Electrohydraulic proportional actuator apparatus

Details Electrohydraulic proportional actuator apparatus Electrohydraulic proportional actuator apparatus

1975-05-12

1977-08-30

Maslousky, Paul E.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

91375R, 91459, F15B 910, F15B 13044

Patent

active

040446522

ABSTRACT:
An electrohydraulic proportional actuator for converting an electrical input signal to proportional mechanical output. Fluid power may be derived from pressurized fuel or lubricating oil of an associated engine. The actuator may be used to drive any engine function requiring modulated control. The mechanical output is proportional to the electrical input. The actuator includes mechanical feedback to linearize the response function, thus eliminating the need for closed loop operation of the system in which the actuator is used. Both linear and rotary actuators are disclosed in various embodiments. Each type is capable of operation with either a proportional solenoid and valve or a force rebalance solenoid and valve.

REFERENCES:
patent: 2789543 (1957-04-01), Popowsky
patent: 2966891 (1961-01-01), Williams
patent: 3087470 (1963-04-01), Beard et al.
patent: 3185439 (1965-05-01), Inaba et al.
patent: 3306170 (1967-02-01), Kreuter
patent: 3739813 (1973-06-01), Worden

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