Part Number: MSP430FR5949
This is about just started my project "Sensorless BLDC Motor Controller: Modular System" on Kickstarter DIY, I think it will be helpful for TI MSP430 community on the Engineers and students. It is an open source hardware and firmware.
Event driven finite state machines (FSM) approach was used for this sensorless BLDC motor controller firmware. The programming language is C and there is no operating system.
It was implemented by myself from scratch based on the well known motor control, other algorithms and the firmware is a totally open source product.
What the implemented firmware can do?
- Uses a 31.25 kHz symmetric PWM scheme to better detect BEMF zero crossing
- 12-bit ADC configured as a window comparator makes more error prone zero crossing detection, especially on a start
- Initial Position Detection (IPD) algorithm was implemented based on Variable Inductance Sensing Method
- A rotor revolving direction can be changed any time on a fly, that can be used for "reverse braking"
- Safety stop when a motor stalled
- Motor speed control (start, stop, up, down, duty cycle %) and obtaining a real time telemetric data (speed, voltage current) using serial UART interface configured for 460800 bps
- Motor speed control using standard 1...2 ms PPM of remote control (RC) devices
Thanks.
