METHOD TO CONTROL OUTPUT PRESSURE OF PUMPING STATION WORKING LIQUID, STABILIZATION OF SAID PRESSURE, AND PUMPING STATION FOR IMPLANTING THE METHOD Russian patent published in 2005 - IPC

FIELD: hydraulic engineering; hydraulic supply sources.

SUBSTANCE: according to proposed method, obtained difference signal is first amplified with gain factor k₀ and then is simultaneously passed along two channel with subsequent summing up of signals passed over channels. Signal in first channel is amplified with factor corresponding to coefficient of compressibility of working liquid, and in second channel, signal is first amplified with first variable gain factor k_var.1 is then multiplied by second variable gain factor k_var.2 and then is integrated. Summary signal is simultaneously fed as working liquid flow rate control signal into second channel as second variable gain factor.

EFFECT: improved accuracy and stability of control system, increased range of flow rate control, improved reliability, increased service life of pumping station, reduce heating of working liquid.

5 cl, 5 dwg