Type of Document	Master's Thesis
Author	Feltner, D. James
URN	etd-02022010-020046
Title	An investigation into the stability of redundant controller voting schemes
Degree	Master of Science
Department	Electrical Engineering
Advisory Committee	Advisor Name Title Grigsby, L. L. Committee Chair Nunnally, Charles E. Committee Member VanLandingham, Hugh F. Committee Member
Keywords	Electric controllers
Date of Defense	1990-05-05
Availability	restricted
Abstract Redundant controllers are being designed to provide improved system reliability to meet the needs of various applications. In some implementations of these systems unacceptable system transients have occured when a single-controller failure occurs. The problem has been treated using case-by-case correction which is not sufficiently general in application to meet the needs of systems which may be user-programmed. Redundant control systems generalized as ideal and nonideal using two specific voting schemes are examined to gain insight into theoretical characterization of their performance under single-point failure modes and the limitations of applicability for the characterizations. State-model computer simulation is used to demonstrate the characterizations. A suggested direction for a general solution to the problem based on the chatacterizations is described.
Files	Filename       Size       Approximate Download Time (Hours:Minutes:Seconds)     28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access  LD5655.V851_1990.F467.pdf 2.05 Mb 00:09:30 00:04:53 00:04:16 00:02:08 00:00:10 next to an author's name indicates that all files or directories associated with their ETD are accessible from the Virginia Tech campus network only.

If you have questions or technical problems, please Contact DLA.