轿车电磁制动与摩擦制动集成系统的性能试验

Performance experiment of integrated system with car electromagnetic and frictional brakes

利用所研制的电磁制动与摩擦制动集成系统试验台,进行了不同空气间隙、不同最大通电电流、不同电磁制动器线圈匝数以及不同制动盘材料时的集成系统联合制动力矩对比试验,研究了联合制动力矩、电磁制动力矩与摩擦制动力矩三者关系以及各参数对电磁制动与摩擦制动集成系统的影响.结果表明:气隙、电磁线圈通电电流、电磁线圈匝数以及制动盘材料等均对集成系统总制动力矩大小造成影响;综合考虑性能、安装2方面因素,可以选择的参数为气隙2 mm,电磁制动器线圈的最大通电电流为15 A,电磁线圈匝数为820×4,制动盘材料采用铜材质;对于整车总质量超过1 200 kg的车辆,线圈最大通电电流可以增大至25 A.

At the test bench of integrated system with electromagne-tic and frictional brakes, the blend brake torque comparison was conducted with various air gap, maximum supplying current, electromagnet-ic brake coil turns and brake disc material. The relationship among blend brake torque, electromagnetic brake torque and frictional brake torque, and the influence of different parameters on the blend brake torque were investigated. The results show that air gap, supplying current of electromagnetic brake coil, electromagnetic brake coil turns and brake disc material all have influences on the total torque of integrat-ed system. With consideration of two factors of performance and installation, the optimum air gap and maximum supplying current of electromagnetic brake coil are 2 mm and 15 A with electromagnetic brake coil turns of 820 × 4 for copper brake disc. For those vehicles with gross mass more than 1 200 kg, the maximum supplying current of electromagnetic brake coil can be increased to 25 A.