Accession Number : AD0654375
Title : A STUDY OF THE INFLUENCE OF THE DYNAMIC PROPERTIES OF THE INLET FLUID ON THE STABILITY CHARACTERISTICS OF AN ACCELERATION SWITCHING HYDRAULIC SERVO,
Corporate Author : JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB
Personal Author(s) : Mark,W. D. ; Levine,G. A. ; Seamone,W.
Report Date : 05 FEB 1959
Pagination or Media Count : 67
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.
Descriptors : (*HYDRAULIC SERVOMECHANISMS, STABILITY), OSCILLATION, HYDRAULIC VALVES, FLUID DYNAMICS, HYDRAULIC EQUIPMENT, ACCELERATION, HYDRAULIC FLUIDS, MATHEMATICAL MODELS
Subject Categories : Hydraulic and Pneumatic Equipment
Distribution Statement : APPROVED FOR PUBLIC RELEASE