Interconnexion des modèles
Connexions séries, parallèles et de rétroaction ; constitution d’un diagramme de bloc
L’interconnexion des modèles de composants vous permet de construire des modèles de systèmes de contrôle. Vous pouvez conceptualiser votre système de contrôle sous la forme d’un diagramme de bloc contenant plusieurs composants interconnectés, telles qu’un système physique et un contrôleur connecté dans une configuration de rétroaction. L'arithmétique des modèles ou les commandes d'interconnexion vous permettent de combiner les modèles de chacune de ces composants en un modèle unique représentant l'ensemble du diagramme de bloc.
Fonctions
feedback | Feedback connection of multiple models |
connect | Block diagram interconnections of dynamic systems |
sumblk | Summing junction for name-based interconnections |
series | Connexion en série de deux modèles |
parallel | Parallel connection of two models |
append | Group models by appending their inputs and outputs |
blkdiag | Block-diagonal concatenation of models |
imp2exp | Convert implicit linear relationship to explicit input-output relation |
inv | Invert dynamic system models |
ctranspose | Conjugate dynamic system model |
lft | Generalized feedback interconnection of two models (Redheffer star product) |
connectOptions | Options for the connect command |
Rubriques
Fondamentaux des interconnexions de modèles
- Why Interconnect Models?
Interconnecting models of system components allows you to construct models of control systems. - Connecting Models
This example shows how to model interconnections of LTI systems, from simple series and parallel connections to complex block diagrams. - Numeric Model of SISO Feedback Loop
Interconnect numeric LTI models to build a single model of a closed-loop system. - Control System Model with Both Numeric and Tunable Components
Interconnect fixed components and tunable components to build a tunable control system model. - Multi-Loop Control System
Build arbitrary block diagrams with any number of control loops by interconnecting models using the connect command. - MIMO Control System with Fixed and Tunable Components
This example shows how to build a MIMO control system using connect to build a dynamic system model representing a block diagram with both fixed components (Numeric Linear Time Invariant (LTI) Models) and tunable components (Control Design Blocks). - MIMO Feedback Loop
Obtain the closed-loop response of a MIMO feedback loop three different ways. - Utilisation de la commande FEEDBACK pour fermer les boucles de rétroaction
Cet exemple vous explique pourquoi vous devez toujours utiliser la commande FEEDBACK pour fermer les boucles de rétroaction.
Points d’analyse
- Mark Analysis Points in Closed-Loop Models
Insert analysis points at locations of interest when you build control system models. Use analysis points for extracting system responses from the model. - Control System with Multichannel Analysis Points
Build a control-system model with analysis points for extracting responses at different points in the system.
En savoir plus sur les interconnexions des modèles
- Catalog of Model Interconnections
Block diagram connections correspond to model interconnection commands or arithmetic expressions. - How the Software Determines Properties of Connected Models
When you interconnect models, the resulting model’s properties depend on the properties of the models you are connecting. - Rules That Determine Model Type
Precedence rules determine the resulting model type when you interconnect models of different types. - Recommended Model Type for Building Block Diagrams
Choice of model type can affect numerical accuracy when you interconnect models. - Preventing State Duplication in System Interconnections
This example shows guidelines for building minimum-order models of LTI system interconnections.