To conveniently and accurately evaluate the wind-induced accumulated fatigue damage of high-rise structures in frequency domain, an improved equivalent narrow band method was proposed.
为了在频域内方便准确地估算高耸结构的风振疲劳累积损伤，提出了一种改进的等效窄带算法。
High frequency noise of gears is mainly from tooth error and base pitch, and low frequency noise from accumulated errors of tooth spacing.
齿轮高频噪声产生的主要原因是齿形误差和基节偏差；低频噪声产生的主要原因是齿距积累误差。
The accumulated fatigue damage was calculated in frequency domain by equivalent stress method and equivalent narrow band method respectively.
在频域内分别用等效应力法和等效窄带法计算了累积损伤。
PL/M-96 program language is used as the software of the controller. The signal frequencies are distinguished and the persistence time of the frequency is accumulated with interrupt process routine.
数字化控制器控制软件采用PL/M-96高级语言编程，其中断处理程序用于辩别信号频率、累计每一频率持续时间。
PL/M-96 program language is used as the software of the controller. The signal frequencies are distinguished and the persistence time of the frequency is accumulated with interrupt process routine.
数字化控制器控制软件采用PL/M-96高级语言编程，其中断处理程序用于辩别信号频率、累计每一频率持续时间。
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