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Bond Graph Model-based Fault Diagnosis of Hybrid Systems by Wolfgang Borutzky

By Wolfgang Borutzky

This e-book provides bond graph model-based fault detection with a spotlight on hybrid procedure versions. The e-book addresses version layout, simulation, keep an eye on and model-based fault analysis of multidisciplinary engineering structures. The textual content beings with a quick survey of the state of the art, then specializes in hybrid platforms. the writer then makes use of assorted bond graph ways during the textual content and offers case studies.

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As the switch model contains a resistor in conductance causality, there may also be causal paths between a resistor and a switch or between switches. If a switch in one of these causal paths is in OFF mode, the switch and the causal path can be disregarded. Causal paths between resistors mean that their outputs are determined by a set of algebraic relations. 17) where m(t) denotes the vector of switch states m j (t) ∈ {0, 1}, j = 1, . . , n s , at time instant t > 0. For the time interval between two discrete events, m(t) is constant.

In: Proceedings of the 20th International Workshop on Principles of Diagnosis, DX-09 (pp. 321–328). Stockholm, Sweden. pdf. 6. Scilab Enterprises. Scilab;. 78000 Versailles, France. org/. 7. Isermann, R. (2005). Model-based fault-detection and diagnosis - status and applications. Annual Reviews in Control, 29, 71–85. 8. , & Staroswiecki, M. (2006). Diagnosis and Fault-Tolerant Control. Berlin: Springer. 9. Andrianiaina, P. , & Simon, D. (2011). In 2011 50th IEEE Conference on Decision and Control and European Control Conference (CDC-ECC) (pp.

2 Bond Graph Representations of Hybrid System Models v1 27 v2 r Fin m k I :m R :r FR v2 Se Fin 1 v1 0 Fsw v12 Sw 1 v2 FC C :k Fig. 3) In general, the complementary variables can be vectors if inequalities hold componentwise. Let M be a k × k matrix and q a k-dimensional real vector. 4b) This problem has a unique solution if the matrix fulfills a certain condition [22]. Example: Mechanical Stop In the bond graph of Fig. 5, an ideal switch Sw is used to model an elastic mechanical stop. Clearly, if the cart is not in contact with the stop then Fsw = 0 ∧ v12 := v1 −v2 ≥ 0.

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