Control device for a hydraulic slide valve

Details Control device for a hydraulic slide valve Control device for a hydraulic slide valve

1995-06-15

1997-03-18

Larson, James

Valves and valve actuation

Electrically actuated valve

Remote or follow-up control system for electrical actuator

25112912, 91433, F16K 3104

Patent

active

056115180

ABSTRACT:
A device for the control of a hydraulic slide valve. The hydraulic valve being put into motion by a motor and by a draw-back spring, the device including structure for controlling the rotational direction of the motor as a function of its positional error, the control structure being, in turn, controlled by a signal given by a correction circuit, the transfer function (K(s)) of which corrects a jet effect that is exerted on the slide valve. The device has application to hydraulic systems requiring large passbands.

REFERENCES:
patent: 4142489 (1979-03-01), Menard
patent: 4250846 (1981-02-01), Menard
patent: 4313414 (1982-02-01), Planteline
patent: 4352345 (1982-10-01), Menard et al.
patent: 4439716 (1984-03-01), Minnich
patent: 4451769 (1984-05-01), Minnich
patent: 4526342 (1985-07-01), Wakefield
patent: 4748957 (1988-06-01), Menard et al.
patent: 4845416 (1989-07-01), Scholl et al.
patent: 5012722 (1991-05-01), McCormick
patent: 5302009 (1994-04-01), Menard
patent: 5438909 (1995-08-01), Menard

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