Accession Number : ADA194912

Title :   Sensor and Actuator Selection for Large Space Structure Control.

Descriptive Note : Student rept.,

Corporate Author : AIR COMMAND AND STAFF COLL MAXWELL AFB AL

Personal Author(s) : Delorenzo, Michael L

PDF Url : ADA194912

Report Date : Apr 1988

Pagination or Media Count : 41

Abstract : This paper presents an algorithm which aids the controls engineer in specifying a sensor and actuator configuration for regulation of large scale, linear, stochastic systems such as a large space structure (LSS). The algorithm uses a linear quadratic gaussian (LQG) controller, an efficient weight selection technique based upon successive approximation, and a measure of sensor and actuator effectiveness to provide a final sensor and actuator configuration. This configuration enables the closed-loop system to meet output specifications with minimal input power. The algorithm involves no complex gradient calculations and has proven numerically tractable for large linear models. Additionally, the algorithm provides the controls engineer information on the important design issues of actuator sizing, reliability, redundancy, and optimal number.

Descriptors :   *ALGORITHMS, *SPACE SYSTEMS, ACTUATORS, CLOSED LOOP SYSTEMS, CONFIGURATIONS, CONTROL, DETECTORS, EFFICIENCY, ENGINEERS, GRADIENTS, INPUT, LINEAR SYSTEMS, LINEARITY, MATHEMATICAL MODELS, OPTIMIZATION, OUTPUT, POWER, REDUNDANCY, RELIABILITY, SELECTION, SPECIFICATIONS, STOCHASTIC PROCESSES, WEIGHT, CONTROL THEORY, COMPUTATIONS, TELESCOPES

Subject Categories : Unmanned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE