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| Presentation | 2015-04-17 09:50 A Proposal of Time-Lag-Less n-Fault-Tolerant Control System Hitoshi Iwai  CPSY2015-3 DC2015-3 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In a conventional multi-modular majority voting redundancy for real-time hazard control the first processing step is that function modules produce output data, the second step is that they transfer the data for majority-voting, and the final step is that a system outputs the data to external equipment such as an actuator. Thus it is a problem that it takes time-lag from function modules to external equipment. And even though you choose as much dependable system as possible, some failures of an actuator cannot be prevented perfectly. Then some errors may be output. The fault-masking effect of multi modular redundancy is restricted. On the other hand there are some design guidelines that a system should detect any failures and recover functions within time to hazardous events and/or time to out-of-containment. Then the requirement is not to mask some errors for external but to detect any failures and recover functions within required time. We propose “n-fault-tolerant system with voting switches”. In this configuration, because actuators are connected to function-modules directly, function modules can produce output data and output the data to external equipment, this system detects any failures by majority voting, isolates them and recovers functions within one control period. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Fault Tolerant / Fail Safe / Voting Switches / N-Modular Redundancy / TMR / NMR / / | |
| Reference Info. | IEICE Tech. Rep., vol. 115, no. 8, DC2015-3, pp. 13-18, April 2015. | |
| Paper # | DC2015-3 | |
| Date of Issue | 2015-04-10 (CPSY, DC) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | CPSY2015-3 DC2015-3 |
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| Conference Information | |
| Committee | DC CPSY |
| Conference Date | 2015-04-17 - 2015-04-17 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | DC |
| Conference Code | 2015-04-DC-CPSY |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Proposal of Time-Lag-Less n-Fault-Tolerant Control System |
| Sub Title (in English) | |
| Keyword(1) | Fault Tolerant |
| Keyword(2) | Fail Safe |
| Keyword(3) | Voting Switches |
| Keyword(4) | N-Modular Redundancy |
| Keyword(5) | TMR |
| Keyword(6) | NMR |
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| Keyword(8) | |
| 1st Author's Name | Hitoshi Iwai |
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| Speaker | Author-1 |
| Date Time | 2015-04-17 09:50:00 |
| Presentation Time | 25 minutes |
| Registration for | DC |
| Paper # | CPSY2015-3, DC2015-3 |
| Volume (vol) | vol.115 |
| Number (no) | no.7(CPSY), no.8(DC) |
| Page | pp.13-18 |
| #Pages | 6 |
| Date of Issue | 2015-04-10 (CPSY, DC) |
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