基于遗传算法的冲击响应谱时域合成方法

Time-domain synthesis method for shock response spectrum based on genetic algorithm

冲击响应谱作为描述冲击环境的特征参数,广泛应用于设备冲击环境条件制订,而如何从冲击响应谱合成出时域信号,是开展冲击响应分析的基础。本文采用遗传算法开展冲击响应谱时域合成方法研究,通过构造波形基函数,并将合成信号的冲击响应谱与设计值进行比较,从而运用优化方法解决冲击响应谱时域合成问题。运用遗传算法全局优化的特点,对波形参数进行优化,得出满足冲击响应谱容差限制条件的解,并通过实例对该方法的结果进行了验证。

As a fundamental parameter for describing shock effect, shock response spectrum has been extensively applied in the formulation of dynamic environment and response analysis. It is significant in test simulation and response analysis to synthesize time domain signals from the shock response spectrum. Genetic algorithm has been used in time domain synthesis for shock response spectrttm. Time domain synthesis has been transformed into the optimization problem by using the basic function and comparing the shock response spectrum with the design level. Global optimization merit of genetic algorithm has been adapted in the parameter optimization to get the result in accordance with the error bound, with the relevant example being given as well.