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Dynamic Simulation of a Position-Controlled Electrohydraulic System Using EASY5
Technical Paper
1999-01-2855
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A servovalve - controlled hydraulic motor - driven positioning system was built. The hydraulic system was modeled and simulated using EASY5 software which had predefined hydraulic components models in addition to the ability of defining new ones. EASY5 model made it possible to study the dynamic behavior of the system under varied conditions of entrained air, motor displacement, motor leakage, and mass changes. Different systems components were tested in order to have the required data needed to build the final model. Pump flow rate, motor leakage, servovalve leakage, and slide table friction were experimentally measured. The slide table dynamic model was proposed and the performance data was measured. Eigenvalue sensitivity analysis showed that fluid line between the hydraulic motor and the servovalve is the most influential factor on system stability.
The results showed that using 0.1in3 displacement motor reduced total time although it increased time delay compared with the 0.15in3 and 0.3in3 displacement Motors. On the other hand using shorter conductor reduced the total time compared with the longer lines. Also, increasing tubing length increased the pressure in motor outlet port.
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Authors
Citation
Fadel, M., Krutz, G., Sumali, H., and White, H., "Dynamic Simulation of a Position-Controlled Electrohydraulic System Using EASY5," SAE Technical Paper 1999-01-2855, 1999, https://doi.org/10.4271/1999-01-2855.Also In
References
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- Fadel, M.A , Krutz G. , Morgan M. , and Gibson H. 1998 Design and Test of Accurate Electrohydraulic Positioning System For Engine LASER Measurements Proceedings of 13th. International Congress on Agricultural Engineering Rabat, Morocco 2-6 Feb 3 435 449
- Merritt, H.E. 1967 Hydraulic Control Systems John Wiley & Sons N.Y
- Krutz, G.W. Claar P.W. and Schueller J.K. 1999 Machine Design For Mobile And Industrial Applications 2nd SAE Warrendale, Pa
- Fadel, M.A 1999 Dynamic Behavior of an Electrohydraulic Servo Control System under Several Operating Conditions Purdue University West Lafayette, Indiana