Method and apparatus for controlling a hydraulic motor

Details Method and apparatus for controlling a hydraulic motor Method and apparatus for controlling a hydraulic motor

2005-02-01

2005-02-01

Lazo, Thomas E. (Department: 3745)

Power plants

Pressure fluid source and motor

Condition responsive control of pump or motor displacement

C060S452000

Reexamination Certificate

active

06848254

ABSTRACT:
A method and apparatus for controlling the motor output speed of a variable displacement hydraulic motor are disclosed. The method may include determining a value indicative of a motor output speed, determining a value indicative of a desired motor output speed, determining a desired position of a control valve using a nonlinear feedback control law, and, controlling the motor output speed as a function of the control valve position, wherein the nonlinear feedback control creates a first order system response.

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Article written by T. Nishiumi & J. Watton of Cardiff School of Engineering, University of Wales, Cardiff: Model Refere, 1997.

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