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自 动 控 制 原 理第 四 章 复 域 分 析 法 - 根 轨 迹 法(3) 实 轴 上 根 轨 迹 区 段 (0,1),(-∞,-1)(4) 渐 近 线 :ϕa(2 k+ 1)π (2 k+1)π= = = ± π /3,n−m4−1n∑p−m∑ii= 1 j=1zj{ π}σa=n−m1 + ( − 2+ j2 3) +( − 2− j2 3) − ( −1) 2= = −4−1 3

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