上例中: n=7,m=421=-1,2=-10,3=-7+j2,24=-7-j2 B1=0,P2=-6,P2=-8,p=-0.5+j,p3=-0.5-j2p=4+j3,D=-4-j3 将上述开环零点和极点尽可能准确标在S复平面上,习惯上用叉 号标记开环极点,用小圆圈标记开环零点,如下图: 6 2 4X p 10 xp1 Z p p上例中: 将上述开环零点和极点尽可能准确标在S复平面上, 习惯上用叉 号标记开环极点, 用小圆圈标记开环零点, 如下图: 0, 6, 8, 0.5 , 0.5 , 4 3, 4 3 7, 4; 1, 10, 7 2, 7 2 1 2 3 4 5 6 7 1 2 3 4 p p p p j p j p j p j n m z z z j z j = = − = − = − + = − − = − + = − − = = = − = − = − + = − − 0 p1 1 2 3 -6 p2 -8 p3 -10 z2 -1 z1 p4 p5 p6 p7 z3 z4 jω σ