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

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (5) : 168-173.

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

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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.

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Parameter identification / Improved partitioning and dimensional increment precise integration method / NSGA-Ⅱmethod / Sobol&rsquo / method / Dynamic performance optimization

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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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