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本文用自动放宽精度的办法,改善了MARPLE法的计算稳定性。将并MARPLE法从复值域变到实值域,从用大计算机变到用超微型计算机,通过人机对话,可选做功率谱、均方根谱及细化谱;可选频率范围,谱图增益;可选细化频率及带宽,细化次数不限;可在峰顶自动打印峰值频率及谱的名称。此法应用于拖拉机振动的功率谱分析,其结果与7T17S信号处理机所作FFT谱基本相符。
In this paper, the method of automatically reducing the accuracy improves the computational stability of the MARPLE method. MARPLE method will be changed from complex value domain to real value domain, from the use of large computers to the use of ultra-miniature computers, through man-machine dialogue, optional power spectrum, root mean square spectrum and refinement spectrum; optional frequency range, Spectral gain; optional frequency and bandwidth refinement, unlimited number of refinements; Peak peak can automatically print the name and spectrum frequency. This method is applied to the power spectrum analysis of the tractor vibration. The result is in good agreement with the FFT spectrum of 7T17S signal processor.