Motors: expansible chamber type – With motive fluid valve – Both inlet and exhaust controlled by motive fluid pressure...
Patent
1974-10-03
1977-06-28
Cohen, Irwin C.
Motors: expansible chamber type
With motive fluid valve
Both inlet and exhaust controlled by motive fluid pressure...
F15B 1110, F15B 13043
Patent
active
040318133
ABSTRACT:
A device for controlling a hydraulic actuator comprises two servo loops having in common a fluid pressure operated main valve and an electrically operated pilot valve for controlling the main valve. One of the servo loops is for flow control and contains a flow transducer for producing an electrical feedback signal responsively to fluid flow to the actuator and a comparator for comparing the flow feedback signal with a first electrical input signal. The other servo loop is for force control and contains pressure transducing means for producing an electrical feedback signal responsively to the pressure drop across the actuator and a second comparator for comparing the force feedback signal with a second electrical input signal.
REFERENCES:
patent: 2909195 (1959-10-01), Keyt
patent: 3125856 (1964-03-01), Brandson et al.
patent: 3354716 (1967-11-01), Wiebe et al.
patent: 3589387 (1971-06-01), Raymond
patent: 3686557 (1972-08-01), Futamura
patent: 3727520 (1973-04-01), McKown et al.
patent: 3732887 (1973-05-01), Hayner
patent: 3741073 (1973-06-01), Garnjost
patent: 3751940 (1973-08-01), Norbeck
patent: 3763746 (1973-10-01), Walters
patent: 3782250 (1974-01-01), Kiszewski
patent: 3870931 (1975-03-01), Myers
patent: 3895287 (1975-07-01), Sun et al.
Hamey Peter Michael
Hammond John Anthony Gordon
Lindon Thomas Derek
Walters Ronald Bernard
Cohen Irwin C.
Sperry Rand Limited
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