V2EX stability margin

Stability Margin

释义 Definition

稳定裕度 / 稳定余量:在控制、航空航天、结构或电力等工程语境中,指系统在保持稳定的前提下,仍能承受参数变化、扰动或不确定性增加的“余地”。稳定裕度越大,系统通常越不容易因外界变化而失稳。(相关概念常见于增益裕度相位裕度等指标;在其他语境中也可能有不同具体定义。)

发音 Pronunciation (IPA)

/stblti mrdn/

例句 Examples

The controller was tuned to increase the stability margin.
控制器经过整定以提高稳定裕度。

Even with sensor noise and temperature drift, the system maintained a comfortable stability margin, avoiding oscillation and loss of control.
即使存在传感器噪声和温度漂移,系统仍保持了较充足的稳定裕度,从而避免振荡和失控。

词源 Etymology

stability 来自拉丁语 stabilis(“稳固的”),与“站稳、固定”之意相关;margin 来自拉丁语 margo(“边缘、边界”)。合起来的 stability margin 字面义就是“稳定的边界余量”,引申为“距离失稳边界还有多远的安全余地”。

相关词 Related Words

文学与著作 Literary Works

  • Modern Control Engineering(Katsuhiko Ogata)常以“增益裕度/相位裕度”等形式讨论稳定裕度思想
  • Modern Control Systems(Richard C. Dorf & Robert H. Bishop)在频域与鲁棒性章节中涉及稳定裕度相关指标
  • Multivariable Feedback Control: Analysis and Design(Sigurd Skogestad & Ian Postlethwaite)以鲁棒稳定性与裕度为核心主题之一
  • Aircraft Control and Simulation(Brian L. Stevens & Frank L. Lewis)在飞控稳定性与裕度分析中使用类似术语与概念
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