This paper presents the models and methods for reliability synthesis for components of UAV flight control system: flight computer and navigation system. The developed reliability models depict different variants of faulttolerant designs including designes for systems with complex reliability behavior. They have a high level of adequacy, since effectiveness of detection and switching devices was...

The design of a fault tolerant system would be enhanced if a rapid prototyping approach could be conceived which allows fault tolerance to be modelled quickly, and faults simulated to analyse the behaviour of the system. This paper concentrates on how a functional specification language, and its environment, can be used to describe and investigate the properties of parallel fault tolerant syste...

A fast fault-tolerant controller structure is presented, which is capable of recovering from transient faults by performing a rollback operation in hardware. The proposed fault-tolerant controller structure utilizes the rollback hardware also for system mode and this way achieves performance improvements of more than 50% compared to controller structures made fault tolerant by conventional tech...

A fast fault-tolerant controller structure is presented, which is capable of recovering from transient faults by performing a rollback operation in hardware. The proposed fault-tolerant controller structure utilizes the rollback hardware also for system mode and this way achieves performance improvements of more than 50% compared to controller structures made fault tolerant by conventional tech...

In this paper, we deal with two important issues in relation to modular recon gurable manipulators, namely, the determination of the modular assembly con guration optimally suited to perform a speci c task and the synthesis of fault tolerant systems. We present a numerical approach yielding an assembly con guration that satis es four kinematic task requirements: reachability, joint limits, obst...

In this paper we compare the relative performance of two fault tolerant mechanisms dealing with repairable and non-repairable components that have failed. The relative improvement in the reliability and safety of a system with repairable components is calculated with respect to the corresponding system where the components are not repairable. The fault tolerant systems under study correspond to...

This investigation deals with the intelligent system for parallel fault-tolerant diagnostic tests construction. A modified parallel algorithm for fault-tolerant diagnostic tests construction is proposed. The algorithm is allowed to optimize processing time on tests construction. A matrix model of data and knowledge representation, as well as various kinds of regularities in data and knowledge a...

In this paper we propose a fault tolerant control method which is capable of mitigating steering and drive-train system failures. By utilizing the steering system and the drive-train system complementarily, the proposed method will not need an additional redundancy for the fault tolerant purpose. For the steering system failure which should be detected and managed rapidly, the proposed method u...