一、设连续系统函数H(s)在虚轴上收敛,其幅频响应函数为H(j),试证幅度平方函数 H()?=H()(-s) sjo 二、其离散系统的系统函数z2+3z+2H(z)=2z-(K-1)z+1

一、y2(k)求法 1.一阶系统:

1.1概述 IA IIA Humphry Davy(戴维 Li Be1778~1829)利用电解法 NKaMg制取了金属K、Na、Ca、 CaMg、Sr、Ba,确认氯气 Rb Sr是一种元素,氢是一切酸 Cs Ba类不可缺少的要素,为化 ns1 ns2学做出了杰出贡献

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asynchronous[ae' s ekranas]a.异步的 multiplex[' mAI ti ple k sv.多路复用 ntal[i'nij1]a.最初的,开始的 universal[ju:ni'va:sa1]a宇宙的,普遍的,通用的 packet[' p aek i t]n.小包,分级

Words 15 integrate''i]vt.使结合,使并入 consequently['kon wan Ii]ad.因而,所以 architecture['a: kt]n.结构,组织 dictate[ k't]v.口述,命令,支配 global['g' bal1]a.全球的,世界的 megatelecommunication电信 mega-构词成份,“大”“强

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Goal: Design a controller K(s so that the system has some desired characteristics. Typical objectives Stabilize the system( Stabilization) Regulate the system about some design point(Regulation Follow a given class of command signals(Tracking) Reduce the response to disturbances(Disturbance Rejection Typically think of closed-loop control > so we would analyze the

The finite element method In FEMi we derale finite element equations fro PVD swe- SWe and obtained: K0=R:=4…n waere n:number of element nodal p Ue: elenent nodal displace ents

not repeated in the same additive term where the index appears. Free means that the index represents all the values in its range Latin indices will range from 1 to, (i,j, k