Redundancy-allocation problem i.e. RAP is among the reliability optimization problems which make use of non-linear programming method to improve complex system. The objective this research paper through application Genetic Algorithm GA and Hybrid & Particle Swarm Optimization (H-GAPSO) on a RAP. Certain shortcomings have been seen when results are obtained by single algorithms. In order get...

Adopting classic redundancy-based fault-tolerant schemes in highly dynamic distributed computing systems does not necessarily result in the anticipated improvement in dependability. This primarily stems from statically predefined redundancy configurations employed within many classic dependability strategies, which as well known may negatively impact the schemes' overall effectiveness. In this ...

With Asymmetric Multiple Description Coding we address the transmission case where there is a plethora of communication paths between sender and receiver, all with a different bandwidth and different levels of reliability (in terms of packet loss rate). For this scenario we have several possibilities for coding and transmission at our disposal, namely Round-Robin transmission, Layered Coding, T...

This paper interests to the redundancy management of the over-actuated control systems. A new approach to manage the actuator redundancy, for the control allocation compared to the LQ method is proposed based on the reliability analysis. The aim is to preserve the health of the actuators and the availability of the system. The desired efforts and the control inputs are distributed and generated...

This paper develops a new system reliability design optimization model based on a series-parallel system, where each subsystem is composed of components that are chosen to optimize the system reliability, while considering uncertainty of future usage conditions. In previous research, component reliability is generally assumed to be known with certainty because the usage and operating stresses a...

In this paper, we present a practical approach for the joint reliability–redundancy optimization of multistate series–parallel systems. In addition to determining the optimal redundancy level for each parallel subsystem, this approach also aims at finding the optimal values for the variables that affect the component state distributions in each subsystem. The key point is that technical and org...

Components in cold-standby state are usually assumed to be as good as new when they are activated. However, even in a standby environment, the components will suffer from performance degradation. This article presents a study of a redundancy allocation problem (RAP) for cold-standby systems with degrading components. The objective of the RAP is to determine an optimal design configuration of co...

In this paper, we deal with a multi-level redundancy allocation problem for a multi-level system and system, modules and component levels in the system are simultaneously considered as candidates for redundancy. System availability and life cycle cost are used as the constraint and objective function, respectively, and are estimated by simulation. The level and degree of redundancy are determin...