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The Development, Control and Operation of an Autonomous Robotic Excavator

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Abstract

The excavation of foundations, general earthworks and earth removal tasks are activities which involve the machine operator in a series of repetitive operations, suggesting opportunities for the automation through the introduction of robotic technologies with subsequent improvements in machine utilisation and throughput. The automation of the earth removal process is also likely to provide a number of other benefits such as a reduced dependence on operator skills and a lower operator work load, both of which might be expected to contribute to improvements in quality and, in particular, the removal of the need for a local operator when working in hazardous environments.

The Lancaster University Computerised Intelligent Excavator or LUCIE has demonstrated the achievement of automated and robotic excavation through the implementation of an integrated, real-time, artificial intelligence based control system utilising a novel form of motion control strategy for movement of the excavator bucket through ground. Having its origins in the systematic observation of a range of machine operators of differing levels of expertise, the control strategy as evolved enables the autonomous excavation of a high quality rectangular trench in a wide variety of types and conditions of ground and the autonomous removal of obstacles such as boulders along the line of that trench.

The paper considers the development of the LUCIE programme since its inception and sets out in terms of the machine kinematics the evolution and development of the real-time control strategy from an implementation on a one-fifth scale model of a back-hoe arm to a full working system on a JCB801 360° tracked excavator.

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Authors and Affiliations

  1. School of Electronic Engineering and Computer Systems, University of Wales, Bangor, U.K

    David A. Bradley

  2. Engineering Department, Lancaster University, Lancaster, U.K

    Derek W. Seward

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  1. David A. Bradley
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  2. Derek W. Seward
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Bradley, D.A., Seward, D.W. The Development, Control and Operation of an Autonomous Robotic Excavator. Journal of Intelligent and Robotic Systems 21, 73–97 (1998). https://doi.org/10.1023/A:1007932011161

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  • DOI: https://doi.org/10.1023/A:1007932011161

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