Diagnosis and FTC by Prof. Blanke [pdf] - NTNU

More documents

Recommendations

Info

19 20 The real thing By courtesy from C. Thybo A stop using the emergency brake subjects the structure to large stresses. An x-ray certification is required after each emergency stop. Graceful degradation pays off - a potential application for fault-tolerant control. Handling of faults – Induction Motor • Accommodation: high performance controller that needs several sensor inputs is replaced (at run time) with one that can run with remaining sensors but with reduced performance Stator current i s θ i sa i sb ε i sq i sd ρ Rotor flux ω mr Mogens Blanke – Spring 2006 Rotor angle em = z ω ω p m Stator axis • Flux vector control - high performance, measurement needed Mogens Blanke – Spring 2006 10
21 22 Handling of faults - 2 • Accommodation: high performance controller that needs several sensor inputs is replaced (at run time) with one that can run with remaining sensors but with reduced performance ω set + Load - K ωactual • Scalar control - low performance, no sensors Induction Motor Fault-tolerant Control • Implementation of fault-tolerant control - time to reconfigure is crucial. • Alternative motor control algorithms are not globally stable - large field angle deviations are not allowed. Mogens Blanke – Spring 2006 • The likelihood of successful reconfiguration is crucial - the concept of coverage - reliability issues • Coverage = Prob.(System recovers|Fault occurs) Mogens Blanke – Spring 2006 11
Page 1 and 2: 1 2 Fault-tolerant Control Lecturer
Page 3 and 4: 5 6 Structure of Plant + Controller
Page 5 and 6: 9 10 Fault-tolerant Control Fault-t
Page 7 and 8: 13 14 Handling of fault - reconfigu
Page 9: 17 18 Model-matching state-feedback
Page 13 and 14: 25 26 Properties of possible archit
Page 15 and 16: 29 30 Diagnosis and Fault-tolerant
Page 17 and 18: 33 34 Safety versus fault-tolerance
Page 19 and 20: 37 38 Models of dynamical systems L
Page 21 and 22: 41 42 Example on requirements to di
Page 23 and 24: 45 46 Digraph for linear system Exa
Page 25 and 26: 49 50 Example 5.3: tank system F =
Page 27 and 28: 53 54 Example 5.3: controlled tank
Page 29 and 30: 57 58 Non invertible constraints =
Page 31 and 32: 61 62 Differential and integral con
Page 33 and 34: 65 66 SaTool - A tool for Structura
Page 35 and 36: 69 70 SaTool - A tool for Structura
Page 37 and 38: 73 74 Constraints - forces from act
Page 39 and 40: 77 78 The Constraint Editor in SaTo
Page 41 and 42: 81 82 Parity relations (normal oper
Page 43 and 44: 85 86 Fault means violation of a co
Page 45 and 46: 89 90 Maritime uses - Naval and Off

Diagnosis and FTC by Prof. Blanke [pdf] - NTNU

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?