汽车ESP液压控制单元关键部件建模与系统仿真

Critical Component Modeling and System Simulation of Hydraulic Control Unit of Automotive Electronic Stability Program

摘要:

以汽车电子稳定性程序（ESP）液压控制单元的回油泵、高速开关阀等关键部件为研究对象，推导其数学模型，利用AMESim、Matlab软件建立ESP液压系统回油泵、高速开关阀运动的联合仿真模型，通过仿真得出这些液压元件参数对主动增压下制动轮缸压力调节的影响，为提高回油泵效率、实现高速开关阀的线性控制功能提供参考依据。

Abstract:

Taking the piston pump and high speed on-off valve, the crucial parts of automotive electronic stability program (ESP). Their mathematical models were established. Besides, the co-simulation model of ESP hydraulic control unit (HCU) was built up by AMESim and Matlab, which was also verified by test. The simulation model described the motion intrinsic characteristic of the piston pump and high speed on-off valve. Consequently, the effect of those components’ parameters on the adjustment of braking pressure during active boosting was analyzed. The result can provide references for the design and development of ESP, especially for improving the efficiency of the pump and the linear control performance of the high speed on-off valve. 