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针对旅客列车发生纵向冲动时的判断标准缺乏统一性,进行了列车的纵向动力学分析以及人体敏感度分析。运用数字信号处理和虚拟仪器技术对采样数据进行了分析统计,归纳出了纵向冲动产生时的普遍性规律,并在研究的基础上提出了以加速度、频率和作用时间为依据的新的纵向冲动判断准则。实验表明,与传统舒适度标准相比,运用该准则进行人体的纵向舒适度判断更为合理与准确。
In view of the lack of uniformity in the judgment criteria of longitudinal impulses on passenger trains, the longitudinal dynamic analysis of trains and the analysis of human sensitivity are carried out. By using digital signal processing and virtual instrument technology, the sampling data are analyzed and statisticed, and the general law of vertical impulse generation is summarized. Based on the research, a new longitudinal impulse based on acceleration, frequency and acting time is proposed Judgment criteria. Experiments show that, compared with the traditional comfort standards, the use of the guidelines to judge the human body’s longitudinal comfort is more reasonable and accurate.