基于Matlab的悬置解耦优化程序开发

Development of Optimization Program of Mounting Decoupled Based on Matlab

汽车动力总成是通过悬置系统安装在车身上,为实现更大限度地发挥悬置系统的作用,文章建立了动力总成悬置系统的相关坐标系,对使用的欧拉角度、坐标变换和惯量张量的变换进行了研究。在推导出悬置系统在扭矩轴坐标系下固有频率及固有振型的基础上,采用能量解耦法及序列二次规划(SQP)优化算法,实现悬置系统刚体模态解耦优化。并运用Matlab/guide模块开发了动力总成悬置系统的解耦优化专用程序界面,用户可方便地完成悬置系统的建模及性能优化,快速获得悬置系统模态及解耦能量,实现动力总成悬置系统的合理布置和匹配。

Automotive powertrain assembly is mounted on the auto body through the suspension system. In order to play the suspension system role, the relevant coordinate of powertrain mounting system was presented, and Euler angular coordinate, the coordinate transformation and transformation of inertia tensor was analyzed in the paper. Based on the inherent frequency and inherent vibration mode of the mounting system in the torque axis coordinate, the decoupling design of rigid mode was carried out on the mounting system by adopting decoupling theory of the energy method and the sequential quadric planning （SQP） algorithm. And by using Matlab/guide module, a special program interface was developed for optimization design of mounting system. Consumer can set up and analyze model of mounting system expediently, obtain the mounting system mode and decoupled energy rapidly, and realize distributing and matching of mounting system rationally.