Secondly , the possibility and efficiency of applying the spectrum analysis usually used in vibration testing for rotating machine to operation vibration of hv circuit breaker is discussed , the paper goes deeply into this new method and idea , especially the zoom spectrum algorithm . by comparing normal fft , zoom - fft ( zfft ) and chip - z transform ( czt ) on principle , arithmetic , characteristic and amount of calculation , czt is proved superior and thus selected 論文深入研究了細(xì)化頻譜分析技術(shù),對比分析了基帶分析和常用的選帶細(xì)化分析算法的原理、方法、運(yùn)算量和特點,在此基礎(chǔ)上,選定線性調(diào)頻z變換( czt )作為斷路器操動機(jī)構(gòu)振動信號頻譜分析的細(xì)化方法。