梅森公式例子.ppt
,三(15分)系统的方框图如图所示,用Mason公式求系统的传递函数,(要求有主要过程,只给出结果的要扣分),R(s),C(s),R(s),C(s),G8,G9,G1,G2,G3,G4,G5,G6,G7,1,1,-H1,-H2,-H3,第一条前向通路增益 P1=G1 G2 G3 G4 G5 G6,1,R(s),C(s),G8,G9,G1,G2,G3,G4,G5,G6,G7,1,1,-H1,-H2,-H3,第一条前向通路增益 P1=G1 G2 G3 G4 G5 G6,第二条前向通路增益 P1=G1 G2 G8,1,R(s),C(s),G8,G9,G1,G2,G3,G4,G5,G6,G7,1,1,-H1,-H2,-H3,第一条前向通路增益 P1=G1 G2 G3 G4 G5 G6,第二条前向通路增益 P2=G1 G2 G8,1,第三条前向通路增益 P3=G1 G7 G4 G5 G6,R(s),C(s),G8,G9,G1,G2,G3,G4,G5,G6,G7,1,1,-H1,-H2,-H3,1,第一条前向通路增益 P1=G1 G2 G3 G4 G5 G6,第二条前向通路增益 P2=G1 G2 G8,第三条前向通路增益 P3=G1 G7 G4 G5 G6,第四条前向通路增益 P4=G1 G2 G3 G4 G9 G6,R(s),C(s),G8,G9,G1,G2,G3,G4,G5,G6,G7,1,1,-H1,-H2,-H3,第一条前向通路增益 P1=G1 G2 G3 G4 G5 G6,第二条前向通路增益 P2=G1 G2 G8,第三条前向通路增益 P3=G1 G7 G4 G5 G6,第四条前向通路增益 P4=G1 G2 G3 G4 G9 G6,1,第五条前向通路增益 P5=G1 G7 G4 G9 G6,还有没有前向通路啦?,R(s),C(s),G8,G9,G1,G2,G3,G4,G5,G6,G7,1,1,-H1,-H2,-H3,1,第一条回路增益 L1=-G4 H1注意:要考虑负号!,R(s),C(s),G8,G9,G1,G2,G3,G4,G5,G6,G7,1,1,-H1,-H2,-H3,1,第一条回路增益 L1=-G4 H1,第二条回路增益 L1=-G6 H2,R(s),C(s),G8,G9,G1,G2,G3,G4,G5,G6,G7,1,1,-H1,-H2,-H3,1,第一条回路增益 L1=-G4 H1,第二条回路增益 L1=-G6 H2,第三条回路增益 L3=-G2 G3 G4 G5 G6 H3,R(s),C(s),G8,G9,G1,G2,G3,G4,G5,G6,G7,1,1,-H1,-H2,-H3,1,第一条回路增益 L1=-G4 H1,第二条回路增益 L1=-G6 H2,第三条回路增益 L3=-G2 G3 G4 G5 G6 H3,第四条回路增益 L4=-G2 G3 G4 G9 G6 H3,R(s),C(s),G8,G9,G1,G2,G3,G4,G5,G6,G7,1,1,-H1,-H2,-H3,1,第一条回路增益 L1=-G4 H1,第二条回路增益 L1=-G6 H2,第三条回路增益 L3=-G2 G3 G4 G5 G6 H3,第四条回路增益 L4=-G2 G3 G4 G9 G6 H3,第五条回路增益 L5=-G7 G4 G5 G6 H3,R(s),C(s),G9,G1,G2,G3,G4,G5,G6,G7,1,1,-H1,-H2,-H3,1,第一条回路增益 L1=-G4 H1,第二条回路增益 L1=-G6 H2,第三条回路增益 L3=-G2 G3 G4 G5 G6 H3,第四条回路增益 L4=-G2 G3 G4 G9 G6 H3,第五条回路增益 L5=-G7 G4 G5 G6 H3,第六条回路增益 L6=-G7 G4 G9 G6 H3,G8,R(s),C(s),G9,G1,G2,G3,G4,G5,G6,G7,1,1,-H1,-H2,-H3,1,第一条回路增益 L1=-G4 H1,第二条回路增益 L1=-G6 H2,第三条回路增益 L3=-G2 G3 G4 G5 G6 H3,第四条回路增益 L4=-G2 G3 G4 G9 G6 H3,第五条回路增益 L5=-G7 G4 G5 G6 H3,第六条回路增益 L6=-G7 G4 G9 G6 H3,G8,第七条回路增益 L7=-G2 G8 H3,R(s),C(s),G9,G1,G2,G3,G4,G5,G6,G7,1,1,-H1,-H2,-H3,1,G8,两两互不接触(没有公共的节点)回路增益乘积,L1 L2=G4 G6 H1 H2,R(s),C(s),G9,G1,G2,G3,G4,G5,G6,G7,1,1,-H1,-H2,-H3,1,G8,两两互不接触(没有公共的节点)回路增益乘积,L1 L2=G4 G6 H1 H2,L1 L7=G2 G4 G8 H1 H3,R(s),C(s),G9,G1,G2,G3,G4,G5,G6,G7,1,1,-H1,-H2,-H3,1,G8,两两互不接触(没有公共的节点)回路增益乘积,L1 L2=G4 G6 H1 H2,L1 L7=G2 G4 G8 H1 H3,L2 L7=G2 G6 G8 H2 H3,R(s),C(s),G9,G1,G2,G3,G4,G5,G6,G7,1,1,-H1,-H2,-H3,1,G8,三三互不接触回路增益乘积,L1 L2 L7=-G2 G4 G6 G8H1 H2 H3,=1-(L1+L2+L3+L4+L5+L6+L7)+L1 L2+L1 L7+L2 L7-L1 L2 L7=1+G4 H1+G6 H2+G2 G3 G4 G5 G6 H3+G2 G3 G4 G9 G6 H3+G7 G4 G5 G6 H3+G7 G4 G9 G6 H3+G2 G8 H3+G4 G6 H1 H2+G2 G4 G8 H1 H3+G2 G6 G8 H2 H3+G2 G4 G6 G8H1 H2 H3,R(s),C(s),G9,G1,G2,G3,G4,G5,G6,G7,1,1,-H1,-H2,-H3,1,G8,R(s),C(s),G9,G1,G2,G3,G4,G5,G6,G7,1,1,-H1,-H2,-H3,1,G8,第一条前向通路增益 P1=G1 G2 G3 G4 G5 G6,第一条前向通路与各个回路都接触,特征式的余因子 1=1,R(s),C(s),G9,G1,G2,G3,G4,G5,G6,G7,1,1,-H1,-H2,-H3,1,G8,第二条前向通路增益 P2=G1 G2 G8,第二条前向通路与回路L1及L2不接触,与其它回路都接触,所以特征式的余因子 2=1-(L1+L2)+L1L2=1+G4 H1+G6 H2+G4 G6 H1 H2,R(s),C(s),G9,G1,G2,G3,G4,G5,G6,G7,1,1,-H1,-H2,-H3,1,G8,第三条前向通路增益 P3=G1 G7 G4 G5 G6,第三条前向通路与各个回路都接触,特征式的余因子 3=1,R(s),C(s),G9,G1,G2,G3,G4,G5,G6,G7,1,1,-H1,-H2,-H3,1,G8,第四条前向通路增益 P4=G1 G2 G3 G4 G9 G6,第四条前向通路与各个回路都接触,特征式的余因子 4=1,R(s),C(s),G9,G1,G2,G3,G4,G5,G6,G7,1,1,-H1,-H2,-H3,1,G8,第五条前向通路增益 P5=G1 G7 G4 G9 G6,第五条前向通路与各个回路都接触,特征式的余因子 5=1,R(s),C(s),G9,G1,G2,G3,G4,G5,G6,G7,1,1,-H1,-H2,-H3,1,G8,R(s),C(s),G8,G9,G1,G2,G3,G4,G5,G6,G7,1,1,-H1,-H2,-H3,1,