摇板造波机白噪声波生成方法  

White Noise Wave Generation Method of Flap Type Wave-Making System

作　　者：胡祝兵 毕兆岩 HU Zhubing;BI Zhaoyan(Department of Electrical and Electronics Engineering,Hebei Petroleum University of Technology,Chengde Hebei 067000,China)

机构地区：[1]河北石油职业技术大学电气与电子系,河北承德067000

出　　处：《机床与液压》2023年第10期54-59,108,共7页Machine Tool & Hydraulics

摘　　要：为了更简便地生成白噪声波,并探究生成白噪声波所需控制参数的变化规律,提出一种基于摇板造波机的白噪声波生成方法,研制了相应的转阀控制式摇板造波机实验平台,并建立了造波系统数学模型。通过求解数学模型,得到生成白噪声波所需的控制参数,探讨控制参数变化规律。进一步地,依据所求得的控制参数,开展了白噪声波浪生成实验,通过改变组成波波幅及频率,生成了能量谱密度不同的3种白噪声波。研究结果表明:白噪声波可分解为一系列等波幅不同频率的组成波,且生成白噪声波浪的平均能量谱密度与组成波波幅呈正相关变化。To generate white noise wave in a convenient way and to explore the change law of control parameters required to generate white noise wave,a white noise wave generation method was proposed by using a flap type wave-making system.The corresponding wave-making system was developed using an electro-hydraulic rotary-valve-control vibrator.And a mathematical model of the wave-making system was established.Then,the change law of the required control parameters was obtained by solving the model and a series of waves were generated based on the calculated control parameters.The results show that waves with equal amplitude and different frequency can be generated.White noise waves with different energy spectral density can be generated under flap type wave-making system.The average energy spectral density of generated white noise wave has a positive correlation to the amplitude of component waves.

关 键 词：白噪声波 摇板造波机 转阀 控制参数 能量谱密度 

分 类 号：U661.1[交通运输工程—船舶及航道工程]