关键词: 盲源分离；商用车；驾驶室悬置；隔振特性；ADAMS；参数优化

Abstract: Taking the vibration isolation characteristics of the cab mounting system of a commercial vehicle as the research object, this paper studied the blind source separation method of the road spectrum vibration signal of the whole commercial vehicle, identified the excitation vibration source characteristic information of the cab under various road conditions and vehicle speeds, and combined the vibration mode analysis of the cab mounting system. The response law between the vibration source excitation and each mode of the cab mounting system and the vibration isolation characteristics of the cab mounting system were proved, which provided a theoretical basis for the parameter optimization of the mounting system and the improvement of the seat. The cab mounting system model and the vehicle multi-body dynamics model were established through ADAMS software. The cab vibration response and the vibration isolation characteristics of the mounting system under the vehicle environment were simulated. The technical parameters of the mounting system were optimized and matched, and the best vibration isolation technical parameters of the cab mounting system were obtained.

Key words: Blind source separation; Commercial vehicles; Cab mount; Vibration isolation characteristics; ADAMS; Parameter optimization