您可以使用时域和频域分析命令计算和可视化 SISO 和 MIMO 系统响应，如波特图、尼柯尔斯图、阶跃响应和冲激响应。您还可以提取系统特性，如上升时间和稳定时间、超调和稳定裕度。大多数线性分析命令都可以返回响应数据或生成响应图。要开始使用绘制命令，请参阅Plotting System Responses。要创建其属性可在命令行中自定义的绘图，请参阅绘制自定义。
|线性系统分析器||Analyze time and frequency responses of linear time-invariant (LTI) systems|
|Step response plot of dynamic system; step response data|
|Rise time, settling time, and other step-response characteristics|
|Impulse response plot of dynamic system; impulse response data|
|System response to initial states of state-space model|
|Plot simulated time response of dynamic system to arbitrary inputs; simulated response data|
|Compute linear response characteristics|
|Create periodic signals for simulating system response with
|Output and state covariance of system driven by white noise|
|Options for step or impulse responses|
|Bode plot of frequency response, or magnitude and phase data|
|Magnitude-only Bode plot of frequency response|
|Nyquist plot of frequency response|
|Nichols chart of frequency response|
|Superimpose Nichols chart on Nichols plot|
|Singular value plot of dynamic system|
|Evaluate system response over a grid of frequencies|
|Evaluate system response at specific frequency|
|Low-frequency (DC) gain of LTI system|
|Frequency response bandwidth|
|Peak gain of dynamic system frequency response|
|Crossover frequencies for specified gain|
|Pointwise peak gain of FRD model|
|Norm of linear model|
|Convert decibels (dB) to magnitude|
|Convert magnitude to decibels (dB)|
|创建绘图||Interactively create linear analysis response plots in the Live Editor|
|LTI System||Use linear time invariant system model object in Simulink|
|LPV System||对线性参数变化 (LPV) 系统进行仿真|
- Plotting System Responses
This example shows an overview of generating time-domain and frequency-domain response plots.
- Time-Domain Responses
Generate and visualize time-response data such as step response and impulse response.
- Time-Domain Characteristics on Response Plots
Visualize time-domain system characteristics such as settling time and overshoot on response plots.
- Numeric Values of Time-Domain System Characteristics
stepinfofunction to obtain numeric values of step response characteristics such as rise time, settling time, and overshoot.
- Response from Initial Conditions
Compute and plot the response of a state-space (
ss) model to specified initial state values.
- Import LTI Model Objects into Simulink
Use the LTI System block to import linear system model objects into Simulink®.
- Frequency-Domain Responses
Generate and visualize frequency-response data such as Bode plots and Nichols plots.
- Frequency-Domain Characteristics on Response Plots
Visualize frequency-domain system characteristics such as peak response on plots.
- Numeric Values of Frequency-Domain Characteristics of SISO Model
Obtain numeric values of frequency-domain characteristics such as peak gain, dc gain, and system bandwidth.
- Joint Time-Domain and Frequency-Domain Analysis
Compare multiple types of responses side by side, including both time-domain and frequency-domain responses, using the Linear System Analyzer app.
- 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.
- Analysis of Systems with Time Delays
The time and frequency responses of delay systems can have features that can look odd to those only familiar with delay-free LTI analysis.
- Analyzing Control Systems with Delays
Many processes involve dead times, also referred to as transport delays or time lags. Controlling such processes is challenging because delays cause phase shifts that limit the control bandwidth and affect closed-loop stability.
- Analyzing the Response of an RLC Circuit
Analyze the time and frequency responses of a second-order system.