Toward an Improved Understanding of Thruster Dynamics for Underwater Vehicles

Abstract

This paper proposes a novel approach to modeling the four quadrant dynamic response of thrusters as used for the motion control of ROV and AUV underwater vehicles. The significance is that these vehicles are small in size and respond quickly to commands. Precision in motion control will require further understanding of thruster performance than is currently available. The model includes a four quadrant mapping of the propeller blades lift and drag forces and is coupled with motor and fluid system dynamics. A series of experiments is described for both long and short period triangular, as well as square wave inputs. The model is compared favorably with experimental data for a variety of differing conditions and predicts that force overshoots are observed under conditions of rapid command changes. Use of the model will improve the control of dynamic thrust on these vehicles.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1995
Accession Number
ADA484524

Entities

People

  • Anthony J. Healey
  • David M. Miles
  • J. P. Brown
  • S. Cody
  • S. M. Rock

Organizations

  • Naval Postgraduate School

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Dynamic Response
  • Dynamics
  • Engineering
  • Experimental Data
  • Information Operations
  • Mechanical Engineering
  • Propeller Blades
  • Propulsion Systems
  • Square Waves
  • Thrusters
  • Underwater Vehicles
  • Vehicles

Readers

  • Aerodynamics/Aeronautics.
  • Coastal Oceanography
  • Robotics and Automation.

Technology Areas

  • Space
  • Space - Spacecraft Maneuvers