稳定性分析
增益和相位裕度,极点和零点位置
稳定性是控制系统的标准要求,它可以避免失控和设备损坏。对于线性反馈系统,可以通过查看闭环传递函数的极点来评估稳定性。
增益和相位裕度衡量在增益穿越频率下会导致稳定性下降的增益或相位变化量。这两个量一起给出闭环稳定性的安全裕度估计值。稳定裕度越小,稳定性就越脆弱。
函数
极点和零点位置
pole | Poles of dynamic system |
zero | SISO 动态系统的零点和增益 |
damp | Natural frequency and damping ratio |
dsort | Sort discrete-time poles by magnitude |
esort | Sort continuous-time poles by real part |
tzero | Invariant zeros of linear system |
pzmap | 动态系统的零极点图 |
iopzmap | Plot pole-zero map for input-output pairs of dynamic system using default options |
精选示例
Assessing Gain and Phase Margins
Examine the effect of stability margins on closed-loop response characteristics of a control system.
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