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针对液压作用湿式制动器对机构密封性能要求苛刻及对环境存在污染等问题,建立一种新型电动-气动湿式制动系统,并通过数值建模方法对新制动系统进行理论建模,研究了新型电动-气动湿式制动系统动态混合模型变化规律,并与实际测定参数进行对比分析。分析结果表明,气室气体质量、压力,施力装置速度、位移等参数均随着工况不同存在规律性的增加或减小,此外施力装置速度在运动过程中存在波动现象;由于新型制动系统对工况进行分类,在使用过程中可以根据实际的需要选取不同的工况参数,提高了系统的操作性;通过与试验数据进行对比,理论分析模型计算参数与实测参数具有一致性。
Aiming at the problems that the hydraulic wet brake has strict requirements on the sealing performance of the mechanism and the pollution to the environment, a new electro-pneumatic wet brake system is established and the new brake system is modeled by numerical modeling method. The dynamic mixing model of the electro-pneumatic wet brake system was analyzed and compared with the actual measured parameters. The results show that gas quality, pressure, force and displacement of gas chamber increase or decrease with the increase of working conditions. In addition, the velocity of force applying device fluctuates during the movement. Due to the new system The dynamic system classifies the working conditions. In the process of using, different working condition parameters can be selected according to the actual needs to improve the operability of the system. By comparing with the experimental data, the calculated parameters of the theoretical analysis model are consistent with the measured parameters.