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Modeling and control of two stage twin spool servo-valve for energy-saving

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2 Author(s)
QingHui Yuan ; Dept. of Mech. Eng., Minnesota Univ., Minneapolis, MN, USA ; Lew, J.Y.

A control strategy of two stage twin spool servovalves in the load-sensing mobile applications is presented. The twin spool valve differs from the conventional valve in that it provides the ability to control flow into and out of valves independently. In this paper, the nonlinear valve model and a control scheme for a two stage twin spool servo-valve are developed featuring energy saving. The multiple sliding surface mode control method is then utilized to accomplish the motion control while regulating back pressure. The simulation verifies that the proposed control scheme for the twin spool valve, can offer the more significant energy-saving even with load-sensing pump application than the traditional proportional valves.

Published in:

American Control Conference, 2005. Proceedings of the 2005

Date of Conference:

8-10 June 2005

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