摘要
随着近年国家对环境保护和节能减排提出了更高的要求,有着能耗低和效率高等特点的混合动力汽车逐渐成为主流研究方向,也成为汽车行业的发展趋势。其中悬架系统是混合动力汽车整车系统中一个重要组成部分,为了车辆的行驶平稳、乘坐舒适和操作稳定,研究悬架系统成为重要一环。本文以混合动力汽车1/4悬架系统为研究对象,模拟路面激励,建立二自由度的半主动悬架的动力学建模,通过MATLAB列数学状态方程和最优控制算法,计算出最优的阻尼系数,并在预判时间内改变悬架阻尼系数,实现混合动力汽车平顺性的大幅提升。通过Simulink软件仿真,对比被动悬架,验证最优控制算法的有效性,最终探究预见最优控制在半主动悬架中的实际应用价值。
As in recent years, the state of the environment protection and energy-saving and emission reduction put forward higher requirements, with low energy consumption and high efficiency characteristics of hybrid electric vehicle （HEV） has gradually become mainstream research direction, is becoming the development trend of the automotive industry. Suspension system is one of the important components in the hybrid vehicle system, which is an important part of the suspension system to study the suspension system in order to smooth ride, ride comfort and operation stability. The hybrid quarter car suspension system as the research object, simulation of road excitation, dynamic modeling of a two degree of freedom semi-active suspension is established, through the MATLAB column mathematical state equation and optimal control algorithm calculated the optimal damping coefficient, and in anticipation time changing the suspension damping coefficient, hybrid car ride of increased dramatically. Through the Simulink software simulation, compared with the passive suspension, verify the effectiveness of the optimal control algorithm, and finally explore the actual application value of the optimal control in the semi-active suspension.
出处
《内燃机与配件》
2016年第8期18-21,共4页
Internal Combustion Engine & Parts
