Analyse des domaines temporels et fréquentiels
Les commandes d’analyse des domaines temporels et fréquentiels vous permettent de calculer et de visualiser les réponses des systèmes SISO et MIMO, telles que les diagrammes de Bode, les diagrammes de Nichols, les réponses indicielles et les réponses impulsionnelles. Vous pouvez également extraire les caractéristiques du système, telles que le temps de montée et le temps de stabilisation, le dépassement et les marges de stabilité. Pour commencer à tracer les réponses, consultez Plotting System Responses. Pour plus d’informations sur la personnalisation des tracés de réponse, consultez Personnalisation du tracé.
Fonctions
Applications
| Linear System Analyzer | Analyze time-domain and frequency-domain responses of linear time-invariant (LTI) systems |
Outils
| Linear Simulation Tool | Specify input signals and initial conditions for simulating linear models with arbitrary input signals and initial conditions |
Tâches du Live Editor
| Créer un tracé | Interactively create linear analysis response plots in the Live Editor (depuis R2022b) |
Blocs
| LTI System | Utilisez un objet de modèle de système linéaire fixe dans le temps dans Simulink |
Rubriques
Fondamentaux des graphiques d'analyse
- Plotting System Responses
This example shows an overview of generating time-domain and frequency-domain response plots.
Analyse du domaine temporel
- 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
Use thestepinfofunction to obtain numeric values of step response characteristics such as rise time, settling time, and overshoot.
Analyse du domaine fréquentiel
- 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.
Application Linear System Analyzer
- 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.
Systèmes avec retards
- Analyze Dynamic 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. - Analyze 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. - Validate Simulation Results for Models with Internal Delays
Validate the accuracy of simulations with internal delays by varying sample time. (depuis R2026a)
Informations connexes
Sélection d՚exemples
Analyse de la réponse d’un circuit RLC
Analysez les réponses temporelles et fréquentielles d’un système de deuxième ordre.
Use Linearization Offsets to Help Compare Nonlinear and Linearized Responses
Use offsets from linearization to facilitate the comparison of the nonlinear and linearized responses of a Simulink model.
Ressources pédagogiques
Analyse de la fonction de transfert des systèmes dynamiques
Découvrir comment calculer des fonctions de transfert et utiliser les pôles, les zéros et les diagrammes de Bode pour les analyser.
