3.22EjemploDRM007 Co..
3.22EjemploDRM007 Co..
3.22EjemploDRM007 Co..
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Software Design <strong>Co</strong>nsiderations<br />
Speed <strong>Co</strong>ntrol Algorithm<br />
5.4.1 Motor Stalled Protection<br />
The motor stalled protection subroutine is used for commutating the<br />
motor windings if the motor hasn’t moved to a new angular position. If<br />
the motor doesn’t change its angular position in a period of 250<br />
milliseconds, the motor is completely stopped.<br />
The motor stalled subroutine’s flowchart is the following:<br />
Motor Stalled<br />
Protection<br />
Time_Out =<br />
Time_Out + 1<br />
Time_Out > 250<br />
YES<br />
Stop Motor<br />
NO<br />
(Time_Out % 8) = 0<br />
YES<br />
NextSequence<br />
NO<br />
End<br />
Figure 5-3. Motor Stalled Protection Flowchart<br />
BLDC Motor <strong>Co</strong>ntrol Board for Industrial and Appliance Applications<br />
DRM007<br />
MOTOROLA Software Design <strong>Co</strong>nsiderations 79
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