Title

Motion Control Law Analysis of a Tethered Drive Mechanism in Space

Abstract

This thesis presents an analysis of the laws which control the motion of a tethered drive mechanism operating between the Space Station and a tethered platform. Control laws designed to minimize the driver time of transit are first analyzed, followed by a law designed to control short distance, close proximity maneuvers. The problem of conducting relatively quick, controlled maneuvers is addressed by employing the laws of Rupp, Swenson, and Lorenzini. The result shows the time of transit can be improved by adding a constant velocity interval to the control law profile at the time maximum velocity is attained. Further analysis shows greater time savings result when the deceleration phase of the control law is replaced with the mirror image of the acceleration profile. The solution to the close proximity control problem indicates maneuvers can be accomplished at lower levels of velocity and acceleration than the quicker, more time efficient control laws. Methods developed by Swenson and Rupp can be applied to improve the time efficiency of the close proximity maneuver while maintaining relatively low levels of velocity and acceleration.

Notes

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Graduation Date

1990

Semester

Spring

Advisor

Anderson, Loren A.

Degree

Master of Science (M.S.)

College

College of Engineering

Department

Mechanical Engineering and Aerospace Sciences

Degree Program

Mechanical Engineering

Format

Print

Language

English

Length of Campus-only Access

None

Access Status

Masters Thesis (Open Access)

Subjects

Dissertations, Academic -- Engineering; Engineering -- Dissertations, Academic

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