《系统工程》第四版习题解答.pdf
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1、系统工程第四版习题解答第三章第三章 系统模型与模型化系统模型与模型化21.给定描述系统基本结构的有向图,如图3-16a、b 所示。要求:(1)写出系统要素集合S及S上的二元关系集合Rb。(2)建立邻接矩阵A、可达矩阵M及缩减矩阵M。解:(2)3-16a:规范方法:00A 0001001110101000010,M 00000000111001111110110,M M010111区域划分Si12345R(Si)1,2,3,4,52,3,43,442,3,4,5A(Si)11,2,51,2,3,51,2,3,4,51,5C(Si)12345E(Si)4所以系统无法划分为两个或两个以上相互独立的区
2、域,即(S)P 1,2,3,4,5。1M(P)2345级位划分110000234511111110011000101111要素集合Si123R(Si)1,2,3,4,52,3,43,4A(Si)11,2,51,2,3,5C(Si)123E(Si)(P2)L14P L01/234542,3,4,51,2,3,52,332,3,51,2,522,51,5511,2,3,4,51,511,2,51,2,3,51,511,2,51,511,5145123512515143251P L0 L11235125151L23P L0 L1 L2L32P L0 L1 L2 L3P L0 L1 L2 L3 L4L
3、45L51(P)L1,L2,L3,L4,L54,3,2,5,1L1M(L)L2L3432411111411000L1A M(L)I L2L3325100001000110011101111325100001000110001100011432401000325100000000100001000010L45L51提取骨架矩阵L1M(L)L2L3432L45L51L45L51绘制多级递阶有向图2/2343251实用方法:第一级第二级第三级第四级第五级1缩减矩阵M M 2345110000234511111110011000101111L1M(L)L2L3432L45L51411111325100
4、001000110011101111432513-16b:规范方法:第一级第二级第三级第四级第五级3/23000A 010010101110100010000100000M,100010101111000000000000111101000101111001区域划分Si123456R(Si)1,2,3,4,5,62,4,632,4,61,2,3,4,5,66A(Si)1,51,2,4,51,3,51,2,4,51,51,2,4,5,6C(Si)1,52,432,41,56E(Si)36A(S3)A(S6)1,3,51,2,4,5,61,5所以系统无法划分为两个或两个以上相互独立的区域,即(S)
5、P 1,2,3,4,5,6。12M(P)3456级位划分110001023456111111010101000101011111100001要素集合Si123456124515R(Si)1,2,3,4,5,62,4,632,4,61,2,3,4,5,661,2,4,52,42,41,2,4,51,51,5A(Si)1,51,2,4,51,3,51,2,4,51,51,2,4,5,61,51,2,4,51,2,4,51,51,51,54/23C(Si)1,52,432,41,561,52,42,41,51,51,5E(Si)362415(P2)P L0L13,6P L0 L1L22,4P L0
6、L1 L2L31,5(P)L1,L2,L33,6,2,4,1,536M(L)2L241L35L131000116241500000100001110011100111111111136211001000100110011提取骨架矩阵3621L13M(L)6L22L311001000L13,M(L)1006L22110L311113621L13A M(L)I 6L22L31绘制多级递阶有向图00010000001000103624第一级第二级第三级1实用方法:51缩减矩阵M 236110002361111010100015/233M(L)62131001621000100,110011绘制多级递
7、阶有向图:3624第一级第二级第三级1522.请依据图 317 建立可达矩阵,并用简化方法建立其递阶结构模型。解:VVVVVVVVVVVV(V)V(V)AAA(A)AVAAVAP1P2P3P4P5P6P7P8P96/23123M 45678911010101009812010001009111111111300100100401010100500010000600011100700000100811111110001000191111111114M(L)62357814623570000000010000000110000001010000010010000101010001100010011
8、11001011111101绘制多级递阶有向图:98164第一级第二级第三级352第四级第五级77/2323.已知下面的系统可适矩阵,分别用规范方法与实用方法建立其递阶结构模型。1112030(1)405060702010100030010010400010005101011160010010171110203104(2)0050060070180234567810100001000000111000010100001011000101111110110110000001解:(1)规范方法:区域划分Si1234567R(Si)1,5,723,5,62,453,5,65,7A(Si)12,43,
9、641,3,5,6,73,61,7C(Si)123,6453,67E(Si)25A(S2)A(S5)2,41,3,5,6,7所以系统可划分为两个相互独立的区域,即(S)P1,3,5,6,7。1,P22,4,221P1 411 0M(P)30P2506070级位划分要素集合401000001001000030001010500111116000101070010001Si244R(Si)22,44A(Si)2,444C(Si)244E(Si)24(P1)L12L24P1 L0P1 L0 L18/23(P1)L1,L22,4要素集合Si1356713671R(Si)1,5,73,5,653,5,6
10、5,71,73,63,671A(Si)13,61,3,5,6,73,61,713,63,61,71C(Si)13,653,6713,63,671E(Si)53671(P2)P2 L0L15P1 L0 L1L23,6,7P1 L0 L1 L2L31(P2)L1,L2,L35,3,6,7,1L1L2L1L2L3221415030607010453671000000100000010000011100011100010010010011M(L)提取骨架矩阵M(L)L1L2L1L2L322141503060701040100000500111113000110060001100700000111202
11、10410,M(L)5003007001014537100000100000100001100010100001122041A M(L)I 50307010453710000000000000000100001000000109/23绘制多级递阶有向图2475316第一级第二级第三级(2)规范方法:区域划分Si12345678R(Si)1,2,421,2,3,42,42,4,52,4,5,6,7,82,4,5,7,88A(Si)1,31,2,3,4,5,6,731,3,4,5,6,75,6,766,76,7,8C(Si)12345678E(Si)28A(S2)A(S8)1,2,3,4,5,6,
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