AVR449: Sinusoidal driving of 3-phase permanent magnet motor using ATtiny261/461/861
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چکیده
• Three-phase sine waves 192 steps per electrical revolution 10-bit amplitude resolution • Hardware dead-time generation • Controlled by hall-sensors • Speed control through run-time scaling of sine wave amplitude Speed reference from analog input • Automatically synchronizes to a running motor at startup • Safe startup using block-commutation the first commutation steps • Direction controlled by digital input • Safe stop and direction change procedure Active braking or coasting during stopping • Advance commutation angle adjustable at run-time
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