification and Modelling of Some Electrohydraulic Servo Valve Non-linearities,” Proc. Inst. Mech. Eng., Part C: Mech. Eng. Sci., 201(C2), pp. 137–145.
Leu, M., Henke, R., and Jacksons, R., 1985, “Application of Optimization on Theory to the Design of Torque Motors,” Presented at the ASME Design Engineering Division Conference, Cincinnati, Ohio, paper 85-DET-98, pp. 48–55.
Ruan, J., and Burton, R., 1999, “Direct Digital Control of 2D Directional Valve,” Proceedings of the Sixth Scandinavian International Conference on Fluid Power, Tampere, Finland, pp. 134–137.
Ruan,  J., Ukrainetz,  P., and Burton,  R., 2003, “Frequency Domain Modelling and Identification of 2D Digital Servo Valve,” International Journal of Fluid Power, 4 (1), pp. 49–58.
Ruan, J., and Burton, R., 1999, A New Approach of Direct Digital Control for Spool Valves, ASME, Nashville, Tennessee FPST-Vol. 6, pp. 115–124.
Ruan, J., Burton, R., and Ukrainetz, P., 2002, “Some Experimental Considerations of Stage Control in Digital Valves,” ASME, New Orleans, FPST-Vol. 9, pp. 1–10.
Li, S., Ruan, J., Burton, R., and Ukrainetz, P., 2002, “Application of Stage Control in Material Testing Machine (MTS),” Proceedings of 2nd Chinese International Conference on Instrumentation Science, Jinan, China, pp. 526–529.
Singh,  G., and Kuo,  B. C., 1974, “Modeling and Dynamic Simulation of Multiple-stack Variable-reluctance Step Motors,” Computers in Electrical Engineering, 1 , pp. 481–500.

Figures

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Typical nonlinear characteristics in a stepper motor for one cycle in current
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Principle of stage control
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Graphical definition of the error rates
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Experimental arrangement
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Saturation under different current supply: a two steps, ir/imax=2;b eight steps, ir/imax=2;c two steps, ir/imax=0.75;d eight steps, ir/imax=0.75
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Input-output characteristics under different pressures

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