Quick Start — Estimating Model Parameters

In this quick start, you get an overview of the typical tasks for estimating model parameters using the Control and Estimation Tools Manager GUI:

1. Start a parameter estimation task.

2. Import estimation and validation data sets.

3. Select parameters to estimate.

4. Estimate the parameters from the estimation data.

5. Validate the estimated parameters using the validation data set.

Prerequisites for parameter estimation include:

• Simulink model that contains inport or outport blocks, or signal logging

  For more information, see Model Requirements for Importing Data in the Simulink Design Optimization User's Guide.

• Transient data in the MATLAB workspace

To estimate model parameters:

1. Start a parameter estimation task by selecting Tools > Parameter Estimation in the Simulink model window.

   

2. Import the input and output data for estimating and validating model parameters.

   1. Select the Transient Data node, and click New.

   2. Select the New Data node.

   3. In the Input Data tab, select the Data cell corresponding to the model channel, and click Import. Select the variable to import in the Data Import dialog box.

      

   4. Select the Time /Ts cell, and click Import. Select the time vector to import in the Data Import dialog box.

   5. In the Output Data tab, repeat steps c–d to import the output data and time vector.

   6. Repeat steps a–d to import the validation data set.

      

      For more information, see Import Data (GUI) in the Simulink Design Optimization User's Guide.

3. Specify parameters to estimate by selecting the Variables node, and clicking Add. Select the parameters in the Select Parameters dialog box.

   

   For more information, see Specify Parameters to Estimate (GUI) in the Simulink Design Optimization User's Guide.

4. Estimate the parameters.

   1. Select the Estimation node, and click New.

   2. Select the New Estimation node.

   3. In the Data Sets tab, select the estimation data set.

      

   4. In the Parameters tab, select the parameters to estimate.

      

   5. In the Estimation tab, begin estimation by clicking Start.

      

   6. In the Parameters tab, examine the estimated parameter values. The Simulink model also gets updated with the estimated parameter values.

      

   For more information, see Estimate Parameters (GUI) in the Simulink Design Optimization User's Guide.

5. Validate the estimated parameters.

   1. Select the Validation node, and click New.

   2. Select the New Validation node.

   3. Configure the validation plots and the validation data set.

      

      For more information, see Validate Parameters (GUI) in the Simulink Design Optimization User's Guide.

See Also: Estimate Parameters from Measured Data Using the GUI

Supported Data

Prepare Data for Parameter Estimation Using the GUI

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