电子机械制动夹钳的设计及其试验研究

Design and experimental research of electronic mechanical brake clamp

针对有轨电车制动系统的需求特性,对电子机械制动(EMB)夹钳进行了研究,提出了一种EMB夹钳设计方案。首先,通过对夹钳的功能需求进行分析,确定了电子机械制动夹钳的技术参数,提出了电子机械制动夹钳的工作原理;然后,采用数学建模的计算方法,确定了制动夹钳的电机、传动机构的关键设计参数,采用联合仿真的方法分析了电子机械制动夹钳的性能参数;最后,通过样机性能测试和环境适应性试验,对电子机械制动夹钳的设计方案进行了验证。研究结果表明:电子机械制动夹钳的响应时间小于300 ms,系统稳态误差为±0.5 kN,超调量小于1.4 kN,最大输出力达到28 kN,1 Hz正弦波跟随拟合度较好;具有输出力施加和缓解、停放制动、磨耗间隙自补偿及人工辅助缓解功能;各项功能和性能参数可满足车辆使用需求,具备工程化应用的条件。

Aiming at the brake system function requirements of tram,the electronic mechanical brake(EMB)clamps was studied,and a design scheme of EMB clamp was proposed.Firstly,the analysis of the functional requirements of the clamp was studied,and the technical parameters of the electronic mechanical brake clamp were determined,and the working principle of the electronic mechanical brake clamp was proposed.Then,the mathematical model was established to determine the design parameters of the motor and transmission mechanism;the integrated simulation method was used to analyze the performance parameters of electronic mechanical brake clamp.Finally,the performance of the electronic mechanical brake clamp was verified through the prototype performance test and environmental adaptability test.The test results show that the response time of electronic mechanical brake clamp is less than 300 ms,the system steady-state error is±0.5 kN,the overshoot is less than 1.4 kN,the maximum output force reaches 28 kN,and the fitting degree of 1 Hz sine wave following is good.The electronic mechanical brake clamp has the functions of output force application and release,parking braking,wear clearance self compensation and manual auxiliary release.The function and performance parameters of the electronic mechanical brake clamp meet the requirements of tram,and the engineering application conditions are available.