Human Head and Binocular Eye Movement Control via Feedback Linearization

Bhagya Athukorallage, Bijoy K. Ghosh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

In this paper, eye and head movement control problems are studied as a constrained dynamics on SO(3) from the point of view of a nonlinear multi input multi output system. In the mid-nineteenth century, Donders had proposed that for every human head rotating away from the primary pointing direction, the rotational vectors are restricted to lie on a surface. The same is true for the human eye as well, under the head-fixed condition as proposed by Listing, wherein the Donders' surface would degenerate to a plane, called the Listing's plane. Additionally, when two eyes are gazing at a moving target, their gaze directions have to intersect at all time. Each eye and the head are controlled by a triplet of external torques provided by muscles. For the head (respectively Eye) movement problem, three output signals are chosen as follows. Two of the signals are coordinates of the frontal pointing direction. The third signal measures deviation of the state vector from the Donders' surface (respectively Listing's plane). For the binocular eye movement problem, inputs are the two triplets of external torques that control the two eyes. Output signals from one eye are identical to what we had in the monocular problem. Output signals for the other eye is modified as follows. One of the coordinate of the frontal pointing direction is replaced by a scalar that measures deviation of the gaze direction vectors to meet at a point. Thus we have a 3 × 3 (or a 6 × 6 for the binocular case) square system and the claim in this paper is that the proposed square system is locally feedback linearizable on a suitable neighborhood N of the state space.

Original languageEnglish
Title of host publication2018 Annual American Control Conference, ACC 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages6709-6714
Number of pages6
ISBN (Print)9781538654286
DOIs
StatePublished - Aug 9 2018
Event2018 Annual American Control Conference, ACC 2018 - Milwauke, United States
Duration: Jun 27 2018Jun 29 2018

Publication series

NameProceedings of the American Control Conference
Volume2018-June
ISSN (Print)0743-1619

Conference

Conference2018 Annual American Control Conference, ACC 2018
CountryUnited States
CityMilwauke
Period06/27/1806/29/18

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  • Cite this

    Athukorallage, B., & Ghosh, B. K. (2018). Human Head and Binocular Eye Movement Control via Feedback Linearization. In 2018 Annual American Control Conference, ACC 2018 (pp. 6709-6714). [8430819] (Proceedings of the American Control Conference; Vol. 2018-June). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.23919/ACC.2018.8430819