Electrically controlled pressure relief valve

Details Electrically controlled pressure relief valve Electrically controlled pressure relief valve

G - Physics

05

D

G05D 9/00 (2006.01) G05D 11/00 (2006.01)

Patent

CA 2586137

Exemplary control system (200) may include a relief (210), drive electronics and actuator (220) for driving and actuating the (210), and a soft position controller (230) for controlling the position of the (210) using the drive electronics and actuator (220). The (210) may reosive an input hydraulic fluid flow (212) and may provide an output hydraulic (214) based on a position of the (e.g., a position of the piston relative to the orifice). The soft position controller (230) receives a positioning signal (232) based on a target valve position (234) and an actual valve position (236) and generates a valve control signal (238) indicative of a force to move the valve (210) from the adual position to the target valve position. The drive electronics and actuator (220) receive the valve control signal (238) and produce the force output (222) that should produce the target valve position of the valve (210).

La présente invention se rapporte à un système et à un procédé permettant de commander une soupape de surpression à commande électrique, qui font appel à une boucle de commande de position programmable pour commander la position de la soupape. Une soupape de surpression selon l'invention peut également posséder un orifice dont la forme est modifiée, qui permet d'améliorer la stabilité, de répartir uniformément la largeur de bande effective sur la plage de fonctionnement de la soupape, et d'obtenir un mode par défaut accordable.

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