Custom Motor Controller

Responsible Person(s)

• Designer: @Jason Skells

• Mentor: @Sahil Kale

• Firmware Engineer: TBD, do this

Principle Objective:

• Design a custom motor controller for our rotorcraft vehicle, Project VANGUARD

Requirements:

1. The system shall be able to accomodate 24V

   1. Stems from being able to accommodate a 6s battery

2. The system shall be capable of supplying currents of up to 40 A continuous

   1. Requirement stems from Motor Calculations

3. The system should fit into a small form factor to be used on the arms of the frame

4. The system should not get hot (lol)

5. The system shall utilize an RC-Servo PWM control interface

Goals:

Rev 1:

• This system will use an off-board MCU (preferably STM32)

  • No need to worry about logic-level voltage line (5V/3V3)

• The system will accommodate requirements (1) and (2)

Rev 2:

• TBD given results from Rev 1

Timeline:

• MOSFET selection completed (Yay!)

  • https://docs.google.com/spreadsheets/d/1I4AAnhcjDfGTipcPXwY5bvdOteCTacBdvLgBPW0jUas/edit?usp=sharing

• Initial Schematic → Tuesday Meeting, Nov 23

  • Gate Driver Breakout into headers

  • MOSFET 3-phase AC bridge

• Layout: TBD pending initial schematic review

Implementation Notes

• Chip being used: DRV8353FS

Misc

@Jason Skells to talk to @Kevin Li to figure out who’s writing the firmware for this bad boy