Simulink Control Design™ - MathWorks

of the response to the left of the input delay marker (the τ Adjustor) comes purely from initial conditions. The portion to the ...

Design Controller for Power Electronics Model Using Frequency Response Data This example shows how to design a PID controller fo ...

In this model, a MOSFET driven by a pulse-width modulation (PWM) signal is used for switching. The output voltage should be regu ...

In the Linear Analysis Tool, on the Linear Analysis tab, in the Operating Point drop- down list, select Take Simulation Snapshot ...

Click Take Snapshots. The software simulates the model and creates an operating point that contains the input and state values o ...

To initialize the model with the computed operating point, double-click op_snapshot1. 7 PID Controller Tuning ...

In the Edit dialog box, click Initialize model. Design Controller for Power Electronics Model Using Frequency Response Data ...

In the Initialize Model dialog box, select MATLAB Workspace, and click OK. The software exports the operating point to the MATLA ...

In the Specify fixed sample time dialog box, specify a Sample time of 5e-6 seconds. Click OK. In the Create sinestream input wit ...

In the Add frequencies dialog box, specify 15 logarithmically-spaced frequencies ranging from 50 Hz to 5 kHz. Click OK To ensure ...

Leave all other sinestream settings at their default values. To create the sinestream signal, click OK. Design Controller for Po ...

The model has time-varying line and load disturbances modeled as step functions that will interfere with the frequency response ...

The software estimates the frequency response and displays the result in Bode Plot 1. The frequency response is plotted using di ...

7 PID Controller Tuning ...

Specify Controller Structure Before tuning a PID Controller block using PID Tuner, you must first specify your controller struct ...

In the Obtain plant model dialog box, select Importing an LTI System, and in the table, select estsys1. 7 PID Controller Tuning ...

Click OK. Since you are using an estimated frequency response, PID Tuner cannot plot a step response. To view the frequency resp ...

Close the Step Plot document. The Bode plot shows a block response (dashed line) and a tuned response (solid line). The block re ...

block. The tuned response is the open-loop response using the tuned PID gains in PID Tuner. To tune the controller in terms of b ...

To view the tuned controller parameters and performance metrics, including the gain and phase margins, click Show Parameters. Th ...