论文部分内容阅读
针对汽车悬架逆向开发中底盘布置对悬架运动学特性的不稳定性影响，首先通过层次分析法将前束轮跳、外倾轮跳、后倾轮跳、轴距轮跳以及轮距轮跳特性进行归一化处理得到悬架运动学目标函数；其次，利用Isight软件对悬架硬点进行灵敏度分析确定可控因子与噪声因子。最后，在悬架动力学模型平跳仿真基础上，选取轮跳量作为信号因子采用田口法动态系统设计获得Pareto解集，根据动态信噪比以及系统信号因子与系统响应关系的敏感度选择变量最佳水平，并通过优化前后结果对比，表明目标性能能够达到理想范围。
Aiming at the instability of the suspension kinematics of the chassis suspension in the reverse development of the automobile suspension, firstly, through the analytic hierarchy process, the characteristics of the front wheel jump, the external wheel jump, the rear wheel jump, the wheelbase jump, Jump characteristics were normalized to get the kinematic objective function of the suspension. Secondly, the sensitivity of the hard point of the suspension was determined by Isight software to determine the controllable factor and the noise factor. Finally, on the basis of the simulation of the suspension dynamics model, we choose the wheel-slip as the signal factor and adopt the Taguchi dynamic system design to obtain the Pareto solution set. According to the sensitivity of the signal-to-noise ratio and the system response, The best level, and by comparing the results before and after optimization, indicating that the target performance can reach the desired range.