Mathematical modeling and computer simulation of a robotic rat pup

Authors:
Randall Bish;Sanjay Joshi;Jeffrey Schank;Jason Wexler
Affiliations:
Department of Mechanical and Aeronautical Engineering, University of California, Davis, CA 95616, United States;Department of Mechanical and Aeronautical Engineering, University of California, Davis, CA 95616, United States;Department of Psychology, University of California, Davis, CA, United States;Department of Mechanical and Aeronautical Engineering, University of California, Davis, CA 95616, United States
Venue:
Mathematical and Computer Modelling: An International Journal
Year:
2007

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Abstract

In this paper, we describe the mathematics and computer implementation of a robotic rat pup simulation. Our goal is to understand neurobehavioral principles in a mammalian model organism-the Norway rat pup (Rattus norvegicus). Our approach is unique in that animal, simulation, and robot studies occur in parallel and inform each other. Behavior is dependent on the nervous system, body morphology, physiology, environment, and the interactions among these elements. Autonomous robotics hardware models and their associated simulations allow the possibility of systematically manipulating variables in each of these elements in ways that would be impossible using live animals. Specifically, we describe the development and validation of a Newtonian-dynamics-based simulation of a robotic rat pup, including mathematical formulation and computer implementation. The computer simulation consists of three distinct components that interact to simulate robotic behavior: (1) dynamics of the robotic rat pup itself, including sensors and actuators, (2) environmental coupling dynamics of the robot arena with the robotic rat pup, and (3) the robot control algorithms as implemented on the physical robot. The mathematical formulation, software implementation, model identification, model validation, and an application example are all described.