Design of Electrohydraulic Force Loading System 941798
This paper discusses the design of an electrohydraulic force loading system. This system is able to produce any desired arbitrary forces. As an example, the loading system is designed to load force to a hydraulic position servo. It is shown that if the loading system is designed by using a combination of a servo valve with critical center and a hydraulic cylinder to realize a force feedback close-loop system, the position system may generate a large additional force to frustrate this loading system to work properly. By using a bypass adjustable throttle valve across the two flow lines of the loading cylinder, it is verified by theoretic analysis and simulation that the additional force generated by position system can be greatly reduced. Because an asymmetric cylinder is used as the loading actuator, modelling of its characteristics is also carried out.
Citation: LeQuoc, S., Xiong, Y., Cheng, R., and Zhang, H., "Design of Electrohydraulic Force Loading System," SAE Technical Paper 941798, 1994, https://doi.org/10.4271/941798. Download Citation
Author(s):
S. LeQuoc, Y. F. Xiong, R. M. H. Cheng, H. Q. Zhang
Affiliated:
Ecole de Technologie Supérieure, Concordia Univ.
Pages: 11
Event:
International Off-Highway & Powerplant Congress & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1994 Transactions: Journal of Commercial Vehicles-V103-2
Related Topics:
Engine cylinders
Throttles
Electrohydraulics
Simulation and modeling
Valves
Sensors and actuators
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