3.6.1 稳态误差的定义 3.6.2 系统类型 3.6.3 扰动作用下的稳态误差

3.1 计算对象表示—值与类型 3.2 计算对象实现—存储 3.3 计算对象连接—束定 3.4 计算组织---程序控制 3.5 计算组织---函数与过程 3.6 计算组织---抽象与封装

第一节 概述 第二节 对象选择与团队建设 第三节 信息收集与功能分析及评价 第四节 方案创新 第五节 方案实施与成果鉴定

AMCM99问题-A大碰撞 NASA(航空航天管理局)常常考虑这样一个问题一颗较大的小行星与地球 的碰撞将会产生怎样的后果。 作为这个问题的一部分,要求你们讨论这颗小行星该到地球南极所造成的后 果,有人认为其后果将与该行星撞到地球其它区域的后果有很大的不同。 你们可以假设这颗小行星的直径大约为100米,并且立接撞在南极点处

一、进气道参数选择 二、进气道的功用与要求 三、进气道的参数及其选择 四、尾喷管的型式和主要参数选择 五、尾喷管的功用 六、尾喷管工作特征的参数 七、尾喷管的型式 八、尾喷管主要参数选择

Direct determination of the joint probability density of several functions o several ra andom variables Suppose we have the joint probability density function of several random variables x, Y, Z, and we wish the joint density of several other random variables defined as functions xyz

System parameters are contained in,(t) and(t) Desired output is generated by taking the signal through the desired operator. The difference between the actual output and the desired output is the error, whose mean squared value we want to minimize We require a stable and realizable system. The error e(t) is given by:

Note that in the case of repeated roots of the denominator, a pole of multiple order contributes only a single residue. To evaluate F(s)ds by integrating around a closed contour enclosing the entire left half plane, note that if F()0 faster than-for large s, the integral along the curved part of the contour is zero

This is the main reason why use of the characteristic function is convenient This would also follow from the more devious reasoning of the density function for the sum of n independent random variables being the nth order convolution of the individual density functions-and the knowledge that convolution in the direct variable domain becomes multiplication in the transform domain

Special case: [(P)] is rational: In this solution formula we can carry out the indicated integrations in literal form in the case in which [(P)] is rational. In our work, we deal in practical way only with rational,sn, and, so this function will be rational if D(p)is rational This will be true of every desired operation except predictor. Thus except in the case of prediction, the above