Control device for a hydrostatic drive for at least two actuator

Details Control device for a hydrostatic drive for at least two actuator Control device for a hydrostatic drive for at least two actuator

1988-01-22

1989-10-03

Garrett, Robert E.

Power plants

Pressure fluid source and motor

Having condition responsive control in a system of distinct...

60427, 60445, F16D 3102

Patent

active

048708194

ABSTRACT:
A control device for a hydrostatic drive for at least two actuators, having a variable displacement pump whose adjusting device is acted on in accordance with the displacement and/or the flow pressure, wherein each actuator has associated with it, in its hydraulic supply line, a control valve and a preceding displacement controller in the form of a pressure compensator, is simplified while ensuring accurate control. This is achieved by associating with the control device an electronic regulating device which, depending on a measuring element that detects the opening position of the pressure compensator, controls, by means of an adjusting member associated with the adjusting device, the displacement setting of the pump, increasing it as the opening of the pressure compensator(s) becomes larger and decreasing as the opening becomes smaller.

REFERENCES:
patent: 3579987 (1971-05-01), Busse
patent: 3914939 (1975-10-01), Purdy
patent: 3991571 (1976-11-01), Johnson
patent: 4137716 (1979-02-01), Budzich

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