Besides , i also bring forward a kind of variable vector distance membership function ? auss distance membership function . for the convenience of using the distance membership function , i also get the general formula of partial derivative according to the parameter . chapter 5 : using nts fis to model the cart - pole system and compare the result when using anfis 作为对ntsfis建模的补充,提出了一种基于变量向量的距离隶属函数? ?高斯距离隶属函数mgaussmf ( ; , _ 0 , ) ,并推导出了高斯距离隶属函数mgaussmf ( ; , _ 0 , )对其参数求偏导的一般公式。
Abstract : in order to solve the double parameters enveloped in the geartooth flank generating , the complicated double parameter envelope is simplified to the generating process between work - piece and imaginary crown generating gear by means of mathematical transformation . the equation of the imaginary crown generating surface and the partial derivatives are deduced , so the differential geometric parameters of the generating surface can be obtained . by analyzing the generating motion between the imaginary crown generating gear and the work - piece , all the first to third order geometric parameters of the generated tooth flank at any given point can be calculated 文摘:为了解决直接求解展成法加工中存在的复杂双参数包络问题时的困难,提出通过数学变换,将此包络问题转化为假想平面产形轮与工件之间的展成问题来进行研究.推导了假想产形面的方程和各阶偏导矢,于是可获得产形面的微分几何参数.通过分析假想平面产形轮与工件之间的展成运动,即可得到被展成齿面上任意指定点的全部一至三阶微分几何参数
To the large - scale atmosphere , we separate the terms of the horizontal vorticity converting into the vertical vorticity , which considered as the baroclinic terms , from the terms that not including horizontal vorticity by the rules of the p coordinate transforming to the z coordinate in the traditional vorticity equation , and carry out the scale analysis , and then conclude that the baroclinic terms are able to reach the same magnitude grade as the partial derivative of the vertical vorticity to time when it takes place the large scale precipitation in the summer monsoon period in china . by analyzing the game reanalysis data from april to august in 1998 in the region of chinese continent , we found that the baroclinic terms is important to the large - scale cyclone developing above the 600hpa , and the magnitude changing of the baroclinic terms is nearly in - phase as the monsoon movement , so which imply exactly that the magnitude changing of the baroclinic terms is the one of the natural characters of the summer monsoon evolution and equivalent to the movement rule of the subtropical high of the western pacific 在p坐标垂直涡度方程中,利用p坐标向z坐标转换的公式将水平涡度向垂直涡度转化的所有项分离出来,这些项具有明显的斜压特征,对其进行尺度分析后,得出在可以忽略潜热释放对涡度影响的对流层中、高层,此转化项是大尺度斜压涡度发展的重要项。通过对1998年48月的game再分析资料进行实际计算也发现,转化项在东亚夏季风上升支的600hpa及以上层次对垂直涡度的局地变化贡献很大,不能忽略。同时发现水平涡度向垂直涡度的转化在南海季风爆发时和江淮梅雨入梅及发展过程中均有指示性意义,在南海季风爆发以后,在中国东南部地区,转化项的大小与夏季风的活跃和中断等活动有着几乎一致的变化规律,这从侧面也指出了,此转化项的变化是夏季风演变所具有的本质特征,并且它反映出了西太平洋副高在中国大陆的活动情况。
the derivative of a function of two or more variables with respect to a single variable while the other variables are considered to be constant 同义词:partial
In mathematics, a partial derivative of a function of several variables is its derivative with respect to one of those variables, with the others held constant (as opposed to the total derivative, in which all variables are allowed to vary). Partial derivatives are used in vector calculus and differential geometry.