本文论述了汽车平顺性随机输入试验时使用人体振动模型作为座椅载荷的必要性。通过人体动态响应试验建立了两自由度人体模型的数学模型,进而介绍了人体动态参数的识别方法和人体模型的设计原则。试验证实,这种人体振动模型完全可以摸拟坐着的人对铅垂振动的动态响应,可以作为汽车平顺性试验和座椅动态响应试验的测试设备。 This article discusses the necessity of using the human body vibration model as the seat load for the car ride comfort random input test. The dynamic model of two-degree-of-freedom human body model is established by human dynamic response test, and then the identification method of human dynamic parameters and the design principle of human body model are introduced. Experiments show that this model of human vibration can fully simulate the dynamic response of the sitting person to the vertical vibration and can be used as the test equipment for the car ride comfort test and the seat dynamic response test.