小扰动法 meaning in English
linear perturbation theory
perturbation method
small-disturbances method
Examples
- It is also introduced the task and composition of the system . secondly , in order to studying the dynamic characters of the bomb , the vertical and side direction perturbation equations of the bomb are analyzed . moreover , the transfer functions of the bomb are identified
第二，为了研究弹的动态特性，利用小扰动法将微分方程线性化，得到弹体纵向、侧向扰动方程组，用系数冻结法推导出简易制导炸弹的传递函数。 - The tactical missile seeker handover accuracy from midcourse to terminal guidance is researched . the small perturbation method is proposed to analyse error sensitivity of the seeker presetting parameters from error sources . firstly , the terminal guidance seeker presetting parameters are computed , based on the equations of a surface - to - air missile movement and a target movement . then the seeker presetting unaccuracy due to the command guidance radar measurement errors is also computed . it can be seen that the seeker presetting errors increase rapidly when the missile is close to the target , which leads to an important conclusion that the late seeker handover from midcourse to teminal guidance should be avoided
研究复合制导的战术导弹中末制导交班的导引头预定精度问题.提出用小扰动法分析导引头预定参数对误差源的误差敏感性关系.以中远程防空导弹为例，结合导弹运动方程组和目标运动模型，计算了中末制导交班的导引头预定参数，并计算了在制导站雷达测量误差下的末制导导引头预定参数的计算精度.可知，导引头定位参数的计算误差随着弹目距离的接近而显著增大，得到中末制导交班不能太晚的重要结论 - Abstract : the tactical missile seeker handover accuracy from midcourse to terminal guidance is researched . the small perturbation method is proposed to analyse error sensitivity of the seeker presetting parameters from error sources . firstly , the terminal guidance seeker presetting parameters are computed , based on the equations of a surface - to - air missile movement and a target movement . then the seeker presetting unaccuracy due to the command guidance radar measurement errors is also computed . it can be seen that the seeker presetting errors increase rapidly when the missile is close to the target , which leads to an important conclusion that the late seeker handover from midcourse to teminal guidance should be avoided
文摘:研究复合制导的战术导弹中末制导交班的导引头预定精度问题.提出用小扰动法分析导引头预定参数对误差源的误差敏感性关系.以中远程防空导弹为例，结合导弹运动方程组和目标运动模型，计算了中末制导交班的导引头预定参数，并计算了在制导站雷达测量误差下的末制导导引头预定参数的计算精度.可知，导引头定位参数的计算误差随着弹目距离的接近而显著增大，得到中末制导交班不能太晚的重要结论 - In this dissertation , the experimental study of rolling condition on two - phase flow instabilities of the forced - single - tube circulation system was carried out . furthermore , based on the d - partition method and the hypothesis of drift flow model , given some conservative equation , using the perturbation method the response of the pressure drop of the tube to the inlet flow rate perturbation was analyzed both in rolling condition and in normal upright position
本文主要通过实验对摇摆条件对单管强迫循环中汽液两相流动不稳定性的影响，同时在d分区法的前提下，在两相区基于漂移流模型，一定的守恒条件下，在摇摆和不摇摆工况中用线性小扰动法对实验段的压降对入口流速的扰动的响应进行了分析。