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Condition Monitoring of a Hydraulic Valve Through On-Line Estimation of the Valve Orifice Area Profile
Technical Paper
2000-01-2594
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Flow rate monitoring plays a crucial role for precise motion control in many hydraulic systems and for detection of faults and fluid loss in hydraulic system components and circuits. In some situations, however, direct measurement of fluid flow is not possible. Besides, flowmeters are generally non-robust, expensive, and slow in response. In this paper, we have proposed an alternative approach to direct flow measurement for circuits that contain a combination of proportional valves and actuators. A nonlinear state-space representation is used to model the valve orifice area variation with respect to the valve spool position. Kalman Filtering is then utilized to estimate the valve's orifice area in real-time by fusing data from robust low-cost pressure transducers and position sensors. A close agreement is achieved between the estimated and the measured orifice areas for a valve with a complex wedge-shape orifice profile. The orifice area estimate also revealed that the valve spool was not centered at its null (zero) position, which is considered as a flaw in the valve.
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Citation
Zavarehi, M., Sassani, F., and Lawrence, P., "Condition Monitoring of a Hydraulic Valve Through On-Line Estimation of the Valve Orifice Area Profile," SAE Technical Paper 2000-01-2594, 2000, https://doi.org/10.4271/2000-01-2594.Also In
References
- Hogan, P. A. Burrows, C. R. Edge, K. A. Atkinson, R. M. Montakhab, M. R. Woollon, D. J. 1996 “Automated Fault Tree Analysis for Hydraulic Systems,” ASME Journal of Dynamic Systems, Measurement, and Control 118 278 282
- Bull, D. R. Burrows, C. R. Edge, K. A. Hawkins, P. G. Woollons, D. J. 1996 “A Computational Tool for Failure Modes and Effects Analysis of Hydraulic Systems,” Fluid Power Systems and Technology, Proceedings of the 1996 International Mechanical Engineering Congress and Exposition 3 113 118
- Watton, J. Xue, Y. 1995 “Identification of Fluid Power Component Behavior Using Dynamic Flowrate Measurement,” Proceedings of the Institute of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 209 179 191
- Merritt, H. E. 1967 Hydraulic Control Systems John Wiley & Sons Inc. New York
- Khoshzaban, M. Sassani, F. Lawrence, P. D. 1997 “On-Line State and Parameter Estimation of an Electrohydraulic Valve for Intelligent Monitoring,” IEEE/ASME Proceedings of Advanced Intelligent Mechatronics (AIM'97) Tokyo, Japan
- Zavarehi, M. K. Lawrence, P. D. Sassani, F. 1999 “Nonlinear Modeling and Validation of Solenoid-Controlled Pilot-Operated Servovalves,” IEEE/ASME Transactions on Mechatronics 4 324 334
- Zavarehi, M. K. 1997 On-Line Condition Monitoring and Fault Diagnosis in Hydraulic System Components Using Parameter Estimation and Pattern Classification Department of Mechanical Engineering, University of British Columbia Vancouver, BC
- Burton, J. D. Edge, K. A. Burrows, C. R. 1994 “Modeling Requirements for the Parallel Simulation of Hydraulic Systems,” ASME Journal of Dynamic Systems, Measurement, and Control 116 137 145
- McCloy, D. Martin, H.R. 1980 Control of Fluid Power Ellis Harwood Chichester, England
- Dransfield, P. 1981 Hydraulic Control Systems - Design and Analysis of Their Dynamics Springer-Verlag Heilderberg
- Grewal, M. S. Andrews, A. P. 1993 Kalman Filtering: Theory and Practice Prentice Hall Englewood Cliffs, NJ
- Zavarehi, M. K. Sassani, F. Lawrence, P. D. 1998 “On-Line Monitoring a Hydraulic Arm Using Physical Parameter Tracking,” Proceedings of the 2nd International Symposium on Intelligent Automation and Control (ISIAC'98) Anchorage, Alaska May 10-14 117.1 117.8