SPRUIK4A September   2018  – June 2019 TMS320F280021 , TMS320F280021-Q1 , TMS320F280023 , TMS320F280023-Q1 , TMS320F280023C , TMS320F280025 , TMS320F280025-Q1 , TMS320F280025C , TMS320F280025C-Q1 , TMS320F280040-Q1 , TMS320F280040C-Q1 , TMS320F280041 , TMS320F280041-Q1 , TMS320F280041C , TMS320F280041C-Q1 , TMS320F280045 , TMS320F280048-Q1 , TMS320F280048C-Q1 , TMS320F280049 , TMS320F280049-Q1 , TMS320F280049C , TMS320F280049C-Q1 , TMS320F28075 , TMS320F28075-Q1 , TMS320F28076 , TMS320F28374D , TMS320F28374S , TMS320F28375D , TMS320F28375S , TMS320F28375S-Q1 , TMS320F28376D , TMS320F28376S , TMS320F28377D , TMS320F28377D-Q1 , TMS320F28377S , TMS320F28377S-Q1 , TMS320F28378D , TMS320F28378S , TMS320F28379D , TMS320F28379D-Q1 , TMS320F28379S

 

  1.   C2000 Software Frequency Response Analyzer (SFRA) Library and Compensation Designer in SDK Framework
    1.     Trademarks
    2. 1 Introduction
    3. 2 Installing the SFRA Library
      1. 2.1 SFRA Library Package Contents
      2. 2.2 How to Install the SFRA Library
    4. 3 Module Summary
      1. 3.1 SFRA Library Function Summary
      2. 3.2 Principle of Operation
      3. 3.3 Per Unit Format
      4. 3.4 Floating Point (Singe Precision)
        1. 3.4.1 Object Definition
        2. 3.4.2 Module Interface Definition
        3. 3.4.3 Adding SFRA Library to the Project
        4. 3.4.4 Adding Support for SFRA GUI
      5. 3.5 Script for Importing Frequency Response and Designing Compensation
      6. 3.6 SFRA GUI Options and How to Run
    5. 4 Compensation Designer
      1. 4.1 Launching Compensation Designer
        1. 4.1.1 Standalone From SFRA GUI Folder
        2. 4.1.2 From Solution Adapter Page
      2. 4.2 Compensation Style and Number
    6. 5 Case Study
      1. 5.1 Plant TF Extraction
      2. 5.2 Designing Compensator Using Compensation Designer
      3. 5.3 OL Measurement
      4. 5.4 Comparing SFRA Measured Frequency Response Versus Modeled
    7. 6 Running Software Test Bench Example for SFRA
    8. 7 Using SFRA Without SFRA GUI Integration
    9. 8 FAQ
  2.   Revision History

4 Compensation Designer

TI’s Compensation Designer provides an easy GUI interface, to calculate the coefficients that are needed to be programmed onto the micro-controller to implement a compensator as part of a closed loop system. The GUI lets the user select different compensator styles like PID, Two Pole Two Zero, and so forth, and allows the user to save up to five compensator values.

The GUI displays the Plant, the Open Loop and the Compensator Frequency Response. The Pole and Zeroes of the compensator, are marked on the Open Loop Curve on the GUI using a cross and circle, respectively. Critical values such as open loop gain crossover frequency (Folg_cf), Phase Margin and Gain Margin are displayed on the GUI at the bottom, and a label showing “Stable Loop” and “UnStable Loop” is displayed if the system has healthy Bandwidth, Phase Margin and Gain Margin.

For Plant frequency response, depending upon where the Compensation Designer is invoked from, the user can select to use the mathematical model of the power stage or the experimental data gathered using SFRA, to design the compensator.