Robust Nonlinear Model Predictive Control for Robot Manipulators with Disturbances

Yuantao Yu, Li Dai*, Zhongqi Sun, Yuanqing Xia

*Corresponding author for this work

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

2 Citations (Scopus)

Abstract

T0641. The robust NMPC algorithm is developed based on tube methodology. First, by making use of the upper-bound of the disturbances, the tube cross-sections are calculated to contain all possible states of the actual systems, which are centred on a nominal trajectory optimized online. We then use the tube cross-sections to tighten the constraints on the nominal predictions and design a tailored terminal region and a corresponding terminal controller. By implementing the proposed algorithm, robust constraint satisfaction and recursive feasibility are ensured even in the presence of disturbances. In addition, the perturbed closed-loop system is input-to-state stable (ISS) and converges asymptotically to a neighborhood of the reference trajectory.

Original languageEnglish
Title of host publicationProceedings of the 37th Chinese Control Conference, CCC 2018
EditorsXin Chen, Qianchuan Zhao
PublisherIEEE Computer Society
Pages3629-3633
Number of pages5
ISBN (Electronic)9789881563941
DOIs
Publication statusPublished - 5 Oct 2018
Event37th Chinese Control Conference, CCC 2018 - Wuhan, China
Duration: 25 Jul 201827 Jul 2018

Publication series

NameChinese Control Conference, CCC
Volume2018-July
ISSN (Print)1934-1768
ISSN (Electronic)2161-2927

Conference

Conference37th Chinese Control Conference, CCC 2018
Country/TerritoryChina
CityWuhan
Period25/07/1827/07/18

Keywords

  • Nonlinear model predictive control (NMPC)
  • Robot manipulator
  • Robust control
  • Trajectory tracking

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