关键词: 高速开关电磁阀, 位置控制, 液压缸

Abstract: A new control method applied to adjust clutch's displacement minutely is put forward. While controlling the clutch position of AMT (Automated mechanical transmission) vehicle, it's necessary to make clutch disengage or engage for a certain precise displacement, so as to meet the requirement of vehicle' s start, especially start on a slope or start with ASR (Anti-slip regulation). Hydraulic cylinder is always adopted as the perform institution of AMT vehicle's clutch. But its motion presented to be subjected to many factors in reality, such as the change of oil' s viscosity and trie restoring force of spring, etc, which bring difficulty to its control. Using the new method put forward here, can the self-adaptation to temperature change be achieved, and the cylinder' s inconsistent load is taken into consideration. It is proved that the error of clutch' s position control is within ±0,06 mm and this method has great ability of fault tolerance.

Key words: Hydraulic cylinder Position control High speed switch electromagnetic valve