轉向盤轉動慣量測試研究

李賽　陳泰吉　鄭忠輝

摘 要：轉向盤是轉向系統的重要組成部分，主要由骨架和發泡構成，高級一些的轉向盤還配有與氣囊模塊配合的安裝卡扣、軟的外表皮、組合開關等，其主要作用是將人的手力傳遞到轉向管柱，最終改變車輛的行駛方向。轉動慣量可以理解為一個物體對于旋轉運動的慣性，其值取決于物體的形狀、質量分布及轉軸的位置，轉向盤的轉動慣量會影響轉向手感、轉向盤固有頻率、路面沖擊對轉向盤的反沖、前輪擺動等，因此需要合理選擇轉向盤的轉動慣量。本文介紹了轉向盤轉動慣量的測試方法，為考核轉向盤轉動慣量是否合格提供支撐。

關鍵詞：轉向盤 轉動慣量 測試

Research on Moment of Inertia Test of Steering Wheel

Li Sai Chen Taiji Zheng Zhonghui

Abstract：The steering wheel is an important part of the steering system. It is mainly composed of a skeleton and foam. The advanced steering wheel is also equipped with an installation buckle that cooperates with the airbag module， a soft outer skin， and a combination switch. Its main function is to transmit the steering column， and finally the driving direction of the vehicle is changed. Moment of inertia can be understood as the inertia of an object with respect to rotational motion. Its value depends on the shape， mass distribution and position of the shaft. The moment of inertia of the steering wheel will affect the steering feel， the natural frequency of the steering wheel， and the reaction of the road impact on the steering wheel. It is necessary to select the moment of inertia of the steering wheel reasonably. This article introduces the test method of the steering wheel moment of inertia to provide support for evaluating whether the steering wheel moment of inertia is qualified.

Key words：steering wheel， moment of inertia， test