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A Novel Method of Controlling a Hydraulic Actuator with Four Valve Independent Metering Using Load Feedback
Technical Paper
2005-01-3639
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A revolution in mobile hydraulic equipment is occurring. Conventional hydraulic spool valves with hydromechanical pressure compensators are being replaced by valve assemblies with four valve independent metering with electronically-controlled pressure compensation. In the system described here, two of the four independent valves are active during metering. This new topology offers significant advantages due to the two degrees of freedom provided.
In this paper, the theory behind a new method of flow control based upon load feedback is presented for two of the five distinct metering modes. In addition, a new algorithm for setting the supply pressure is presented which is also based upon load feedback.
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Citation
Tabor, K., "A Novel Method of Controlling a Hydraulic Actuator with Four Valve Independent Metering Using Load Feedback," SAE Technical Paper 2005-01-3639, 2005, https://doi.org/10.4271/2005-01-3639.Also In
Simulation and Optimization: System Level, Component Level, Advanced Technology/Methodology
Number: SP-1989; Published: 2005-11-01
Number: SP-1989; Published: 2005-11-01
References
- Jansson, A. et al. Separate Controls of Meter-in and Meter-out Orifices in Mobile Hydraulic Systems SAE Technical Papers Series Sep. 1989 1 7 SAE International Warrendale, PA
- Pfaff, J. Tabor, K. 2004 Velocity Based Electronic Control System for Operating Hydraulic Equipment May
- Pfaff, J. Tabor, K. 2005 Method of Selecting a Hydraulic Metering Mode for a Function of a Velocity Based Control System April
- Pfaff, J. Tabor, K. 2004 Method of Sharing Flow of Fluid Among Multiple Hydraulic Functions in a Velocity Based Control System August
- Tabor, K. 2004 Velocity Based Method for Controlling A Hydraulic System April
- Tabor, K. 2004 Velocity Based Method of Controlling an Electrohydraulic Proportional Control Valve August
- Yang, X. et. al. 2001 Bidirectional Pilot Operated Control Valve December
- Tabor, K. 2005 Optimal Velocity Control and Cavitation Prevention of a Hydraulic Actuator Using Four Valve Independent Metering Nov.