Human crossfeed in dual-axis manual control with motion feedback

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Abstract

While many realistic manual control tasks require human operators to control multiple degrees-of-freedomsimultaneously, our understanding of such multi-axis manual control has not moved far beyond considering it simply as the control of multiple fully-independent axes. This investigation aims to further our understanding of multi-axis control by focusing on one phenomenon that is known to occur in such tasks: crossfeed. Crossfeed occurs when operators’ inputs in one controlled axis feed into another controlled degree-of-freedom, thereby affecting overall control performance. A human-in-the-loop experiment, in which operators performed a dual-axis aircraft roll and pitch tracking task with physical motion feedback, was conducted in the SIMONA Research Simulator at TU Delft. Three conditions were tested: the full dual-axis control task, supplemented with reference single-axis roll and pitch tasks. Through the use of independent target and disturbance forcing function signals in both controlled axes, we were able to detect the presence of crossfeed in this dual-axis task from spectral analysis. Furthermore, these signals facilitated the objective identification of the dynamics of the crossfeed contribution, in parallel with estimating operators visual and motion responses. The crossfeed dynamics were found to resemble the well-known dynamics of human operators’ visual responses. The crossfeed contribution was found to explain up to 20% of the measured control inputs, thereby indicating that crossfeed can be a factor of significance in multi-axis manual control.
Original languageEnglish
Title of host publicationIFAC-PapersOnLine
Subtitle of host publication13th IFAC Symposium on Analysis, Design, and Evaluation ofHuman-Machine Systems HMS 2016
EditorsT. Sawaragi
Place of PublicationLaxenburg, Austria
PublisherElsevier
Pages189-194
Volume49
Edition19
DOIs
Publication statusPublished - 2016
Event13th IFAC Symposium on Analysis, Design, and Evaluation of Human-Machine Systems - Kyoto, Japan
Duration: 30 Aug 20162 Sep 2016

Publication series

NameIFAC-PapersOnLine
PublisherIFAC-Elsevier
Number19
Volume49
ISSN (Electronic)2405-8963

Conference

Conference13th IFAC Symposium on Analysis, Design, and Evaluation of Human-Machine Systems
Abbreviated titleHMS 2016
CountryJapan
CityKyoto
Period30/08/162/09/16

Keywords

  • multi-axis control
  • manual control
  • human operator modeling
  • crossfeed

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