车辆制动系统需液量仿真分析

需液量是制动系统关键性设计参数,目前关于制动系统需液量的研究缺乏理论和仿真依据。通过解析车辆制动系统的结构和工作原理，推导需液量关于制动液压强的数学公式，并基于AMESim的设计探索工具，搭建可自寻优的需液量仿真模型。根据实测数据寻找制动系统仿真模型的最优参数拟合值，并利用自寻优出的模型对制动系统需液量的影响因素进行仿真分析。结果表明，该模型可根据目标需液量反向推导出制动系统的关键设计参数，并用以模拟制动系统的需液量分析，为制动系统的设计和故障诊断提供参考依据。

Simulation Analysis for Required Fluid Amount of Automobile Brake System

The required fluid amount is a key design parameter for brake system. At present, there is a lack of theoretical and simulation bases for the research on required fluid amount. By the analysis of automobile brake system structure and work principle, a hydraulic pressure mathematical formula for required fluid amount is derived. And a self optimization simulation model is built by the design exploration tool of AMESim. According to the measured data, we find the optimal parameter of brake system simulation model. Then the influence factors of required fluid amount for brake system are analyzed by the self optimization model. The results show that through the modified model, we can deduce the key design parameters of brake system according to the target required fluid amount. It is used to simulate the required fluid amount of brake system and provide a basis for design and fault diagnosis of brake system.