Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10420953 | Reliability Engineering & System Safety | 2005 | 7 Pages |
Abstract
For a fault-tolerant SBW (Steer-By-Wire) system, two structural designs with and without a backup mechanical coupling are proposed and assessed by a unified approach from a reliability point of view. An operation procedure to cope with partial system degradations prior to a complete loss of steering is presented for each design. The procedure can be represented by a transition diagram that, in turn, is converted into a layered Markov state transition diagram by introduction of augmented states. Reliabilities of the two designs are quantitatively compared by numerical integration of the Markov diagrams based on realistic failure rate data; system degradation probabilities are obtained as well as the complete steering loss probability. A power source is identified as a key component for the SBW to function without a mechanical backup.
Related Topics
Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
G. Zuo, H. Kumamoto, O. Nishihara, R. Hayama, S. Nakano,