Electronic compensator for a pneumatic servo controlled load bea

Details Electronic compensator for a pneumatic servo controlled load bea Electronic compensator for a pneumatic servo controlled load bea

1979-08-24

1981-07-21

Maslousky, Paul E.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Electrical input and feedback signal means

91433, F15B 1316, F15B 1110

Patent

active

042791928

ABSTRACT:
An electronic compensation circuit for a pneumatic load bearing bellows system closed on position, in which a servo valve provides pressure to the bellows to actuate the top of the bellows to move to a predetermined position in response to a control signal. The compensation circuit (42) cancels at least one load-variable system characteristic which, if not cancelled would cause system instability at system gain levels which are necessary for desired system response. The compensation circuit electronically provides a replacement system characteristic which permits the system to be operated at a gain level substantially higher than the gain level at which the uncompensated system goes unstable.

REFERENCES:
patent: 3464318 (1969-09-01), Thayer et al.
patent: 4164167 (1979-08-01), Imai et al.

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