A STUDY OF THE INFLUENCE OF THE DYNAMIC PROPERTIES OF THE INLET FLUID ON THE STABILITY CHARACTERISTICS OF AN ACCELERATION SWITCHING HYDRAULIC SERVO,

Abstract

Certain tubing configurations and some lengths of line have been known to cause servo instability in flow control servos. This type of instability generally results in a low amplitude low frequency limit cycle oscillation. The mechanism precipitating this problem, its analytical description, proposed solutions and experimental verification were the basis of the study. Since the valve stability depends largely on the acoustic properties of the hydraulic fluid supply line, the analysis necessarily considers supply line characteristics as well as the valve characteristics.

Document Details

Document Type
Technical Report
Publication Date
Feb 05, 1959
Accession Number
AD0654375

Entities

People

  • G. A. Levine
  • W. D. Mark
  • W. Seamone

Organizations

  • Johns Hopkins University Applied Physics Laboratory

Tags

DTIC Thesaurus Topics

  • Acoustic Properties
  • Amplitude
  • Flow
  • Fluids
  • Frequency
  • Hydraulic Fluids
  • Hypervelocity Flow
  • Instability
  • Motion
  • Oscillation
  • Physical Properties
  • Switching
  • Verification

Readers

  • Electrical Engineering
  • Fluid Dynamics.
  • Theoretical Analysis.