Diagnosis and FTC by Prof. Blanke [pdf] - NTNU
Diagnosis and FTC by Prof. Blanke [pdf] - NTNU
Diagnosis and FTC by Prof. Blanke [pdf] - NTNU
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21<br />
22<br />
H<strong>and</strong>ling of faults - 2<br />
• Accommodation: high<br />
performance controller that<br />
needs several sensor inputs<br />
is replaced (at run time) with<br />
one that can run with<br />
remaining sensors but with<br />
reduced performance<br />
ω set<br />
+<br />
Load<br />
-<br />
K<br />
ωactual<br />
• Scalar control - low<br />
performance, no sensors<br />
Induction Motor Fault-tolerant Control<br />
• Implementation of fault-tolerant control - time to<br />
reconfigure is crucial.<br />
• Alternative motor control algorithms are not globally<br />
stable - large field angle deviations are not allowed.<br />
Mogens <strong>Blanke</strong> – Spring 2006<br />
• The likelihood of successful reconfiguration is crucial -<br />
the concept of coverage - reliability issues<br />
• Coverage = Prob.(System recovers|Fault occurs)<br />
Mogens <strong>Blanke</strong> – Spring 2006<br />
11