初始时刻 meaning in English
initial time
Examples
- By using a saturated feedback control structure , the control law is obtained by solving a linear matrix inequality ( lmi ) optimization problem on - line
初始时刻优化问题的可行性保证了闭环控制系统的鲁棒稳定性。 - The results are that the maximum displacement and maximum stress occurs at initial time and the maximum stress is less than permissible stress
结果表明,结构最大应力和最大位移均发生在初始时刻,最大应力小于许用应力。 - The accuracy of modern numerical prediction mainly depends on the exact model that can simulate the synoptic course and the initial field that can describe the initial time
现今数值预报的准确程度主要依赖于能够描述天气过程的精确模式和能够反映初始时刻的准确初始场。 - The employment of such a technique iv appears necessary because the traditional linear design process cannot incorporate the nonlinear dynamics of such system and its physical limitations
该方法使得倒立摆系统从初始时刻开始就运行在滑模面上，从而使系统具有较强的鲁棒性，取得了非常好的实验效果 - In light of the limitation of fast fourier transform ( fft ) for the method of traditional spectrum analysis to analyze the unsteady signal , wavelet and wavelet analysis are made for the typical unsteady process signal of starting up and shut down with the good characteristic of simultaneous localization in both the time and the frequency domains based on the field test on the vibration of two - row placed units in lijiaxia hydropower station , in which the signal is decomposed into different frequency band , and then the weak signal is caught and the dominant frequency is picked up for the analysis of the vibration source
摘要基于李家峡水电站双排机组振动的现场试验研究，并且针对传统频谱分析方法傅立叶变换( fft )对于非平稳信号已力不从心这一缺陷，利用小波分析方法在时域和频域上同时具有良好的局部化性质，通过对开停机这一典型非平稳过程信号进行小波及小波包分析，将其分解到不同频带内，获取微弱信息和提取优势频率，并对其作振源分析，得出开停机初始时刻因水流不稳均出现强烈的振动现象，且低频段信号能量最大，开停机过程水流脉动压力和尾水涡带摆动是引起定子基础振动的主要原因。