A Study on Half-Vehicle Active Suspension Control Using Sampled-Data Control
作者单位：School of Creative TechnologiesUniversity of Portsmouth
会议名称：《2011 Chinese Control and Decision Conference（CCDC）》
会议日期：2011年
学科分类：08[工学] 0802[工学-机械工程] 080201[工学-机械制造及其自动化]
基 金：supported by a joint PhD scholarship of Portsmouth University and Protean Electric Ltd
关 键 词：A half-car model Active suspension system H∞ control Sampled-data control.
摘 要：This paper is concerned with the problem of sampled-data H∞ control for a half-car active suspension system.First of all,by regarding the heave and the pitch accelerations,and the suspension defiection as the optimization objectives,the vehicle suspension system will be established.Then,an input delay approach is employed to transform the resulting active vehicle suspension system with sampling measurements into a continuous-time system with a delay in the state.Thirdly,by constructing a novel Lyapunov functional,a sufficient condition for the existence of sampled-data H∞ controller is given to ensure asymptotical stability of the closed-loop system and also satisfy the constraint performance.The corresponding condition can be converted into a convex optimization problem and verified easily by means of standard software.Finally,a design example is exploited to demonstrate the effectiveness of the proposed design method.