Modeling fault-tolerant system behavior

1998 ◽  
pp. 213-234
Author(s):  
Mario Dal Cin
Keyword(s):  
Fault Tolerant ◽  
System Behavior ◽  
Fault Tolerant System

A fault-tolerant system incorporating an Ada executive and 1750A processors

1986 ◽  
Author(s):  
David Butler
Keyword(s):  
Fault Tolerant ◽  
Fault Tolerant System

Fault-Tolerant Strategy for Real-Time System Based on Evolvable Hardware

2017 ◽  
Vol 26 (07) ◽  
pp. 1750111 ◽  
Author(s):  
Jie Wang ◽  
Jiwei Liu
Keyword(s):  
Real Time ◽  
Recovery Time ◽  
Fault Tolerant ◽  
Fault Tree Analysis ◽  
Repair Process ◽  
Evolvable Hardware ◽  
Target System ◽  
Time System ◽  
Real Time System ◽  
Fault Tolerant System

The evolvable hardware (EHW) is widely used in the design of fault-tolerant system. Fault-tolerant system is really a real-time system, and the recovery time is necessary in fault detection and recovery. However, when applying EHW, real-time characteristic is usually ignored. In this paper, a fault-tolerant strategy based on EHW is proposed. The recovery time, predicted by the fault tree analysis (FTA), is considered as a constraint condition. A configuration library is set up in the design phase to accelerate the repair process of the anticipated faults. An evolvable algorithm (EA) based on similarity is applied to evolve the repair circuit for the unanticipated faults. When the library reaches the upper, the target system is reconfigured by the EA-repair technology. Extensive experiments are conducted to show that our method can improve the fault-tolerance of the system while satisfying the real-time requirement on FPGA platform. In a long run system, our method can keep a higher fault recovery rate.

scholarly journals Comparing the Performance of Reference Trajectory Management and Controller Reconfiguration in Attitude Fault Tolerant Control

2018 ◽  
Vol 151 ◽  
pp. 04008
Author(s):  
Rouzbeh Moradi ◽  
Alireza Alikhani ◽  
Mohsen Fathi Jegarkandi
Keyword(s):  
Control Problem ◽  
Closed Loop ◽  
Fault Tolerant ◽  
Dynamic Performance ◽  
Fault Tolerant Control ◽  
Spacecraft Attitude ◽  
Reference Trajectory ◽  
System Behavior ◽  
Closed Loop System ◽  
Reference Trajectories

Reference trajectory management is a method to modify reference trajectories for the faulty system. The modified reference trajectories define new maneuvers for the system to retain its pre-fault dynamic performance. Controller reconfiguration is another method to handle faults in the system, for instance by adjusting the controller parameters (coefficients). Both of these two methods have been considered in the literature and are proven to be capable of handling various faults. However, the comparison of these two methods has not been considered sufficiently. In this paper, a controller reconfiguration mechanism and a reference trajectory management are proposed for the spacecraft attitude fault tolerant control problem. Then, these two methods are compared under the same conditions, and it is shown that the proposed controller reconfiguration has better performance than the proposed reference trajectory management. The reason is that the controller reconfiguration has more variables to modify the closed-loop system behavior.

Does your fault-tolerant system tolerate faults?

2018 ◽  
Author(s):  
Kamala Ramasubramanian ◽  
Peter Alvaro
Keyword(s):  
Fault Tolerant ◽  
Fault Tolerant System

FT-EST Framework: Reliability Estimation for the Purposes of Fault-Tolerant System Design Automation

2018 ◽  
Author(s):  
Jakub Lojda ◽  
Jakub Podivinsky ◽  
Ondrej Cekan ◽  
Richard Panek ◽  
Zdenek Kotasek
Keyword(s):  
System Design ◽  
Design Automation ◽  
Fault Tolerant ◽  
Reliability Estimation ◽  
Fault Tolerant System

Overview of a Fault-Tolerant System

1998 ◽  
pp. 109-121
Author(s):  
Angelo Pruscino
Keyword(s):  
Fault Tolerant ◽  
Fault Tolerant System

Fault-Tolerant system design in multiple operating modes using a structural model

2011 ◽  
pp. 549-556 ◽  
Author(s):  
B Conrard ◽  
V Cocquempot ◽  
S Mili
Keyword(s):  
System Design ◽  
Structural Model ◽  
Fault Tolerant ◽  
Fault Tolerant System ◽  
Operating Modes

scholarly journals Log Replication in Raft vs Kafka

2020 ◽  
Vol 65 (2) ◽  
pp. 66
Author(s):  
M. Petrescu ◽  
R. Petrescu
Keyword(s):  
Distributed Systems ◽  
Fault Tolerant ◽  
Consensus Algorithm ◽  
Correct Operation ◽  
Consensus Algorithms ◽  
Fault Tolerant System ◽  
Multiple Algorithms

The implementation of a fault-tolerant system requires some type of consensus algorithm for correct operation. From Paxos to View-stamped Replication and Raft multiple algorithms have been developed to handle this problem. This paper presents and compares the Raft algorithm and Apache Kafka, a distributed messaging system which, although at a higher level, implements many concepts present in Raft (strong leadership, append-only log, log compaction, etc.).This shows that mechanisms conceived to handle one class of problems (consensus algorithms) are very useful to handle a larger category in the context of distributed systems.

scholarly journals SOFTWARE IMPLEMENTED HARDWARE-TRANSIENT FAULTS DETECTION

2014 ◽  
pp. 26-30
Author(s):  
Goutam Kumar Saha
Keyword(s):  
Error Correction ◽  
Fault Tolerant ◽  
Low Cost ◽  
Transient Faults ◽  
Fault Tolerant System ◽  
Cost Approach ◽  
Run Time ◽  
Commodity Systems ◽  
Fail Safe ◽  
Register Error

This paper examines a software implemented self-checking technique that is capable of detecting processorregisters' hardware-transient faults. The proposed approach is intended to detect run-time transient bit-errors in memory and processor status register. Error correction is not considered here. However, this low-cost approach is intended to be adopted in commodity systems that use ordinary off-the-shelf microprocessors, for the purpose of operational faults detection towards gaining fail-safe kind of fault tolerant system.

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