The Effects of Shipboard Steering Machinery Dynamics on Rudder Roll Stabilization Systems

Abstract

The surface ship rolling motion equation is modeled as a second order system, with a natural frequency of omega n = 0.4/sec and a dimensionless damping ratio of zeta = 0.08. The model is subjected to a random forcing function, which has a Gaussian probability distribution and can be considered as white noise , and placed into State-Space for-in. State variable feedback of roll rate is applied and the system discretized to match digital control. Roll angle time histories are developed for a range of feedback gains and compared. Additionally, steering machinery dynamics are modeled by a first order system and time constants varied to determine the effects of rudder dynamics on the feedback system. rudder roll stabilization.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1991
Accession Number
ADA247140

Entities

People

  • Michael W. Wendel

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Closed Loop Systems
  • Computer Programs
  • Control Systems
  • Dynamic Response
  • Dynamics
  • Equations
  • Equations Of State
  • Feedback
  • Frequency
  • Naval Architecture
  • Noise
  • Probability
  • Probability Distributions
  • Sampling
  • Stabilization Systems
  • Steering
  • White Noise

Readers

  • Control Systems Engineering.
  • Naval Architecture and Marine Engineering.

Technology Areas

  • Space
  • Space - Spacecraft Maneuvers