| 摘要 |
A computer-aided engineering and design (CAE/CAD) tool for defining and verifying a system definition provides an improved technique for modeling multi-disciplinary signals. Terminals within the system definition have associated quantities (voltage, current, energy, velocity, flux, flow, acceleration, heat, weight, length, etc.) from diverse disciplines (e.g., electrical, mechanical, thermal, optical, chemical, and fluidic etc.). A strength (e.g., "indifferent", "suggest", "insist", or "overide") is also associated with each terminal. The quantities of each terminal are nominated to be the quantities of a node the terminal is connected to. When conflicting quantities are assigned to a common node in the system (i.e., a plurality of terminals with different associated quantities connect to the same node), rules based on the associated terminal strengths are applied to resolve the conflict. An initial node quantity and node strength are assigned to the common node based on the resolution of the conflict. Node quantities are then propagated through their associated terminals and through connecting branches to other terminals and nodes. When conflicting initial quantities exist in a common branch that connects a plurality of nodes, rules based on the associated initial node strengths are applied to resolve the conflict. Finally, internal signals of components inherit the quantities of the nodes they are associated with.
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