25-08-2017, 09:32 PM
AVR32723: Sensor Field Oriented Control for Brushless DC motors with AT32UC3B0256
Sensor Field.pdf (Size: 455.97 KB / Downloads: 211)
Features
• Standalone Space Vector Modulation library for AVR®32 UC3 microcontroller.
• Park and Clarke mathematical transformation library for AVR32 UC3
microcontroller.
• Theory of Field Oriented Control.
• PC application for real time motor remote control and display of regulated
variables.
Introduction
This application note delivers an implementation of Sensor Field Oriented Control
algorithm for brushless DC motor on Atmel® AVR32 UC3B microcontrollers.
This software includes standalone libraries for all mathematical transformations
required by the algorithm.
For more information about the AVR32 architecture, please refer to the appropriate
documents available from http://www.atmelavr32.
Requirements
The software provided with this application note requires several components:
• A computer running Microsoft® Windows® 2000/XP/Vista® or Linux®
• AVR32Studio and the GNU toolchain (GCC) or IAR Embedded
Workbench® for AVR32 compiler.
• A JTAGICE mkII or AVROne! debugger
Overview
As continuity in the energy efficiency process, the increase of capability of
microcontrollers allows to implement complex algorithm as Field Oriented Control
methodology which allows to:
• Reduce power consumption (less power loss) of electrical motor driving.
• Provide smoother and more accurate motor control than sinusoidal command
with hall feedback.
• Optimize motor choice (torque): find the best alternative between dimension
and power.
But this algorithm requires more complex computation and requires more CPU
bandwidth than standard algorithms.
Moreover, this command strategy fits with some brushless DC motors with dynamical
load changes due to reduction of response time. It allows regulating torque and speed
at the same time.