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Title: Dynamic system simulation using graphically defined models
Author: Huynh Quoc, T.
Awarding Body: University College of Swansea
Current Institution: Swansea University
Date of Award: 1991
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This thesis describes an approach to the digital simulation of dynamic systems in which the behaviour occurs continuously in time. Dynamic systems are modelled and synthesised in graphical forms, such as block diagrams and signal flow graph. The emphasis in this thesis has been on the block diagram form. A block diagram representation of a system model is graphically defined in the Control Engineering workStation (CES). Blocks in the block diagram can have realistic graphical symbols and meanings. Block operations can be defined in mathematical form, parameter-based form or text-based form. The graphically defined model in the form of a block diagram can be simulated using existing commercial simulation packages. For this purpose interfaces have been developed to allow CES to be integrated with two commercial simulation packages, ACSL and SIMNON, and can be extended to other packages if required. The user interaction with a simulation package has been carried out by graphical means, with the generation of simulation codes and the driving of the package being done automatically. Simulation results can be inspected in the graphical environment of CES. To exploit the topological and dynamic structures of system models represented in the form of block diagrams, for the purpose of parallel simulation, a graphical approach has been developed. This approach allows a concurrent simulation model to be expressed in a relatively simple manner, similar to that used with analog computers. Blocks and connections in the block diagram are considered to be separate communicating processes and communicative channels. Furthermore, these processes are considered as basic units to be allocated to processors. Based on this approach, a parallel transputer-based simulator has been developed. The transputer-based simulator has been linked to CES, using a mechanism similar to that used for linkage to commercial simulation packages.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available