近年來車輛的舒適性受到相當程度的重視，因此對於車輛振動改善的要求也日益提高。本研究計畫主要應用可調式避振阻尼器建立1/4 車模組達到半主動式控制之懸吊系統。在第一部份主要針對不同路況量測可調式避振阻尼器之性能特徵並且建立資料庫用以提供設計控制器參數模擬之參考。從實驗結果也指出經過PID 與模糊邏輯控制器設計的懸吊系統有效的抑制令人感受不愉快的振動產生，並且透過ISO 國際摽準所提供全身受振之分析與評價做為舒適性評估之依據。 A semi-active vehicle suspension system using an adjustable shock absorber for a quarter-car model vibration control is presented. In the preliminary work, the characteristics and performance of an adjustable shock absorber are measured for building a data bank for various road conditions. The experimental results indicated that both the PID controller and the fuzzy controller could effectively suppress the vibration of the proposed quarter-car model. The comparison and analysis of the proposed controllers are also described in this paper. Furthermore, the characteristic analysis and evaluation of human exposure to whole body vibration (WBV) has also been established by international standards.