Digital Autopilot Sample Rate Selection Based on Control System Requirements

Abstract

The purpose of this paper is to discuss some considerations in the selection of a sample rate for the digital autopilot. The missile autopilot design which incorporates a digital computer or microprocessor(s) to implement the stability compensation equations requires considerations over and above those made for analog computer autopilots. Some of these considerations are: the selection of sampling frequency, the A/D converter wordlength, the phase lag contributed by the zero order data hold (i.e., the A/D converter), the transport lag in the digital computer, and the effects of sampling high frequency sensor and structural (bending) noise (foldover or aliasing).

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1975
Accession Number
ADA016874

Entities

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  • Edward E. Herbert

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  • Weapons Technologies

DTIC Thesaurus Topics

  • Actuators
  • Analog Computers
  • Analog Systems
  • Automatic Pilots
  • Computer Programs
  • Computers
  • Control Systems
  • Control Systems Engineering
  • Control Theory
  • Difference Equations
  • Differential Equations
  • Digital Computers
  • Engineers
  • Equations
  • Equations Of State
  • Frequency
  • Transfer Functions

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  • Aerospace Test and Evaluation
  • Integrated Circuit Design and Technology.
  • Regression Analysis.