Accession Number : AD0782508

Title :   Application of Fluidic Concepts to Hydraulic Control Systems.

Descriptive Note : Technical note 1 Jul 72-30 Jun 73,


Personal Author(s) : Fashbaugh,R. H. ; Durlak,E. R.

Report Date : JUL 1974

Pagination or Media Count : 21

Abstract : This is the first of a two part test program to determine the feasibility of using fluidic concepts to develop a fluidic control unit that will detect and correct angular variations in position such as those experienced by a bulldozer blade during operation. The hydraulic proximity sensor is a key component in the control unit. Experimental test results are presented showing the evaluation of a fluidic proximity sensor using hydraulic oil as the working fluid. The sensor was designed by scaling a pneumatic proximity sensor using a constant value of Reynolds number as the scaling parameter. Test results show that the hydraulic proximity sensor will detect the distance of an object from the sensor by relating that distance to a pressure signal. The performance characteristics of the hydraulic sensor correlated well with those of the pneumatic sensor. The sensor jet force variation with distance was also determined. (Author)

Descriptors :   *Hydraulic equipment, *Fluidic control, Control systems, Hydraulic fluids, Hydraulic servomechanisms, Pressure, Detectors, Mathematical models

Subject Categories : Fluidics and Fluerics

Distribution Statement : APPROVED FOR PUBLIC RELEASE