【摘要】 为了分析半主动控制对高速车辆运行平稳性的影响，首先运用SIMPACK软件建立50自由度整车非线性动力学模型，随后基于开关型、连续型天棚阻尼控制策略以及最优控制策略设计3种二系横向半主动控制悬挂系统；运用SIMPACK-MATLAB联合仿真分析在不同运行速度、不同等效锥度、一次蛇行失稳、不同时滞以及时滞补偿下半主动控制对高速车辆运行平稳性的影响。结果表明：在不同运行速度与不同等效锥度下，3种半主动控制系统均能有效提高车体的横向平稳性；一次蛇行失稳条件下，连续型天棚阻尼控制与最优控制能有效提高车体的横向平稳性；时滞越大，各控制策略下的平稳性所受影响越大；该时滞补偿系统能有效提高半主动控制悬挂系统的抗时滞能力。更多还原

【Abstract】 In order to analyze the effect of semi-active control on the ride quality of high-speed vehicles, the nonlinear dynamic model of 50-DOF vehicle was established by SIMPACK. Subsequently, based on the on/off sky-hook damping control strategy, continuous sky-hook damping control strategy and the optimal control strategy, three semi-active control systems of secondary lateral suspension were designed. Under the conditions of different speeds, different equivalent conicity,primary hunting, different time delay and time delay compensation, the effect of semi-active control on the lateral ride quality of high-speed vehicles was analyzed by co-simulation on SIMPACK-MATLAB. The results show that under different speeds and different equivalent conicity the three semi-active control can effectively improve the lateral ride quality of the car body. Under the primary hunting, the continuous sky-hook control and optimal control can effectively improve the lateral ride quality. The larger the time delay, the greater the impact on the ride quality for each control strategy. The time delay compensation system can effectively improve the anti-time-delay ability of the semi-active control suspension system.更多还原