Stabilization of a Digitally Controlled Active-Isolation System,

Abstract

Digital control techniques have roved beneficial in many control applications because the are flexible and lend themselves to adaptive implementation. However, in control system that require feedback rather than feedforward as the control mechanism, the advantages of digital control are offset by the difficulty of designing stable controllers. The time lag introduced by anti-aliasing filters. These lags, in conjunction with low sampling rates, make an otherwise stable system subject to instability if high open-loop gains are required. This paper will focus on a technique for adding an empirical model of the system under control the control loop as a means of stabilizing the system.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1991
Accession Number
ADA235646

Entities

People

  • A. D. Mccleary
  • M. D. Mccollum
  • S. E. Forsythe

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Sensors
  • Space

DTIC Thesaurus Topics

  • Acoustics
  • Closed Loop Systems
  • Control Systems
  • Control Systems Engineering
  • Electrical Engineering
  • Engineering
  • Equations
  • Feedback
  • Flexible Structures
  • Fluid Dynamics
  • Frequency
  • Mechanical Engineering
  • Military Research
  • Simulations
  • Turbines
  • Underwater Sound
  • Wave Propagation

Readers

  • Control Systems Engineering.
  • Image Processing and Computer Vision.
  • Systems Analysis and Design