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响应计算和可视化

R2026a

分析时间响应图和频率响应图上的模型响应

您可以使用 System Identification Toolbox™ 函数绘制并可视化动态系统模型的响应。此外，您还可以通过绘图选项和属性来自定义绘图。

函数

计算响应

辨识模型

`sim`	Simulate response of identified model
`simOptions`	Option set for `sim`
`findstates`	Estimate initial states of model
`findstatesOptions`	Option set for `findstates`
`spectrum`	绘制或返回时间序列模型的输出功率谱或线性输入/输出模型的扰动谱
`data2state`	Map past data to states of state-space and nonlinear ARX models

动态系统模型

`bode`	动态系统的波特频率响应
`nyquist`	动态系统的奈奎斯特响应
`step`	动态系统的阶跃响应
`stepinfo`	上升时间、稳定时间和其他阶跃响应特征
`impulse`	动态系统的冲激响应图；冲激响应数据
`lsim`	计算动态系统对任意输入的时间响应仿真数据
`lsiminfo`	计算线性响应特征
`pzmap`	动态系统的零极点图
`iopzmap`	使用默认选项绘制动态系统的 I/O 对组的零极点图

绘制响应曲线

辨识模型

spectrumplot Plot disturbance spectrum of linear identified models

动态系统模型

`bodeplot`	Plot Bode frequency response of dynamic system
`bodemag`	Magnitude-only Bode plot of frequency response
`nyquistplot`	Plot Nyquist response of dynamic system
`stepplot`	Plot step response of dynamic system
`impulseplot`	Plot impulse response of dynamic system
`lsimplot`	Plot simulated time response of dynamic system to arbitrary inputs
`pzplot`	Plot pole-zero map of dynamic system
`iopzplot`	Plot pole-zero map for input-output pairs of dynamic system
`addResponse`	Add dynamic system response to existing response plot (自 R2024b 起)
`showConfidence`	在响应图上显示已辨识模型的置信边界
`zoomcp`	将奈奎斯特图放大至临界点附近区域

可视化选项

`spectrumoptions`	Option set for `spectrumplot`
`RespConfig`	(Not recommended) Options for step or impulse responses (自 R2023a 起)
`bodeoptions`	Plot options for `bodeplot`
`nyquistoptions`	Create list of Nyquist plot options
`timeoptions`	Create list of time plot options
`pzoptions`	Options for pole-zero plots
`getoptions`	Get options for `idplot` and `spectrumplot`
`setoptions`	Set options for `idplot` and `spectrumplot`

工具箱设置

identpref 配置 System Identification Toolbox 设置

属性

绘图配置

ImpulsePlot Properties	Access impulse plot properties (自 R2024b 起)
LSimPlot Properties	Access simulated time response plot properties (自 R2024b 起)
StepPlot Properties	Access step plot properties (自 R2024b 起)
BodePlot Properties	Access Bode plot properties (自 R2024b 起)
NyquistPlot Properties	Access Nyquist plot properties (自 R2024b 起)
HSVPlot Properties	Access Hankel singular value plot properties (自 R2024b 起)
IOPZPlot Properties	Access input-output pole-zero plot properties (自 R2024b 起)
PZPlot Properties	Access pole-zero plot properties (自 R2024b 起)

主题

Analyzing MIMO Models
In analysis plots of multiple-input, multiple output LTI models, there are plot tools for selecting subsystems and grouping I/O pairs.
使用属性编辑器自定义线性分析图
交互式地设置响应图的坐标轴标签和边界、字体、网格以及其他属性。
Specify Toolbox Settings for Linear Analysis Plots
Set linear analysis plot settings that persist between MATLAB^® sessions.