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提出一种基于线性预测和Z转换(linear prediction and Z-transform,LPZ)谱分析法的非高斯脉动风压模拟算法.运用Johnson变换系统实现高斯随机过程到非高斯白噪声的转换;再使用LPZ对其进行数字滤波,进而得到所需的非高斯脉动风压.采用基于LPZ谱分析法对单变量非高斯随机信号和非高斯脉动风压进行了数值模拟.通过对模拟的非高斯信号和脉动风压的统计参数(峰度和偏度)与目标统计参数,以及模拟的功率谱与目标功率谱进行比较,验证了基于LPZ谱分析法的非高斯脉动风压模拟算法的有效性.
A non-Gaussian pulsating wind pressure simulation algorithm based on linear prediction and Z-transform (LPZ) spectral analysis is proposed.The transformation of Gaussian random process to non-Gaussian white noise is implemented by using Johnson transform system, and LPZ And then get the required non-Gaussian pulsating wind pressure.The numerical simulation of univariate non-Gaussian stochastic signal and non-Gaussian pulsating wind pressure based on LPZ spectrum analysis is carried out.Based on the simulation of non-Gaussian signal and pulsation The statistical parameters of wind pressure (kurtosis and skewness) and the target statistical parameters, as well as the simulated power spectrum and target power spectrum are compared to validate the effectiveness of the non-Gaussian pulsating wind pressure simulation algorithm based on LPZ spectrum analysis.