【摘要】 本文以半主动悬架与二阶最优控制理论为基础,通过被动悬架阻尼的主动力表示,结合对最优控制力的分解以及最优评价指标、振动加速度功率谱密度函数与系统振动阻尼之间关系的研究,建立了多自由度汽车振动系统在随机输入下以振动加速度功率谱密度函数极小为目标的悬架最优减振器阻尼参数设计的方法,并给出了7自由度汽车振动系统最优减振器阻尼设计实例。更多还原

【Abstract】 Based on the theories of semi-active suspension design and second-order optimal control, through the study on the relationships between optimal control force, performance index, system vibration acceleration power spectral density and optimal suspension damping coefficient, a new algorithm is proposed to determine the optimal damping coefficient with a stochastic and road input and taking the acceleration power spectral density function as the objective. A design example for a mini-car is also given.更多还原