V2EX step response

Step Response

释义 Definition

阶跃响应:在控制系统与信号处理里,指系统在输入从一个稳定值突然跳变(阶跃)到另一个值后,输出随时间变化的反应过程。常用于评估系统的动态性能(如上升时间、超调量、稳定时间等)。(该术语在不同语境下也可泛指“对突然变化的反应”。)

发音 Pronunciation (IPA)

/stp rspns/; /stp rspns/

例句 Examples

We measured the step response of the motor.
我们测量了电机的阶跃响应。

A fast step response with minimal overshoot usually indicates a well-tuned controller.
快速且超调很小的阶跃响应通常表明控制器调参较好。

词源 Etymology

step(阶跃、突变) + response(响应、反应) 组成。这里的 step 指“阶跃输入”(一种从0到1或从某一值到另一值的突然变化的标准测试信号),response 指系统对该输入的输出变化。该搭配在20世纪控制理论与工程实践中逐渐固定为常用术语。

相关词 Related Words

文学/作品用例 Literary Works

  • Modern Control Engineering(Katsuhiko Ogata):以“step response”作为分析系统动态指标的核心概念之一。
  • Feedback Control of Dynamic Systems(Franklin, Powell, Emami-Naeini):多处用阶跃响应讲解性能指标与控制器整定。
  • Automatic Control Systems(Benjamin C. Kuo):用阶跃响应引入瞬态过程、稳定误差等评估方法。
  • Control System Design: An Introduction to State-Space Methods(strm & Murray):在系统设计与性能分析章节中讨论阶跃响应与时域指标。
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