Accession Number : AD0832328

Title :   RESPONSE OF A LINEAR ACTUATOR PNEUMATIC SERVO TO AN EXTERNAL FORCE DISTURBANCE,

Corporate Author : GENERAL DYNAMICS SAN DIEGO CA CONVAIR DIV

Personal Author(s) : Halstenberg, R. V.

Report Date : 06 FEB 1959

Pagination or Media Count : 10

Abstract : One of the questions often raised about pneumatic servos is their apparent lack of stiffness to external force disturbances. It does not seem that a cylinder full of gas could be nearly so stiff as a cylinder full of hydraulic oil. However, when the cylinder full of gas has a servo loop around it, the corrective action of the servo loop must be considered. The transfer function from external force to piston displacement for pneumatic servo is derived. The servo is considered to be a piston and cylinder driven by an ideal closed-center valve. Both position and pressure feedback in combination are considered. Linearized equations are used and the validity of the results depends on the applicability of the linearized equations to the particular situation studied. (Author)

Descriptors :   (*PNEUMATIC SERVOMECHANISMS, RESPONSE), ACTUATORS, TRANSFER FUNCTIONS, FORCE(MECHANICS), PERFORMANCE(ENGINEERING), EQUATIONS, FEEDBACK, LINEAR SYSTEMS.

Subject Categories : Numerical Mathematics
      Hydraulic and Pneumatic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE