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This paper investigates the problem of finite frequency fuzzy H∞ control for uncertain active vehicle suspension systems,in which sensor failure is taken into account.TakagiSugeno (T-S) fuzzy model is established for considered suspension systems.In order to describe the sensor fault effectively,a corresponding model is introduced.A vital performance index,H∞ performance,is utilized to measure the drive comfort.In the framework of Kalman-Yakubovich-Popov theory,the H∞ norm from extal perturbation to controlled output is optimized effectively in the frequency domain of 4Hz-8Hz to enhance ride comfort level.Meanwhile,three suspension constrained requirements,i.e.,ride comfort level,manipulation stability,suspension deflection are also guaranteed.Furthermore,sufficient conditions are developed to design a fuzzy controller to guarantee the desired performance of active suspension systems.Finally,the proposed control scheme is applied to a quarter-vehicle active suspension,and simulation results are given to illustrate the effectiveness of the proposed approach.