Connect Models

NI MAX Control Design Steps

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Connect Models

Performs different types of linear system interconnections. You can build large system models by connecting smaller system models together.

Parameter	Description
Resulting Model	Displays the mathematical expression that defines the model you create. If you select a state-space model, Resulting Model displays the matrices of the state-space model.
Input Data	Contains the following options: Model 1—Specifies the first system model the Control Design Assistant uses to create the connected model. Model 2—Specifies the second system model the Control Design Assistant uses to create the connected model. Sampling time 1 (s)—Displays the sampling time of the model you select in Model 1. This option appears if Model 1 is a discrete-time model. Sampling time 2 (s)—Displays the sampling time of the model you select in Model 2. This option appears if Model 2 is a discrete-time model.
Configuration	Contains the following option: Operation—Specifies the method the step uses to connect the models you specify on the Input Data tab. You can select one of the following options: Series—Connects Model 1 and Model 2 such that the series model represents the two input models in series topology. The system models must be either continuous-time models or have the same sampling time if they are discrete-time models. Feedback—Connects Model 1 with Model 2 in feedback configuration. The system models must be either continuous-time models or have the same sampling time if they are discrete-time models. Parallel—Connects Model 1 and Model 2 such that the parallel model represents the two input models in parallel topology. The system models must be either continuous-time models or have the same sampling time if they are discrete-time models. Series + Unit Feedback—Applies the series operation to the two input models and closes the system using unity feedback. The resulting model is a system of Model 1 and Model 2 in series in a feedback configuration. Feedback Sign—Specifies the sign of the feedback loop. This option appears when you select an Operation of Feedback. Parallel Sign 1—Specifies the sign of the first input model in the parallel structure. This option appears when you select an Operation of Parallel. Parallel Sign 2—Specifies the sign of the second input model in the parallel structure. This option appears when you select an Operation of Parallel. Series Sign—Specifies the sign of the unit feedback loop. This option appears when you select an Operation of Series + Unit Feedback.

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