Engineering topics

Roy, R. J.

Publications and source records attributed to Roy, R. J..

15 records

NASA NTRS1972

An improved general algorithm for arbitrary pole assignment.

A new pole-placement algorithm for multi-input controllable systems is presented. The algorithm can be used to obtain real-valued feedback gains for arbitrarily specified real and complex, distinct or multiple eigenvalues. The multi-input controllable time-invariant system is converted to a single-input system. Pole assignment is achieved by making use of certain properties of the equation TF - AT = D, where A is the open-loop system matrix and F represents a matrix having the desired closed-loop eigenvalues.

Willner, L.↗

NASA NTRS1972

Stabilization of linear multivariable systems by output feedback.

A method is developed for improving the stability of linear multivariable systems using output feedback. The technique, which utilizes a gradient approach, has been mechanized in a digital computer program. Illustrative results are given for a seven-state two-feedback model of the Saturn V booster.

Mcbrinn, D. E.↗

NASA NTRS1970

Analog sensitivity design of Saturn V launch vehicle

Saturn 5 launch vehicle control system optimal desensitization with feedback, using analog computer for sensitivity design

Rillings, J. H.↗

NASA NTRS1970

The application of specific optimal control to the design of desensitized model following control systems

Desensitized linear servo model following feedback control systems design using specific optimal control concepts

Roy, R. J.↗

NASA NTRS1970

Sensitivity design of output feedback controllers

Output feedback control systems design, considering closed loop system sensitivity to plant parameters based on linear optimal control problem

Cassidy, J. F., Jr.↗

NASA NTRS1968

Pitch control of a flexible launch vehicle.

Adaptive controller technique for design of optimal pitch control for flexible launch vehicle of Saturn class

Jenkins, K. W.↗

NASA NTRS1968

Design of model reference adaptive control systems by Liapunov's second method.

Model reference adaptive control system redesign by Liapunov second method for linear systems

Roy, R. J.↗

NASA NTRS1967

A learning technique for Volterra series representation.

System identification learning method based on pattern recognition involving on-line error correction procedure for Volterra series system representation

Roy, R. J.↗

NASA NTRS1967

Two viewpoints of k-tuple pattern recognition.

Two viewpoints of k-tuple pattern recognition, statistical approximation technique and special case of learning machine

Roy, R. J.↗

NASA NTRS1967

Bang-bang control strategy using a tabular adaptive model.

Bang-bang control using adaptive-predictive model applied to least-square error trajectory control of settling-time nonlinear systems

TRAJECTORY CONTROL↗

NASA NTRS1966

A design procedure for discrete adaptive control systems.

Design synthesis of adaptive control system for linear discrete plants with time varying parameters, noisy measurements and statistical and deterministic disturbances

ADAPTIVE CONTROL SYSTEM↗

NASA NTRS1966

Control of a nonlinear plant with two level input using a tabular adaptive-predictive model.

Tabular adaptive predictive model for trajectory following control of nonlinear plant with switched two-level input

NONLINEAR SYSTEM↗

NASA NTRS1964

Nonlinear process identification using statistical pattern matrices

NONLINEAR SYSTEM↗

NASA NTRS1964

A hybrid computer for adaptive nonlinear process identification.

Synchronous sequence hybrid computer model for continuous adaptive nonlinear processes

ADAPTIVE CONTROL SYSTEM↗

NASA NTRS1962

SEMIANNUAL STATUS REPORT NO. 1 <TO THE< NATIONAL AERONAUTICS AND SPACE ADMINISTRATION, MAR. 1 - SEPT. 1, 1962 <AN ADAPTIVE MODEL FOR NONLINEAR PROCESS IDENTIFICATION<

Adaptive model for nonlinear process identification

NONLINEARITY↗