模型互连

串联、并联和反馈连接；模块图构建

您可以通过互联组件模型来构造控制系统的模型。您可以将控制系统概念化为一个包含多个互连组件的模块图，例如在反馈配置中连接的被控对象和控制器。使用模型算术或互连命令，您可以将上述每个组件模型组合成一个表示整个模块图的模型。

函数

`feedback`	Feedback connection of multiple models
`connect`	Block diagram interconnections of dynamic systems
`sumblk`	Summing junction for name-based interconnections
`series`	Series connection of two models
`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

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
Build a MIMO control system with both fixed and tunable components.
MIMO Feedback Loop
Obtain the closed-loop response of a MIMO feedback loop three different ways.
Using FEEDBACK to Close Feedback Loops
This example shows why you should always use FEEDBACK to close feedback loops.

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.

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.