The Library
Multi-objective scheduling and control of a nonlinear automotive powertrain
Tools
Garbett, Kay Susan (1991) Multi-objective scheduling and control of a nonlinear automotive powertrain. PhD thesis, University of Warwick.
|
PDF
WRAP_Theses_Garbett_1991.pdf - Unspecified Version - Requires a PDF viewer. Download (6Mb) | Preview |
Official URL: http://webcat.warwick.ac.uk/record=b1410755~S1
Abstract
The automotive industry is faced with the challenge of ever-increasing emission legislation. This study demonstrates the effective use of nonlinear techniques in automotive control for the problem of fuel and emission minimisation. A review of previous work highlights the inadequacy of traditional optimisation formulations. The conflicting requirements of both low fuel and emissions is a design problem for which compromise and trade-offs are unavoidable. This study attacks the problem through powertrain scheduling, an approach ideally suited to both S.I. and diesel engines, and demonstrates how the novel application of multi-objective optimisation methods provides a solution more akin to the real physical problem.
The modern control theory approach presented is a three stage process : formulation of the mathematical model, including the essential dynamics, constraints, and objectives of the physical problem; optimisation of the control strategy with respect to the relevant performance criteria; and synthesis of the optimal control design. The optimisation model is finite-dimensional and nonlinear, the use of which demands a knowledge of nonlinear systems and available methods. These are classified. Results for single and multi-objective optimisations are compared and fully demonstrate the advantages of the latter for the scheduling problem. Optimal schedules are generated and from them, implementable rule-based control laws are derived. Performance, in terms of the ability to track a legislative test cycle and to retain the optimal design specification, is demonstrated through dynamic simulation, as is their driveability and robustness.
This study specifically considers a diesel-engined vehicle incorporating a CVT. The methods tire widely applicable however, to other engine and transmissions types, and to other automotive control problems.
Item Type: | Thesis (PhD) | ||||
---|---|---|---|---|---|
Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||
Library of Congress Subject Headings (LCSH): | Motor vehicles -- Power trains -- Design and construction, Automatic control, Control theory | ||||
Official Date: | September 1991 | ||||
Dates: |
|
||||
Institution: | University of Warwick | ||||
Theses Department: | Department of Chemistry | ||||
Thesis Type: | PhD | ||||
Publication Status: | Unpublished | ||||
Supervisor(s)/Advisor: | Jones, R. P. | ||||
Sponsors: | Science and Engineering Research Council (Great Britain), Lucas Automotive | ||||
Extent: | xi, 284 leaves: illustrations | ||||
Language: | eng |
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year