摘要
随着国家工业化和机械化的发展,故障诊断成为了热点问题。故障诊断中对信号进行处理至关重要,而加窗是信号处理中常见的手段。概括了经典窗函数的特点及工程应用,总结了卷积窗、自乘法窗、时频窗、谐波窗等此类新型窗函数的性质,对加窗的原理及影响、加窗幅值修正的问题进行较为详细的探讨。通过对比分析,可以发现新型窗函数在经典窗函数的基础上进一步发展和优化。与传统的窗函数相比,新型窗函数的性能更加优越,在工程实践中应用的范围更广。
Signal processing is very important in fault diagnosis,and windowing is an ordinary method in the domain of signal processing.This paper demonstrates the nature and engineering applications of traditional window functions,summarized the properties of new Window functions,such as convolution windows,self-multiplication windows,time-frequency windows,harmonic windows.The significance and the impact of windowing,and the correction of windowing amplitude were represented at length.The new window function is further developed and optimized on the basis of classical window function.Through comparative analysis,it is easy to find that the new window function is developed and optimized further on the ground of classical window function.Its performance is superior to traditional window function and has been widely applied to engineering practice.
出处
《工业控制计算机》
2022年第6期119-121,125,共4页
Industrial Control Computer
基金
国家自然科学基金资助项目(51975276)。
关键词
信号处理
窗函数
加窗
幅值修正
signal processing
window function
windowing
amplitude correction
