/BLDC_ESC

Adventures with controlling Brushless DC motors via an MSP430 based ESC

Primary LanguageCMIT LicenseMIT

MSP430 Brushless DC Motor Electronic Speed Controller

Development of an MSP430 based electronic speed controller.

  • Controls a BLDC electric motor for speed/torque
  • Trapezoidal control scheme (6 Step Commutation)

Background

  • Electronic Speed Control (ESC) is an electronic circuit that controls and regulates the speed of an electric motor.
  • SIMONK ESCs are commonly used for applications such as quadcopters or RC cars
  • The purpose of this project is to develop an MSP430 based ESC which replicates the functionality of an off the shelf controller

Hardware Architecture

  • Current implementation:

    • HW Revision 2
    • Alt text

  • Revision History

    • Revision 2
      • 1 MSP430F5529 PCBA
      • 1 LHI 2212 920KV Brushless Motor
      • 6 IRLR120N MOSFET N Channel
      • 3 IR2104S IC Gate Driver
    • Revision 1
      • 1 MSP430F5529 Launchpad
      • 1 LHI 2212 920KV Brushless Motor
      • 1 SIMONK 30A ESC
      • 1 Potentiometer to act as throttle input

Software Architecture

  • TI-RTOS
  • Current phase of implementation consists of:
    • Using MSP430 to generate varying width PWM signals to the SIMONK ESC
    • Potentiometer attached to analog input P6.1
  • Periodics
    • 50Hz CLK

Software Requirements

Software is based on MSP430F5529 launchpad, running TI-RTOS.

References