Circuit arrangement for a hydraulic drive in a position control

Details Circuit arrangement for a hydraulic drive in a position control Circuit arrangement for a hydraulic drive in a position control

1989-03-06

1990-05-15

Chambers, A. Michael

Motors: expansible chamber type

Working member position feedback to motive fluid control

Electrical input and feedback signal means

F13B 903

Patent

active

049247549

ABSTRACT:
For path control of a plurality of drives, i.e. for driving a plurality of drives in different axes in geometrical path dependence, to obtain high accuracy it is necessary for the lag error of the drives to remain constant. According to the invention for this purpose a circuit arrangement is proposed in a cascade structure in which from the speed of each individual path drive and the control deviation determined from the actual value and desired value of the position a difference signal is formed which is integrated and added to the output signal of a P controller.

REFERENCES:
patent: 2984214 (1961-05-01), Wysocki
patent: 4218956 (1980-08-01), Uno et al.

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