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System Modelling and Analysis on Stability of Electro-Hydraulic Pressure Regulating System for Shift Actuator including an Accumulator

机译：换档致动器电液压调节系统稳定性的系统建模与分析，包括蓄能器

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The shift actuator of wet clutch adopt an electro-hydraulic pressure regulating system (EHPRS), which play a critical role to shifting quality. Related research shows that the accumulator can improve the stability of output pressure for EHPRS, but its working mechanism and influence law are not clear yet. In this paper, a spring-type accumulator that connected in parallel in the control chamber of EHPRS is studied and analyzed. Firstly, the system mechanism is analyzed; then, the mathematical model and simulation model of system are established; finally, based on the simulation model, the dynamic characteristics of system are analyzed, and the influence of accumulator on the stability performance is revealed. The results show that under the same conditions, the accumulator can significantly reduce the overshoot of output pressure and shorten the stabilization time of output pressure, without affecting the pressure build-up time of output pressure. At the same time, with the increase of accumulator orifice and spring stiffness, the stability of system is significantly improved. It provides reference value for system design.
机译：湿离合器的换档致动器采用电液压调节系统（EHPRS），其在换档质量方面发挥着关键作用。相关研究表明，蓄能器可以提高EHPRS输出压力的稳定性，但其工作机制和影响法尚不清楚。在本文中，研究并分析了在EHPRS控制室中并联连接的弹簧型蓄积器。首先，分析系统机制;然后，建立了系统的数学模型和仿真模型;最后，基于仿真模型，分析了系统的动态特性，揭示了蓄能器对稳定性性能的影响。结果表明，在相同的条件下，蓄能器可以显着降低输出压力的过冲并缩短输出压力的稳定时间，而不会影响输出压力的压力积累时间。同时，随着蓄能器孔口的增加和弹簧刚度，系统的稳定性显着提高。它为系统设计提供了参考值。

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