Redundancy Optimization of Hyper Redundant Robots Based on Movability and Assistability

This paper describes a new method to utilize redundancy of hyper redundant robots. In order to establish the effectively use of enormous amount of redundancy, both of the all actuators' contribution for the achievement of the target motions and capability for unpredictable target motions in...

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Main Authors: Daisuke MATSUURA, Nobuyuki IWATSUKI, Masafumi OKADA
Format: Article
Language:English
Published: The Japan Society of Mechanical Engineers 2008-11-01
Series:Journal of Advanced Mechanical Design, Systems, and Manufacturing
Subjects:
Online Access:https://www.jstage.jst.go.jp/article/jamdsm/2/6/2_6_1021/_pdf/-char/en
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author Daisuke MATSUURA
Nobuyuki IWATSUKI
Masafumi OKADA
author_facet Daisuke MATSUURA
Nobuyuki IWATSUKI
Masafumi OKADA
author_sort Daisuke MATSUURA
collection DOAJ
description This paper describes a new method to utilize redundancy of hyper redundant robots. In order to establish the effectively use of enormous amount of redundancy, both of the all actuators' contribution for the achievement of the target motions and capability for unpredictable target motions in future should be maximized simultaneously. From this point of view, two redundancy utilization strategies are proposed based on the different evaluation indices, the movability index of each joint and the assistability index for target motions. These indices are formulated based on the evaluation of angular distribution of the column vectors of Jacobian matrices on velocity of each joint, including the end-effector. Then joint input are derived based on the improved gradient projection method to optimize the indices simultaneously. Motion control simulations and experiments with a planar 10R serial manipulator demonstrated the effectiveness of the proposed method.
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spelling doaj.art-0deb30947a524a2bb3eb6036e0a2b15e2022-12-22T00:56:19ZengThe Japan Society of Mechanical EngineersJournal of Advanced Mechanical Design, Systems, and Manufacturing1881-30542008-11-01261021102910.1299/jamdsm.2.1021jamdsmRedundancy Optimization of Hyper Redundant Robots Based on Movability and AssistabilityDaisuke MATSUURA0Nobuyuki IWATSUKI1Masafumi OKADA2Dept. of Mechanical Sciences and Engineering, Tokyo Institute of TechnologyDept. of Mechanical Sciences and Engineering, Tokyo Institute of TechnologyDept. of Mechanical Sciences and Engineering, Tokyo Institute of TechnologyThis paper describes a new method to utilize redundancy of hyper redundant robots. In order to establish the effectively use of enormous amount of redundancy, both of the all actuators' contribution for the achievement of the target motions and capability for unpredictable target motions in future should be maximized simultaneously. From this point of view, two redundancy utilization strategies are proposed based on the different evaluation indices, the movability index of each joint and the assistability index for target motions. These indices are formulated based on the evaluation of angular distribution of the column vectors of Jacobian matrices on velocity of each joint, including the end-effector. Then joint input are derived based on the improved gradient projection method to optimize the indices simultaneously. Motion control simulations and experiments with a planar 10R serial manipulator demonstrated the effectiveness of the proposed method.https://www.jstage.jst.go.jp/article/jamdsm/2/6/2_6_1021/_pdf/-char/enredundancy utilizationhyper redundant robotdexteritymovabilityassistability
spellingShingle Daisuke MATSUURA
Nobuyuki IWATSUKI
Masafumi OKADA
Redundancy Optimization of Hyper Redundant Robots Based on Movability and Assistability
Journal of Advanced Mechanical Design, Systems, and Manufacturing
redundancy utilization
hyper redundant robot
dexterity
movability
assistability
title Redundancy Optimization of Hyper Redundant Robots Based on Movability and Assistability
title_full Redundancy Optimization of Hyper Redundant Robots Based on Movability and Assistability
title_fullStr Redundancy Optimization of Hyper Redundant Robots Based on Movability and Assistability
title_full_unstemmed Redundancy Optimization of Hyper Redundant Robots Based on Movability and Assistability
title_short Redundancy Optimization of Hyper Redundant Robots Based on Movability and Assistability
title_sort redundancy optimization of hyper redundant robots based on movability and assistability
topic redundancy utilization
hyper redundant robot
dexterity
movability
assistability
url https://www.jstage.jst.go.jp/article/jamdsm/2/6/2_6_1021/_pdf/-char/en
work_keys_str_mv AT daisukematsuura redundancyoptimizationofhyperredundantrobotsbasedonmovabilityandassistability
AT nobuyukiiwatsuki redundancyoptimizationofhyperredundantrobotsbasedonmovabilityandassistability
AT masafumiokada redundancyoptimizationofhyperredundantrobotsbasedonmovabilityandassistability