Mr. Brian K. Taylor Profile

Brian K. Taylor

at Case Western Reserve Univ

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Proceedings Article | 16 April 2008 Paper

Modeling, validation and analysis of a Whegs robot in the USARSim environment

Brian Taylor, Stephen Balakirsky, Elena Messina, Roger Quinn

Proceedings Volume 6962, 69621B (2008) https://doi.org/10.1117/12.777604

KEYWORDS: Video, Physics, Device simulation, Calibration, Gait analysis, Visualization, Electromagnetic simulation, Space robots, Aerospace engineering, Virtual reality

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Simulation of robots in a virtual domain has multiple benefits. End users can use the simulation as a training tool to increase their skill with the vehicle without risking damage to the robot or surrounding environment. Simulation allows researchers and developers to benchmark robot performance in a range of scenarios without having the physical robot or environment present. The simulation can also help guide and generate new design concepts. USARSim (Unified System for Automation and Robot Simulation) is a tool that is being used to accomplish these goals, particularly within the realm of search and rescue. It is based on the Unreal Tournament 2004 gaming engine, which approximates the physics of how a robot interacts with its environment. A family of vehicles that can benefit from simulation in USARSim are Whegs^TM robots. Developed in the Biorobotics Laboratory at Case Western Reserve University, Whegs^TM robots are highly mobile ground vehicles that use abstracted biological principles to achieve a robust level of locomotion, including passive gait adaptation and enhanced climbing abilities. This paper describes a Whegs^TM robot model that was constructed in USARSim. The model was configured with the same kinds of behavioral characteristics found in real Whegs^TM vehicles. Once these traits were implemented, a validation study was performed using identical performance metrics measured on both the virtual and real vehicles to quantify vehicle performance and to ensure that the virtual robot's performance matched that of the real robot.

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