Reuleaux Triangle–Based Two Degrees of Freedom Bipedal Robot

This paper presents the design, modeling, analysis, and experimental results of a novel bipedal robotic system that utilizes two interconnected single degree-of-freedom (DOF) leg mechanisms to produce stable forward locomotion and steering. The single DOF leg is actuated via a Reuleaux triangle cam-...

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Main Authors: Jiteng Yang, Wael Saab, Yujiong Liu, Pinhas Ben-Tzvi
Format: Article
Language:English
Published: MDPI AG 2021-10-01
Series:Robotics
Subjects:
Online Access:https://www.mdpi.com/2218-6581/10/4/114
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author Jiteng Yang
Wael Saab
Yujiong Liu
Pinhas Ben-Tzvi
author_facet Jiteng Yang
Wael Saab
Yujiong Liu
Pinhas Ben-Tzvi
author_sort Jiteng Yang
collection DOAJ
description This paper presents the design, modeling, analysis, and experimental results of a novel bipedal robotic system that utilizes two interconnected single degree-of-freedom (DOF) leg mechanisms to produce stable forward locomotion and steering. The single DOF leg is actuated via a Reuleaux triangle cam-follower mechanism to produce a constant body height foot trajectory. Kinematic analysis and dimension selection of the Reuleaux triangle mechanism is conducted first to generate the desired step height and step length. Leg sequencing is then designed to allow the robot to maintain a constant body height and forward walking velocity. Dynamic simulations and experiments are conducted to evaluate the walking and steering performance. The results show that the robot is able to control its body orientation, maintain a constant body height, and achieve quasi-static locomotion stability.
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spelling doaj.art-56dbb735f3e24f699076e9c9c03e7e052023-11-23T10:26:44ZengMDPI AGRobotics2218-65812021-10-0110411410.3390/robotics10040114Reuleaux Triangle–Based Two Degrees of Freedom Bipedal RobotJiteng Yang0Wael Saab1Yujiong Liu2Pinhas Ben-Tzvi3Robotics and Mechatronics Laboratory, Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061, USARobotics and Mechatronics Laboratory, Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061, USARobotics and Mechatronics Laboratory, Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061, USARobotics and Mechatronics Laboratory, Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061, USAThis paper presents the design, modeling, analysis, and experimental results of a novel bipedal robotic system that utilizes two interconnected single degree-of-freedom (DOF) leg mechanisms to produce stable forward locomotion and steering. The single DOF leg is actuated via a Reuleaux triangle cam-follower mechanism to produce a constant body height foot trajectory. Kinematic analysis and dimension selection of the Reuleaux triangle mechanism is conducted first to generate the desired step height and step length. Leg sequencing is then designed to allow the robot to maintain a constant body height and forward walking velocity. Dynamic simulations and experiments are conducted to evaluate the walking and steering performance. The results show that the robot is able to control its body orientation, maintain a constant body height, and achieve quasi-static locomotion stability.https://www.mdpi.com/2218-6581/10/4/114bipedal robotreuleaux trianglemechanism designkinematicsdynamicssimulation
spellingShingle Jiteng Yang
Wael Saab
Yujiong Liu
Pinhas Ben-Tzvi
Reuleaux Triangle–Based Two Degrees of Freedom Bipedal Robot
Robotics
bipedal robot
reuleaux triangle
mechanism design
kinematics
dynamics
simulation
title Reuleaux Triangle–Based Two Degrees of Freedom Bipedal Robot
title_full Reuleaux Triangle–Based Two Degrees of Freedom Bipedal Robot
title_fullStr Reuleaux Triangle–Based Two Degrees of Freedom Bipedal Robot
title_full_unstemmed Reuleaux Triangle–Based Two Degrees of Freedom Bipedal Robot
title_short Reuleaux Triangle–Based Two Degrees of Freedom Bipedal Robot
title_sort reuleaux triangle based two degrees of freedom bipedal robot
topic bipedal robot
reuleaux triangle
mechanism design
kinematics
dynamics
simulation
url https://www.mdpi.com/2218-6581/10/4/114
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AT waelsaab reuleauxtrianglebasedtwodegreesoffreedombipedalrobot
AT yujiongliu reuleauxtrianglebasedtwodegreesoffreedombipedalrobot
AT pinhasbentzvi reuleauxtrianglebasedtwodegreesoffreedombipedalrobot