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自动控制原理第五章频域分析法 - 频率法1. 相位裕量 γ:定义为 180°+ 开环幅相曲线幅值为 1 时的相角。γ = 180 o +ϕ ( ω) co G( j) H( j)γ = 180 +∠ jω jω相位裕度的物理含义 : 如果系统对频率信号 ω c 相位再滞后 γ 值 , 系统就处于临界稳定状态。 γ值越大 , 其系统的稳定程度越高 ,工程上一般要求 γ≥40 ° (40 ° ~60 ° )。cc
自动控制原理第五章频域分析法 - 频率法2. 幅值裕量 h:开环幅相曲线与负实轴交点处的模值|G(jω g )H(jω g )| 的倒数。1h =G jωH jω( ) ( )gg幅值裕量 h 的物理含义 : 如果系统的开环放大系数增大到原来的 h 倍 , 则闭环系统就进入临界稳定状态。
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自动控制原理第一章
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自动控制原理三、反
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自动控制原理第二章
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自动控制原理5. 正弦
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自动控制原理三、拉
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自动控制原理二、对
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自动控制原理三、理
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自动控制原理本章小
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自动控制原理第三章
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自动控制原理2. 速度
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自动控制原理则 Th( t) 1
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自动控制原理闭环传
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自动控制原理由于2 dn
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自动控制原理所以cosdt
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自动控制原理5. 振荡
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自动控制原理2. 测速
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自动控制原理各阶赫
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自动控制原理3. 劳思 (
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自动控制原理(2) 劳思
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自动控制原理由稳定
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自动控制原理求出 EN
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自动控制原理第四章
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自动控制原理证明 :
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自动控制原理会合角
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自动控制原理(7) 分离
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自动控制原理解之 ,
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自动控制原理例第四
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自动控制原理式中第
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自动控制原理二、主
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自动控制原理一阶系
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自动控制原理常规根
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自动控制原理开环极
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自动控制原理第五章
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自动控制原理11+ω T2 2
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自动控制原理动态数
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自动控制原理三、微
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自动控制原理五、一
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Page 460 and 461: 自动控制原理第五章
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自动控制原理第六章
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自动控制原理例第六
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自动控制原理第七章
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自动控制原理二、数
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自动控制原理7.2 信号
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自动控制原理系数第
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自动控制原理三、Z 变
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自动控制原理例试求
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自动控制原理7. 终值
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自动控制原理查表 7-1
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自动控制原理也可由
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自动控制原理一、稳
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自动控制原理次要带j
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自动控制原理由变换
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自动控制原理四、稳
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自动控制原理第八章
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自动控制原理2. 状态
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自动控制原理7. 状态
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自动控制原理1. 能控
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自动控制原理2. 能观
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自动控制原理二、传
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自动控制原理本章小
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