Study on Static and Dynamic Characteristics of Load-Sensing and Pressure-Compensated Directional Control Valve

Abstract:

This study presents the static and dynamic characteristics of load-sensing and pressure-compensated directional control valve under the working conditions. A mathematical model is developed, two types of working conditions are presented through the static work point calculation. The static characteristic is analyzed by simulation, and the conclusion is validated by experiments. Solution procedure of the flow gain transfer function and flow-pressure coefficient transfer function is detailed introduced based on the above static computation, and their dynamic characteristic is analyzed by using Bode diagram. Finally, three types of compensatory modes are proposed, which provides very useful value and significance for the hydraulic component or system design and parameters optimization.

• Periodical: Advanced Materials Research (Volumes 753-755)
• Pages: 2693-2699
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.753-755.2693
• Online since: August 2013
• Authors: Rui Lin Feng, Jian Hua Wei, Jin Hui Fang
• Keywords: Directional Control Valve, Dynamic Performance, Hydraulic Fluid Power, Load-Sensing, Pressure-Compensated

References

[1] Luo Y.L., Bai Y.Z., Bai Hua. Analysis of Multiple Unit Valve Outlet Pressure Compensation Valve s Flow-pressure Characteristics. Hydraulics Pneumatics & Seals, 2011, 9, p.67.

[2] Yang H.Y., Cao Jian, and Xu Bing. Progress in the Evolution of Directional Control Valves and Future Trends. Chinese Journal of Mechanical Engineering, 2005, 41(10), p.1.

DOI: 10.3901/jme.2005.10.001

[3] Ina Ioana Costin. Load sensing directiona hydraulic valve. USA. Invention Patent. US2008/0099086 A1. (2009).

[4] Lantto B, Palmberg J. O, Kurs P. Static and dynamic performance of mobile load-sensing systems with two different types of pressure-compensated valves. SAE technical paper series. 1990, p.251.

DOI: 10.4271/901552

[5] Pettersson H, Krus P, Jansson A. Design of pressure compensators for load sensing hydraulic systems. UKACC International Conference on Control, University of Exeter, UK. 1996, p.1456.

DOI: 10.1049/cp:19960766

[6] Cheng Minter. Modeling and analysis of a pressure compensated flow control valve. Proceedings of 2005 ASME Fluids Engineering Division Summer Meeting, Houston, 2005, p.1036.

[7] Salloom, MY, Samad, Z. Magneto-rheological directional control valve. International journal of advanced manufacturing technology, 2012, 58(4), p.279.

DOI: 10.1007/s00170-011-3377-4

[8] Salloom, MY, Samad, Z. Design and modeling magnetorheological directional control valve. Journal of intelligent material systems and structures, 2011, 23(2), p.155.

DOI: 10.1177/1045389x11432654