JET-PNEUMATIC PROPORTIONAL-INTEGRAL (PI) CONTROLLER Russian patent published in 2022 - IPC G05B11/50 

FIELD: instrumentation.

SUBSTANCE: invention relates to pneumatic controllers. A jet-pneumatic proportional-integral controller is a proportional controller, in the positive feedback of which a consumable integral link is located, and the P-controller consists of a sensitive element: a plate suspended on a gas support, an input differential jet circuit, a reading element in the form of a “nozzle-flap” type node covered by two compensating nozzles, located before and after a pneumatic membrane power amplifier forming a regenerative feedback with a gain greater than one; the integral link includes a variable resistance that changes the integration time constant, a constant volume located in parallel, and an accurate membrane repeater connected to a positive feedback nozzle.

EFFECT: increase in the accuracy of regulation.

1 cl, 1 dwg