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Erschienen in:
2015 | OriginalPaper | Buchkapitel
2. Plant Modelling
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Abstract
This chapter develops the background theory and provides the knowledge needed to generate plant models. After an introduction to the basic character of plants and their components, a subsection on physical modelling is presented. This is based on the underlying science of the various applications. Within the space limitations, the main emphasis is on mechanical systems and electric motors as actuators to cater for a large proportion of the applications. Some introductory material on thermal and fluid systems is also given. This is followed by a substantial section of identification of plant models from input and output signals in the frequency and time domains.
The appendix contains a comprehensive treatment of the kinematics of vehicle attitude control, relevant to applications such as spacecraft, aircraft and underwater vehicles. This is followed by a presentation of plant model determination from frequency response data including procedures for identifying plants with relatively close poles and/or zeros. Finally, a case study of plant modelling in the automotive industry is presented that embodies some of the techniques covered in the chapter.