System for regulating piston in cylinder for vehicle automatic gearbox or clutch, has operating and working chambers connected to piezoelectric actuators on operating and working sides for filling and/or removing working medium

摘要

The system regulates a piston (12) to a desired position in a cylinder (10) with at least one control cylinder (21) with operating (22) and working (23) chambers. The operating chamber is connected to an operating side piezoelectric actuator (26) for filling and/or removing working medium and the working chamber is connected to at least one working side piezoelectric actuator (29) for filling and/or removing working medium. Independent claims are also included for the following: a method of regulating a piston in a cylinder.