SLLA661A April   2025  – June 2026 MCF8315A , MCF8315C , MCF8315C-Q1 , MCF8315D , MCF8316A , MCF8316C-Q1 , MCF8316D , MCF8329A , MCF8329A-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2System Requirements
  6. 3 MOTORSTUDIO GUI Installation
  7. 4Prerequisites to Run the Motor with MOTORSTUDIO
  8. 5Getting Started with MOTORSTUDIO
    1. 5.1 Home
    2. 5.2 SmartTune
    3. 5.3 Optimization Wizard
    4. 5.4 Motor Parameter Extraction Tool (MPET)
    5. 5.5 Closed Loop Tuning
    6. 5.6 Advanced Tuning
    7. 5.7 Register Map
      1. 5.7.1 Register read
    8. 5.8 Control Utilities
      1. 5.8.1 Control
        1. 5.8.1.1 EEPROM READ/WRITE
      2. 5.8.2 Faults
      3. 5.8.3 Charts
      4. 5.8.4 Logs
    9. 5.9 Other Utilities
      1. 5.9.1 Scripting Tool
      2. 5.9.2 Compare Tuning File Tool
  9. 6Spinning the motor
    1. 6.1 Connecting MCF83xx to the GUI
    2. 6.2 SmartTune Execution
    3. 6.3 Improving Current and Speed Regulation
    4. 6.4 Testing for Successful Startup Into Closed Loop
  10. 7Summary
  11. 8References
  12. 9Revision History

Motor Parameter Extraction Tool (MPET)

 Motor Parameter Extraction
                    Tool (MPET) Figure 5-5 Motor Parameter Extraction Tool (MPET)

The Motor Parameter Extraction Tool (MPET) is a device algorithm feature that assists in identifying motor electrical parameters, including phase resistance, phase inductance, BEMF constant, and speed loop coefficients (Kp and Ki).

To execute MPET, users must configure the motor startup parameters listed under the Motor Parameters section on the MPET page.

For MCF8329x devices, the following configurations must be established before running MPET:

i) Base current and CSA gain parameters based on the shunt resistor value

ii) Motor phase resistance and phase inductance

Users can select the parameters to be measured during MPET operation by choosing options under MPET Select.

Click the "Run MPET" command button to initiate motor parameter measurement.

Upon successful execution of MPET, the measured parameters are displayed in the MPET Result section. Users can select the "Write MPET Result To Shadow Registers" button to transfer the measured motor parameters into the device registers.

Note: MPET is a subset of the SmartTune feature. TI recommends using the SmartTune tool to identify motor parameters.