Download e-book for kindle: Introduction to Bond Graphs and their Applications by Dr. Jean U. Thoma

By Dr. Jean U. Thoma

ISBN-10: 0080188818

ISBN-13: 9780080188812

ISBN-10: 0080188826

ISBN-13: 9780080188829

Advent to Bond Graphs and their purposes discusses the basic suggestions of bond graphs, besides its software in representing easy and intricate engineering platforms from diversified engineering disciplines. The textual content first information a few of the varieties of illustrations, equivalent to diagrams, versions, and graphs, after which proceeds to protecting basics of bond graphs. The publication then covers the applying within the context of mechanical engineering and layout. the following bankruptcy tackles the fluid mechanical purposes. bankruptcy five talks approximately electronics and electromechanical energy conversion, whereas bankruptcy 6 bargains with thermal and thermodynamics approach. subsequent, the choice covers the simulation and digital information processing by utilizing ENPORT application. The e-book could be of serious use to researchers and practitioners of assorted engineering disciplines.

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Extra info for Introduction to Bond Graphs and their Applications

Sample text

Furthermore integral causality is almost invariably preferred for digital computers. (4) In certain laws, for instance where the pressure drop is approximately equal to the square of flow, the function is single valued only with one causality — in this example with the volume flow as input and the pressure as output variable. Similarly with dry (Coulomb) friction the force is a singlevalued function of velocity but not vice versa. Generally the causality must be chosen such that the elements are described by a single-valued function — in the above example in the direction pressure from volume flow as indicated on the R-element of Fig.

Controller ► Drive Γ7—Η L o ad M ' 1 ,I ω Fig. 2. Bond graph and block diagram of a drive with causality. The operation can be interpreted alternatively according to Fig. 3, where the drive acts with the (angular) rotation frequency ω on the load that opposes a torque M. This is a different causality indicated on the bond graph of Fig. 3 (top) by the cross-stroke on the left. Consequently the effort acts to the left and the flow to the right. The bottom part of Fig. 3 shows the block diagram in this causality.

Controller ► Drive Γ7—Η L o ad M ' 1 ,I ω Fig. 2. Bond graph and block diagram of a drive with causality. The operation can be interpreted alternatively according to Fig. 3, where the drive acts with the (angular) rotation frequency ω on the load that opposes a torque M. This is a different causality indicated on the bond graph of Fig. 3 (top) by the cross-stroke on the left. Consequently the effort acts to the left and the flow to the right. The bottom part of Fig. 3 shows the block diagram in this causality.

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Introduction to Bond Graphs and their Applications by Dr. Jean U. Thoma


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