本文拟通过应用实例,介绍国标《客车平顺性评价指标及限值》(以下简称《指标及限值》)贯彻和执行过程中遇到的三个关键问题。一、三个评价指标的相互关系、计算方法和查图方法国标《指标及限值》规定使用三个评价指标:加速度加权均方根值σ_w(m/s~2);等效均值 L_(eq)(dB);降低舒适界限 T_(CD)(h)。三者具有一定的相互关系,故任知其一即可知其余二。加速度加权均方根值σ_w 是1～80Hz 频率范围内,考虑振动对人体健康影响的计权方法的振动强度。σ_w 是1～80Hz 范围内20个1/3倍频带加速度加权均方根分量σ_(wi)的 This article intends to introduce three key issues encountered in the implementation and implementation of the national standard “Passenger Car Ride Evaluation Index and Limits” (hereinafter referred to as “Indicators and Limits”) through application examples. One, three interrelationship between evaluation indicators, calculation methods and the chart method GB “indicators and limits” provides the use of three evaluation indicators: acceleration weighted root mean square σ_w (m / s ~ 2); equivalent mean L_ ( eq) (dB); reduce comfort threshold T_ (CD) (h). The three have a certain relationship with each other, so you know the other two. The weighted average square root of acceleration σ_w is the vibration intensity of the weighting method considering the influence of vibration on human health in the frequency range of 1 ~ 80Hz. σ_w is the weighted average of the root-mean-squared components σ_ (wi) of 20 1/3 third bands in the range of 1 to 80 Hz