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Trajectory Optimization Algorithm based on Robot Dynamics and Convex Optimization

  • School of Mechatronics Engineering, Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper mainly discusses the trajectory optimization problem of industrial robot along predetermined path in Cartesian space aiming at minimize the traverse time and smoothing the trajectory. The algorithm relies heavily on the complete robot dynamics model, in which both viscous friction and Coulomb friction are included. Based on convex optimization theory, the trajectory optimization formulation can transform into a second-order cone programming (SOCP) problem, which can be solved numerically through a discretization scheme and SDPT3 solver. Additionally, a constraint generated from the torque-speed curve of motors is added to the aforementioned convex optimization formulation. The simulation results show that our improved trajectory optimization algorithm attains smooth and time optimal trajectory with shorter traverse time and good tracking performance compared with previous methods.

Original languageEnglish
Title of host publicationProceedings of 2019 IEEE 3rd Advanced Information Management, Communicates, Electronic and Automation Control Conference, IMCEC 2019
EditorsBing Xu
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1583-1588
Number of pages6
ISBN (Electronic)9781728105130
DOIs
StatePublished - Oct 2019
Externally publishedYes
Event3rd IEEE Advanced Information Management, Communicates, Electronic and Automation Control Conference, IMCEC 2019 - Chongqing, China
Duration: 11 Oct 201913 Oct 2019

Publication series

NameProceedings of 2019 IEEE 3rd Advanced Information Management, Communicates, Electronic and Automation Control Conference, IMCEC 2019

Conference

Conference3rd IEEE Advanced Information Management, Communicates, Electronic and Automation Control Conference, IMCEC 2019
Country/TerritoryChina
CityChongqing
Period11/10/1913/10/19

Keywords

  • convex optimization
  • robot dynamics
  • torque-speed curve
  • trajectory optimization

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