关键词: 磁流变座椅, 惯容器, 基于模型的控制, 自由搜索算法

Abstract:

Dual-layer vibration isolation has good vibration attenuation effect, but its application in vehicle aggravates the vehicle load additionally. To solve this problem, this paper replaces the intermediate mass of dual-layer vibration isolation with Inerter, and further applies it into vehicle seat suspension. This paper first proposed a new seat suspension structure including magneto-rheological damper and Inerter, and derived the seat-human body motion differential equations. Based on these equations this paper presented a model-based (based on seat suspension dynamics model) control scheme, established the corresponding Simulink model, and optimized the parameters of both the seat structure and its controller with the Free-Search (FS) algorithm. This paper further completed the simulation tests using a compound excitation of three frequencies where the driver is easy to resonate，as well as a random excitation. These tests show that the proposed seat structure and controller parameters have better vibration attenuation effect.

Key words: Magnetorheological seat, Inerter, model based control, free-search algorithm