Motors: expansible chamber type – Working member position feedback to motive fluid control – Electrical input and feedback signal means
Patent
1992-08-06
1994-02-15
Michalsky, Gerald A.
Motors: expansible chamber type
Working member position feedback to motive fluid control
Electrical input and feedback signal means
13762564, 13762565, F15B 903, F15B 13044
Patent
active
052857158
ABSTRACT:
An electrohydraulic servovalve including a tailoring circuit coupled to provide a predetermined input signal to the motor of the valve. The predetermined signal functions to control the flow of fluid from the valve to effect a desired result. The electrohydraulic servovalve includes a housing defining round flow ports with a spool valve for metering flow through the ports. The spool valve substantially overlaps the round flow ports. The tailoring circuit includes a plurality of amplifiers each of which has a different gain. A command signal is applied to the amplifier and the output from the amplifiers is summed to provide an input signal to the motor of the electrohydraulic servovalve.
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Cobb Clyde E.
Elrod, Jr. Alvon C.
Heagey Robert C.
Muths Donald C.
Nichols Larry L.
HR Textron Inc.
Michalsky Gerald A.
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