Four-Dimensional Gait Surfaces for a Tilt-Rotor—Two Color Map Theorem

This article presents the four-dimensional surfaces that guide the gait plan for a tilt-rotor. The previous gaits analyzed in the tilt-rotor research are inspired by animals; no theoretical base backs the robustness of these gaits. This research deduces the gaits by diminishing the adverse effect of...

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Main Authors: Zhe Shen, Yudong Ma, Takeshi Tsuchiya
Format: Article
Language:English
Published: MDPI AG 2022-04-01
Series:Drones
Subjects:
Online Access:https://www.mdpi.com/2504-446X/6/5/103
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author Zhe Shen
Yudong Ma
Takeshi Tsuchiya
author_facet Zhe Shen
Yudong Ma
Takeshi Tsuchiya
author_sort Zhe Shen
collection DOAJ
description This article presents the four-dimensional surfaces that guide the gait plan for a tilt-rotor. The previous gaits analyzed in the tilt-rotor research are inspired by animals; no theoretical base backs the robustness of these gaits. This research deduces the gaits by diminishing the adverse effect of the attitude of the tilt-rotor for the first time. Four-dimensional gait surfaces are subsequently found on which the gaits are expected to be robust to the attitude. These surfaces provide the region where the gait is suggested to be planned. However, a discontinuous region may hinder the gait plan process while utilizing the proposed gait surfaces. The ‘Two Color Map Theorem’ is then established to guarantee the continuity of each gait designed. The robustness of the typical gaits on the gait surface, obeying the Two Color Map Theorem, is demonstrated by comparing the singular curves in attitude with the gaits not on the gait surface. The result shows that the gaits on the gait surface receive wider regions of the acceptable attitudes.
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spelling doaj.art-3586f16e9a204198a62ab653901b54712023-11-23T10:43:59ZengMDPI AGDrones2504-446X2022-04-016510310.3390/drones6050103Four-Dimensional Gait Surfaces for a Tilt-Rotor—Two Color Map TheoremZhe Shen0Yudong Ma1Takeshi Tsuchiya2Department of Aeronautics and Astronautics, The University of Tokyo, Tokyo 1138654, JapanDepartment of Aeronautics and Astronautics, The University of Tokyo, Tokyo 1138654, JapanDepartment of Aeronautics and Astronautics, The University of Tokyo, Tokyo 1138654, JapanThis article presents the four-dimensional surfaces that guide the gait plan for a tilt-rotor. The previous gaits analyzed in the tilt-rotor research are inspired by animals; no theoretical base backs the robustness of these gaits. This research deduces the gaits by diminishing the adverse effect of the attitude of the tilt-rotor for the first time. Four-dimensional gait surfaces are subsequently found on which the gaits are expected to be robust to the attitude. These surfaces provide the region where the gait is suggested to be planned. However, a discontinuous region may hinder the gait plan process while utilizing the proposed gait surfaces. The ‘Two Color Map Theorem’ is then established to guarantee the continuity of each gait designed. The robustness of the typical gaits on the gait surface, obeying the Two Color Map Theorem, is demonstrated by comparing the singular curves in attitude with the gaits not on the gait surface. The result shows that the gaits on the gait surface receive wider regions of the acceptable attitudes.https://www.mdpi.com/2504-446X/6/5/103tilt-rotorfeedback linearizationsingulargait planrobustnesscolor map theorem
spellingShingle Zhe Shen
Yudong Ma
Takeshi Tsuchiya
Four-Dimensional Gait Surfaces for a Tilt-Rotor—Two Color Map Theorem
Drones
tilt-rotor
feedback linearization
singular
gait plan
robustness
color map theorem
title Four-Dimensional Gait Surfaces for a Tilt-Rotor—Two Color Map Theorem
title_full Four-Dimensional Gait Surfaces for a Tilt-Rotor—Two Color Map Theorem
title_fullStr Four-Dimensional Gait Surfaces for a Tilt-Rotor—Two Color Map Theorem
title_full_unstemmed Four-Dimensional Gait Surfaces for a Tilt-Rotor—Two Color Map Theorem
title_short Four-Dimensional Gait Surfaces for a Tilt-Rotor—Two Color Map Theorem
title_sort four dimensional gait surfaces for a tilt rotor two color map theorem
topic tilt-rotor
feedback linearization
singular
gait plan
robustness
color map theorem
url https://www.mdpi.com/2504-446X/6/5/103
work_keys_str_mv AT zheshen fourdimensionalgaitsurfacesforatiltrotortwocolormaptheorem
AT yudongma fourdimensionalgaitsurfacesforatiltrotortwocolormaptheorem
AT takeshitsuchiya fourdimensionalgaitsurfacesforatiltrotortwocolormaptheorem