To improve the suspension performance and steering stability of light vehicles, we built a kinematic simulation model of a whole independent double-wishbone suspension system by using ADAMS software, created random ex...To improve the suspension performance and steering stability of light vehicles, we built a kinematic simulation model of a whole independent double-wishbone suspension system by using ADAMS software, created random excitations of the test platforms of respectively the left and the right wheels according to actual running conditions of a vehicle, and explored the changing patterns of the kinematic characteristic parameters in the process of suspension motion. The irrationality of the suspension guiding mechanism design was pointed out through simulation and analysis, and the existent problems of the guiding mechanism were optimized and calculated. The results show that all the front-wheel alignment parameters, including the camber, the toe, the caster and the inclination, only slightly change within corresponding allowable ranges in design before and after optimization. The optimization reduces the variation of the wheel-center distance from 47.01 mm to a change of 8.28 mm within the allowable range of ?10 mm to 10 mm, promising an improvement of the vehicle steering stability. The optimization also confines the front-wheel sideways slippage to a much smaller change of 2.23 mm; this helps to greatly reduce the wear of tires and assure the straight running stability of the vehicle.展开更多
提出了一种基于UG构建双横臂独立悬架运动学分析系统的方法,并应用该方法开发出了相应的原型系统,给出了系统的框架结构。系统的快速参数化设计模块可方便、快捷地对双横臂悬架运动仿真模型的结构参数、几何参数和定位参数进行修改;系...提出了一种基于UG构建双横臂独立悬架运动学分析系统的方法,并应用该方法开发出了相应的原型系统,给出了系统的框架结构。系统的快速参数化设计模块可方便、快捷地对双横臂悬架运动仿真模型的结构参数、几何参数和定位参数进行修改;系统的运动学仿真分析模块通过调用UG/Motion集成的MSC ADAMS或Function Bay RecurDyn解算器来获取仿真分析结果,通过集成Matlab的绘图功能对分析结果进行输出查看;以前轮定位参数的变化量最小、车轮侧向滑移量最小为优化目标,采用遗传算法构建了系统的悬架机构结构参数优化设计模块。通过一个设计实例验证了系统的正确性及基于遗传算法的结构参数优化设计模块的有效性。系统的框架结构具有良好的可扩展性,已在麦弗逊悬架的优化设计过程中得到应用。展开更多
基金the Postdoctoral Science Foundation of China (No. 2004036396)the Foundation of 985- Automotive Engineering of Jilin University
文摘To improve the suspension performance and steering stability of light vehicles, we built a kinematic simulation model of a whole independent double-wishbone suspension system by using ADAMS software, created random excitations of the test platforms of respectively the left and the right wheels according to actual running conditions of a vehicle, and explored the changing patterns of the kinematic characteristic parameters in the process of suspension motion. The irrationality of the suspension guiding mechanism design was pointed out through simulation and analysis, and the existent problems of the guiding mechanism were optimized and calculated. The results show that all the front-wheel alignment parameters, including the camber, the toe, the caster and the inclination, only slightly change within corresponding allowable ranges in design before and after optimization. The optimization reduces the variation of the wheel-center distance from 47.01 mm to a change of 8.28 mm within the allowable range of ?10 mm to 10 mm, promising an improvement of the vehicle steering stability. The optimization also confines the front-wheel sideways slippage to a much smaller change of 2.23 mm; this helps to greatly reduce the wear of tires and assure the straight running stability of the vehicle.
文摘提出了一种基于UG构建双横臂独立悬架运动学分析系统的方法,并应用该方法开发出了相应的原型系统,给出了系统的框架结构。系统的快速参数化设计模块可方便、快捷地对双横臂悬架运动仿真模型的结构参数、几何参数和定位参数进行修改;系统的运动学仿真分析模块通过调用UG/Motion集成的MSC ADAMS或Function Bay RecurDyn解算器来获取仿真分析结果,通过集成Matlab的绘图功能对分析结果进行输出查看;以前轮定位参数的变化量最小、车轮侧向滑移量最小为优化目标,采用遗传算法构建了系统的悬架机构结构参数优化设计模块。通过一个设计实例验证了系统的正确性及基于遗传算法的结构参数优化设计模块的有效性。系统的框架结构具有良好的可扩展性,已在麦弗逊悬架的优化设计过程中得到应用。
