Stepper motor actuated servovalve

Details Stepper motor actuated servovalve Stepper motor actuated servovalve

1980-03-05

1982-06-08

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

13762564, F15B 13043

Patent

active

043334989

ABSTRACT:
A servovalve of the type wherein changes in two primary control pressures, as determined by a primary stage valve, positions a secondary output control valve. The primary stage valve is in the form of two nozzles which direct fluid jets against opposite sides of a rotatable cylinder such that the back pressures from the two jets, which control the position of the secondary output control valve, can be varied as the cylinder rotates. The cylinder is driven by a stepper motor which, in turn, can be controlled by the output of digital computer apparatus.

REFERENCES:
patent: 3536296 (1970-10-01), Burris
patent: 3919923 (1975-11-01), Haigh
patent: 4145956 (1979-03-01), Rumrill et al.

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