Mechanical structure optimization in minimum-time motion control of flexible bodies

© 2015 Elsevier Ltd. This paper considers the problem of minimum-time motion control of a flexible body for which the dynamic properties can be optimized within a structural design. This allows a matching of modal characteristics to a control task such that reductions in time-of-motion can be achiev...

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Main Authors: Boonruk Suchaitanawanit, Matthew O.T. Cole
Format: Journal
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/44531
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-445312018-04-25T07:52:11Z Mechanical structure optimization in minimum-time motion control of flexible bodies Boonruk Suchaitanawanit Matthew O.T. Cole Agricultural and Biological Sciences © 2015 Elsevier Ltd. This paper considers the problem of minimum-time motion control of a flexible body for which the dynamic properties can be optimized within a structural design. This allows a matching of modal characteristics to a control task such that reductions in time-of-motion can be achieved compared with unoptimized designs. The problem formulation is based on an elastic structure undergoing a motion task with specified boundary conditions and subject to limits on actuation forces. A numerical method for calculating minimum-time control input solutions based on an iterative construction of the reachable set is first considered. A structural optimization approach is further developed based on continuity properties of the solution set, these admitting a first order perturbation analysis from which an optimization of system design parameters can be achieved. A selection of numerical case studies are presented involving single and multi-mode structures. Possibilities for realization of the approach using variable stiffness/deformable structures are discussed and results from a linear motion stage with tunable-stiffness flexible armature presented that demonstrate the potential benefits. 2018-01-24T04:44:17Z 2018-01-24T04:44:17Z 2015-01-01 Journal 00051098 2-s2.0-84947748128 10.1016/j.automatica.2015.09.020 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84947748128&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/44531
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Agricultural and Biological Sciences
spellingShingle Agricultural and Biological Sciences
Boonruk Suchaitanawanit
Matthew O.T. Cole
Mechanical structure optimization in minimum-time motion control of flexible bodies
description © 2015 Elsevier Ltd. This paper considers the problem of minimum-time motion control of a flexible body for which the dynamic properties can be optimized within a structural design. This allows a matching of modal characteristics to a control task such that reductions in time-of-motion can be achieved compared with unoptimized designs. The problem formulation is based on an elastic structure undergoing a motion task with specified boundary conditions and subject to limits on actuation forces. A numerical method for calculating minimum-time control input solutions based on an iterative construction of the reachable set is first considered. A structural optimization approach is further developed based on continuity properties of the solution set, these admitting a first order perturbation analysis from which an optimization of system design parameters can be achieved. A selection of numerical case studies are presented involving single and multi-mode structures. Possibilities for realization of the approach using variable stiffness/deformable structures are discussed and results from a linear motion stage with tunable-stiffness flexible armature presented that demonstrate the potential benefits.
format Journal
author Boonruk Suchaitanawanit
Matthew O.T. Cole
author_facet Boonruk Suchaitanawanit
Matthew O.T. Cole
author_sort Boonruk Suchaitanawanit
title Mechanical structure optimization in minimum-time motion control of flexible bodies
title_short Mechanical structure optimization in minimum-time motion control of flexible bodies
title_full Mechanical structure optimization in minimum-time motion control of flexible bodies
title_fullStr Mechanical structure optimization in minimum-time motion control of flexible bodies
title_full_unstemmed Mechanical structure optimization in minimum-time motion control of flexible bodies
title_sort mechanical structure optimization in minimum-time motion control of flexible bodies
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84947748128&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/44531
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