3.22EjemploDRM007 Co..
3.22EjemploDRM007 Co..
3.22EjemploDRM007 Co..
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Software Design <strong>Co</strong>nsiderations<br />
TIMA_OV_ISR<br />
1<br />
Dif_Capture =<br />
Actual_Capture -<br />
Past_Capture<br />
newPWM =<br />
(<strong>Co</strong>ntroller Output<br />
/ 256) + 128<br />
Dif_Capture <<br />
MINCAPTURE<br />
YES<br />
Speed =<br />
MAXSPEED<br />
MotorStalled<br />
Protection<br />
NO<br />
Dif_Capture ><br />
MAXCAPTURE<br />
YES<br />
Speed =<br />
MINSPEED<br />
Milli<strong>Co</strong>unter =<br />
Milli<strong>Co</strong>unter + 1<br />
2<br />
NO<br />
Milli<strong>Co</strong>unter > 10<br />
NO<br />
Speed = 1665 /<br />
(Dif_Capture / 18)<br />
YES<br />
End<br />
Milli<strong>Co</strong>unter = 0<br />
YES<br />
Actual_Direction =<br />
CCW<br />
YES<br />
Speed = -Speed<br />
NO<br />
BLDCState =<br />
BLDCWASH<br />
NO<br />
End of SPIN<br />
Table<br />
PI_<strong>Co</strong>ntroller<br />
YES<br />
NO<br />
<strong>Co</strong>ntroller<br />
Output < 0<br />
YES<br />
<strong>Co</strong>ntroller Output<br />
= -<strong>Co</strong>ntroller<br />
Output<br />
Speed Reference<br />
= WASHTable<br />
[index++]<br />
Speed Reference<br />
= SPINTable<br />
[index++]<br />
NO<br />
NO<br />
Required Direction<br />
= CW<br />
Required Direction<br />
= CCW<br />
2<br />
Required<br />
Direction =<br />
CCW<br />
YES<br />
1<br />
Speed Reference<br />
= -Speed<br />
Reference<br />
Figure 5-2. Speed <strong>Co</strong>ntrol Algorithm Flowchart<br />
DRM007<br />
BLDC Motor <strong>Co</strong>ntrol Board for Industrial and Appliance Applications<br />
78 Software Design <strong>Co</strong>nsiderations MOTOROLA
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