SPRADQ5 March   2025 AM2612 , AM2612-Q1 , AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1 , AM263P2-Q1 , AM263P4 , AM263P4-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction of AC or Servo Drive Hot-Side Control Architecture
  5. 2PRU and FSI Implementation for Time Synchronization and Data Transmitting
    1. 2.1 Importance of Clock in Industrial Systems With MCUs
    2. 2.2 IEP Timer Interface
    3. 2.3 PRU_ICSSG Task Manger
    4. 2.4 Fast Serial Interface
    5. 2.5 Two-Chip System Scheme for Time Synchronization and Data Transmitting
      1. 2.5.1 Device 1 Configuration
        1. 2.5.1.1 Pad Configuration
        2. 2.5.1.2 Clock Source Configuration
        3. 2.5.1.3 IEP Timer Configuration
        4. 2.5.1.4 Task Manager Configuration
      2. 2.5.2 Device 2 Configuration
        1. 2.5.2.1 Pad Configuration
        2. 2.5.2.2 Clock Configuration
        3. 2.5.2.3 IEP Timer Configuration
        4. 2.5.2.4 TSR Configuration
        5. 2.5.2.5 Task Manager Configuration
  6. 3Verification
  7. 4Summary
  8. 5References

1 Introduction of AC or Servo Drive Hot-Side Control Architecture

The primary entities of an industrial motor drive are motor control, industrial communication and application to manage control and communication functions.

  • The motor control portion includes the Field-oriented Control (FOC) algorithm, the motor Pulse-Width Modulation (PWM) controller and the motor current and position feedback system components which provide the normal operation for the motor.
  • The industrial communication interface provides the real-time communication link and synchronized system timing with the field network.
  • The application provides the high-level control of the drive managing the overall drive communications and control functions. This can include configuration, startup or shutdown, status, operation, motion control and other management functions.

These three components of the industrial drive architecture can further be implemented in a variety of configurations. One of the architectures as shown in Figure 1-1 is a two-chip design with hot-side motor control which provides a single or multi-axis drive with multi-protocol field bus and real-time Ethernet, advanced application algorithms and control performance. The hot-side Micro-programmed Control Unit (MCU) is implemented to perform FOC control with a constant cycle time. A part of the cold-side MCU is implemented to decode angle and velocity information from the motor encoder. To receive the motor angle and velocity information in every cycle time, the timing needs to be deterministic and pre-configured to match the FOC control loop scheme.

Two-Chip Design With Hot-Side Motor Control ArchitectureFigure 1-1 Two-Chip Design With Hot-Side Motor Control Architecture