噪声与振动控制2018，Vol.38Issue(z1)：326-329,4.DOI:10.3969/j.issn.1006-1355.2018.Z1.069
考虑控制时滞的主动悬架离散系统最优控制
Optimal Control of Active Suspension Discrete Systems with Control Delay
摘要
Abstract
The active suspension is essentially a discrete control system with time delay. For the one-fourth vehicle active suspension system model, considering that the time delay is not necessarily the integer multiples of the sample time, a general description model of time delay is adopted. The active suspension continuous system with time-delay is discretized. The actuator input is translated into parts of the state variables to extend the system state variables, and then the extended state space model of the active suspension discrete systems with time delay is established. The optimal controller of the active suspension discrete system is designed by selecting suspension dynamic travel, wheel dynamic load, vertical acceleration and actuator energy consumption as the optimization objectives. Finally, as an example, the simulation model based on MATLAB/SIMULINK software is established to analyze the response characteristics of the active suspension discrete control system with time-delay to the random white noise pavement and step input. The results show that the optimal control of the active suspension system has quick response and great control effect. The control delay has obvious influence on the active suspension discrete system. And the extent of influence is related to the sampling time.关键词
振动与波/主动悬架/时滞/离散系统/最优控制Key words
vibration and wave/active suspension/time delay/discrete system/optimal control分类
交通工程引用本文复制引用
高小林,曹青松..考虑控制时滞的主动悬架离散系统最优控制[J].噪声与振动控制,2018,38(z1):326-329,4.基金项目
国家自然科学基金资助项目(51765021) （51765021）
江西省重大自然科学基金资助项目(20152ACB21020) （20152ACB21020）
江西省教育厅科学技术研究资助项目(GJJ161133). （GJJ161133）
