履带急救车非线性减振系统动态性能优化

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (5) : 168-173.

论文

履带急救车非线性减振系统动态性能优化

军事医学科学院卫生装备研究所，天津，300161

作者信息 +

The Dynamic Performance Optimization of the Tracked Ambulance Nonlinear Vibration-Reduction System

Institute of Medical Equipment, Academy of Military Medical Sciences, Tianjin 300161

Author information +

文章历史 +

摘要

针对履带急救车非线性减振系统在随机激励下的动态性能优化问题，首先提出了一种基于改进的分块增维精细积分法和NSGA-Ⅱ算法的多目标参数辨识方法，对履带急救车非线性减振系统进行了参数辨识；然后，应用Sobol’法分析了减振系统各物理参数对系统输出的全局灵敏度；最后，应用遗传算法对减振系统进行了动态性能优化。结果表明：经过优化，担架台垂向振动加权加速度均方根值由原来的0.5210m/s2下降为0.4183m/s2，降幅达19.7%，减振系统动态性能得到了明显改善。

Abstract

For the dynamic performance optimization of the tracked ambulance nonlinear vibration-reduction system under random excitation, a new multi-objective parameter identification method based on the improved partitioning and dimensional increment precise integration method and NSGA-Ⅱ method was proposed to identify the parameters of the tracked ambulance nonlinear vibration-reduction system. And then the Sobol’ method was used to study the global sensitivity of the parameters with respect to the system output. At last, the dynamic performance was optimized by using genetic algorithm. The optimization results show that the weighted vertical root mean square value of the stretcher base’s acceleration reduces from 0.5210m/s2 to 0.4183m/s2, a 19.7% drop, which improve the dynamic performance of vibration-reduction system greatly.

导出引用

杨猛，徐新喜，段德光，苏卫华，苏琛. 履带急救车非线性减振系统动态性能优化[J]. 振动与冲击, 2015, 34(5): 168-173

YANG Meng, XU Xin-xi*,DUAN De-guang, Su Wei-hua, Su Chen. The Dynamic Performance Optimization of the Tracked Ambulance Nonlinear Vibration-Reduction System[J]. Journal of Vibration and Shock, 2015, 34(5): 168-173

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