3.22EjemploDRM007 Co..
3.22EjemploDRM007 Co..
3.22EjemploDRM007 Co..
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Software Design <strong>Co</strong>nsiderations<br />
the complementary mode with a two MOSFET commutation scheme is<br />
done by software. The deadtime is fixed to 2 microseconds for both<br />
commutation schemes. This method allows independence of<br />
commutation and speed control. See Figure 5-5.<br />
Start of next sequence<br />
Read new state of Hall<br />
sensors<br />
Look up new transistor states<br />
from angular rotor position<br />
Put new value to PWM<br />
module<br />
End<br />
Figure 5-5. <strong>Co</strong>mmutation Algorithm for Hall Sensors<br />
DRM007<br />
BLDC Motor <strong>Co</strong>ntrol Board for Industrial and Appliance Applications<br />
82 Software Design <strong>Co</strong>nsiderations MOTOROLA
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