基于温度估测汽车电子机械制动系统(EMB)制动力研究

Temperature estimation of electromechanical brake system based on the study of power system(EMB)

针对汽车电子机械制动系统(EMB)控制机构中制动力传感器测量制动力存在的不足,运用传热学理论和有限元方法,结合实验对刹车片温度场、热性能、热分布规律及冷却过程进行分析,建立了考虑快速制动和冷却过程条件下估测刹车片温度和制动力的模型。根据模型模拟出EMB特性曲线并用实验进行了验证。实验证明建立的模型准确可行。

Aiming at the defects of braking sensor measuring braking force in automobile electro mechanical-brake, using heat transfer theory and finite element method, combining with the test analyzing the brake temperature field, thermal properties and thermal distribution regularity and the cooling process, the paper establishes the model used to estimate pad temperature and brake force under the condition of considering rapid brake and cooling process. According to model, the EMB characteristic curve is simulated and is verified by test. The test shows that the model is accurate and feasible.