摘要
在轨道车辆实车动态测试中,运行舒适性指标对车辆性能评估至关重要。ISO 2631舒适性指标是针对人体振动舒适性分析而建立的标准,但在测试城市轨道交通车辆运行舒适性时,ISO 2631没有对数据采集和计算参数进行明确规定。分析了时域滤波器的设计方法,研究了采样频率和计算窗口时长对舒适性指标计算结果的影响。基于城市轨道交通车辆运行实测数据分析了不同状态下座椅的舒适性指标的特征。研究结果表明:计算窗口时长取值为8~10 s较为合适,采样频率取值为512 Hz,座椅载重舒适性测试结果更接近载客时的真实情况。
In the performance test of rail vehicles,ride comfort index is critical to vehicle performance assessment.Ride comfort index in ISO 2631 is a standard established for analyzing human vibration comfort.However,for testing urban rail transit vehicle ride comfort index,data collection requirements and calculation parameters are not clearly defined in ISO 2631.Design method of time domain filter is analyzed,and the influence of sampling frequency and calculation window length on the comfort index calculation results are studied.Based on the field data during urban rail transit vehicle operation,characteristics of the comfort index of seats in different states are analyzed.Research results show that the calculation window length shall be 8 to 10 seconds,and the sampling frequency shall be 512 Hz,and comfort test results turn out closer to the actual situation when seats are under load.
作者
韦海菊
解建坤
WEI Haiju;XIE Jiankun(CRRC Nanjing Puzhen Co.,Ltd.,210031,Nanjing,China)
出处
《城市轨道交通研究》
北大核心
2021年第9期178-181,共4页
Urban Mass Transit
基金
南京工程学院科研创新基金面上项目(CKJB201311)。
