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A bond graph is a graphical representation of a physical dynamic system. It allows the conversion of the system into a state-space representation . It is similar to a block diagram or signal-flow graph , with the major difference that the arcs in bond graphs represent bi-directional exchange of physical energy , while those in block diagrams ...
The Bond graph modelling approach was presented for the first time in the "Ports, Energy and Thermodynamic Systems" on April 24, 1959, at MIT, which was later published (Paynter, 1961). Paynter was elected to the National Academy of Engineering in 1997, one of the highest professional distinctions accorded to an engineer.
In graph theory, a dipole graph, dipole, bond graph, or linkage, is a multigraph consisting of two vertices connected with a number of parallel edges. A dipole graph containing n edges is called the size-n dipole graph, and is denoted by D n. The size-n dipole graph is dual to the cycle graph C n.
20-sim is a commercial modeling and simulation program for multi-domain dynamic systems, which is developed by Controllab. 20-sim allows models to be entered as equations, block diagrams, bond graphs and physical components. 20-sim is used for modeling complex multi-domain systems and for the development of control systems.
A hybrid bond graph is a graphical description of a physical dynamic system with discontinuities (i.e., a hybrid dynamical system). Similar to a regular bond graph, it is an energy-based technique. However, it allows instantaneous switching of the junction structure, which may violate the principle of continuity of power (Mosterman and Biswas ...
In finance, bond convexity is a measure of the non-linear relationship of bond prices to changes in interest rates, and is defined as the second derivative of the price of the bond with respect to interest rates (duration is the first derivative). In general, the higher the duration, the more sensitive the bond price is to the change in ...
Simple-RC-Circuit-bond-graph-4.png (563 × 377 pixels, file size: 5 KB, MIME type: image/png) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
Thus the bond graph separates the structure (a relationship between current and voltage that leads to a dissipation of energy) from the causality (assignment of input and output). In a more complex system, you can define the relationships between all the components without having to worry about which variables might be inputs and which outputs.