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Safety analysis of autonomous excavator functionality.

Seward, D. W. and Pace, C. and Morrey, R. and Sommerville, I. (2000) Safety analysis of autonomous excavator functionality. Reliability Engineering & System Safety, 70 (1). pp. 29-39.

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Abstract

This paper presents an account of carrying out a hazard analysis to define the safety requirements for an autonomous robotic excavator. The work is also relevant to the growing generic class of heavy automated mobile machinery. An overview of the excavator design is provided and the concept of a safety manager is introduced. The safety manager is an autonomous module responsible for all aspects of system operational safety, and is central to the control system's architecture. Each stage of the hazard analysis is described, i.e. system model creation, hazard definition and hazard analysis. Analysis at an early stage of the design process, and on a system that interfaces directly to an unstructured environment, exposes certain issues relevant to the application of current hazard analysis methods. The approach taken in the analysis is described. Finally, it is explained how the results of the hazard analysis have influenced system design, in particular, safety manager specifications. Conclusions are then drawn about the applicability of hazard analysis of requirements in general, and suggestions are made as to how the approach can be taken further

Item Type: Article
Journal or Publication Title: Reliability Engineering & System Safety
Uncontrolled Keywords: Excavator ; Mobile machinery ; Hazard analysis ; Safety manager
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Departments: Faculty of Science and Technology > Engineering
VC's Office
Faculty of Science and Technology > School of Computing & Communications
ID Code: 20313
Deposited By: ep_ss_importer
Deposited On: 23 Dec 2008 09:48
Refereed?: No
Published?: Published
Last Modified: 26 Jul 2012 15:38
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/20313

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