【摘要】 针对汽车防抱死刹车系统(ABS)在传统路试及台架测试过程中无法快速改变轮胎与路面间摩擦系数的问题,结合ABS控制算法的特点提出一种能够模拟不同路况组合的汽车ABS动态性能台架测试方法。利用4组飞轮在旋转时所具有的转动动能来等效实际被测车辆在此速度下的平动动能,确定转动惯量模拟方法。通过磁粉离合器主、从动轴之间的滑差实现轮胎与路面间摩擦系数的模拟。分析结果表明,测试系统能够完成单一附着系数路面、对开附着系数路面及对接附着系数路面的测试。测试系统能够对ABS控制逻辑中路面识别能力及其动态响应性能做出评价。更多还原

【Abstract】 For the problem that friction coefficient could not change fast between tire and road surface during the process of traditional road test and bench test of anti-lock braking system,a bench test method of automobile braking performance was brought forward according to the characteristics of the ABS control algorithm.The translational kinetic energy of vehicle was replaced by the rotational kinetic energy of flywheels which could determine the rotation inertia simulation method.The adhesion coefficient between tire and road surface could be realized by the slip between master-slave shafts of the magnetic powder clutch.Analysis results show that the test system can realize single adhesive coefficient road surface,reciprocal adhesive coefficient road surface and docking adhesive coefficient road surface.The test system can make performance evaluation to road condition recognition ability and dynamic response.更多还原