In the process of threshing , the significance of factors , which influence threshing performance , not only include some certain factors such as feed quantity , cylinder rotary speed , distance between cylinder and concave , thresher concave radian but also include some uncertain factors such as the crop ' s variety , water content and the proportion of cereal straw . for this reason , the seed - husking plant is system with a character of uncertain , multi - input - output and complex nonlinear 脱粒装置的工作过程极为复杂，影响脱粒性能的因素很多，除了喂入量、滚筒转速、凹板长度与入口间隙等确定性因素外，还有作物品种、作物含水率以及谷草比等一些不确定性因素，因此脱粒装置是一个具有不确定性、多输入多输出的复杂非线性系统。
In this article , we use idea of turning dispersion into convergence and put all the well ' s points into the same unit net to think about it . and answer three questions of the distribution of well drilling by the way of searching for groups of points . fincite - step - searching underthe condition of translationg fcoordinate system or revolving coordinate system . to first question . we find two algo - rithms and make use of data that is given to find the solution . we seek coorlinate of net point is co . 361 , 0 . 461 ) and mostly four old well ' s points are utilized at the same time by first algorithim , which are no . 2 , no , 4 , no . 5 , no . 10 . by second algorithm , we rechon the coordinate of net point is co . 390 , 0 . 505 ) . and that mostly four old well ' s points are utilizld which are no . 2 , no . 4 , no . 10 . to second question , we turn it into the first question by angling awt the center of net point . we seek that mostly six old well ' s points are utilized at the same time , which are no . 1 , no . 6 , no . 7 , no . 8 , no . 9 , no . 11 , when net is angled 0 . 78 radian . and net point is translated to ( 0 . 75 , 0 . 076 ) ( at nwe coordinate system ) . to third question , wefind a necessary and sufficient condition and affer algorithms , at last , we analyse algorithms 运用化分散为集中的思想,把所有的井点都放在同一个单位网格内考虑.在坐标可平移、旋转的条件下，利用寻找点群、有限步骤搜索法，对钻井布局的三个问题进行了解答.对问题一，给出了两个不同算法.并对题目提供的数据进行了求解，算法1得到的结点为（ 0 . 361 , 0 . 461 ） ,最多有4个旧井点被同时利用，它们是第2 、 4 、 5 、 10个井点;算法2得到的结点为( 0 . 390 , 0 . 505 ) ,最多有4个井点被利用,它们是第2 、 4 、 5 、 10个井点.对问题二，以结点为中心旋转一定的角度后，归结为问题一进行求解，求解结果为当网格倾斜角为0 . 78弧度（相对原坐标系） ，结点平移到（ 0 . 75 , 0 . 076 ）点(在新坐标系下) ，可被同时利用的最多旧井点为6个，它们是第1 、 6 、 7 、 8 、 9 、 11个井点，对问题三，我们给出了充要条件，并给出了算法.最后还分析了算法的优劣性
This paper provides the precision detection system which serves the fine tracking system principle sample . this sample will ground the realization of space - borne information network . based on the analysis of fine tracking technology we design the scheme of a fine tracking system principle sample which can perform a precision of ten millionth radians 本论文根据“ 863 ”专家组下达的关于空间光通信的高新技术的研究课题，拟配合系统总体设计，完成光通信精跟踪系统原理样机的研制，并能提供可靠的精度检测系统，为以后的空间站天基综合信息网的工程实现奠定基础。
Applying perturbation technique , the image force on dislocation is obtained when dislocation located arbitrary point either outside or inside inhomogeneity , however , a number of previous related investigations on above problems only calculated the interactive dislocation force as the dislocation lies on the x - axis . the variation of screw dislocation forces for correlative material parameters and different radians of crack or rigid line is discussed particularly 针对以往大多数相关文献~ ( [ 7 ] - [ 16 ] )只求出了位错在x轴上时位错力表达式，本文应用扰动技术，导出了位错在基体或夹杂中任意点的位错力公式；并讨论了位错力随材料相关参数，裂纹或刚性线弧度的变化规律。
Based on whole design , this essay adopts gps technology to make the key component in taximeter - orientation module , compiles corresponding software , and makes adjustment and experiment . also it has done a profound research in district - identification arithmetic , that is improved radian arithmetic , and it is verified by matlab . we adopt anti - interference measures in both hardware and software to ensure communication reliability and working stability 在确定总体设计方案的基础上，本文采用gps技术研制具有区域识别功能出租车计价器中的关键部件? ?定位模块，编制了相应的运行软件，并进行了调试和试运行试验；对区域识别算法进行了深入研究，提出了区域识别的算法?改进弧长法，并运用matlab软件进行了算法验证；为了保证通信的可靠性和工作的稳定性，从软、硬件两个方面采取了抗干扰措施。
