ABSTRACT In order to gain an advantage in the fierce market competition, enterprises need establish a continuous and strict evaluation system for product quality. addition, complexity of mechatronic products requires that method must be able reflect quality information comprehensively. However, current approaches often grapple with subjectivity do not fully mine data. A novel methodology grounded clustering decision principles is introduced this study. Initially, self‐organizing map (SOM)...

This paper proposes a Block-shifting Simulated Annealing (BSA) algorithm for the no-wait flowshop scheduling problem (NWFSP) to minimize makespan. The proposed makes use of objective incremental properties NWFSP and embeds block-shifting operator based on k-insertion moves into framework simulated annealing. A major advantage BSA lies in its easy implementation since it does not involve sophisticated evolutionary strategy parameter tuning process. In addition simplicity, is shown be very...

Reliability analysis of critical computer-based systems is often performed using software tools, typically fault tree analysis. Many tools are available, either commercially or from university research groups, and each tool uses different solution techniques, ranging fast approximations to more complex such as Markov binary decision diagrams. Analysts thus faced with the difficult task validating a which being considered for use in real application. One approach verification might be select...

Binary Decision Diagrams (BDDs) and their exten-sions multiple-valued decision diagrams (MDDs) have been adapted for reliability analysis of fault tolerant systems. Par-ticularly, the MDDs are used to solve traditional coveragemodels (CMs) where an uncovered component failure maylead system without constraint. This paper presentsa new family diagrams, generalized (GMDDs) latest irrelevancy coverage model (ICM). In contrast CMs, ICM can detect isolate components whenever they become...

Dynamic fault tree (DFT) is an extension of traditional static tree, in which several dynamic gates are introduced to model sequential dependency between events. As for the quantitative analysis DFT, binary decision diagram (SBDD) has been proposed by incorporating nodes into (BDD). With SBDD, a DFT can be reduced sum disjoint products (SDP) basic events and nodes, avoid space explosion problem exponential complexity caused Markov chain inclusion/exclusion based solutions, respectively....

In a phased-mission system (PMS), an uncovered component fault may lead to mission failure regardless of the status other components, and reliability can be analyzed with traditional imperfect coverage model (IFCM). The IFCM, however, only considers faulty components. Recently, irrelevancy (ICM) is proposed cover both components irrelevant but analysis limited normal non-phased systems. This paper first demonstrates that, also important in PMSs, as initially relevant could become later due...

Prediction of subgrade settlement is a complex problem involving various uncertainty factors. To overcome the defects and limitations single prediction model, combined model based on improved set pair analysis was proposed to take into account certainty make degree, criterion relationship optimized. In first constructed express between predicted measured values. Then risk identification expressed Bayesian decision theory, optimal obtained by adaptive search algorithm. Next, data analyzed get...

<p>Cold-standby systems have been widely used for conditions with limited power, which achieve fault tolerance and high-reliability systems. The cold spare (CSP) gate is a common dynamic in the tree (DFT). DFT CSP gates typically to model cold-standby system reliability analysis. In general, inputs of are considered be basic events. However, requirement current design, may either events or top subtrees. Hence, sequence-dependency among becomes much more complex. early conditional...

For systems subject to imperfect fault coverage, ternary decision diagrams (TDDs) can be used for reliability analysis, as the component state becomes ternary, namely, operational, failed in a covered mode, and an uncovered mode. There are different coverage models (CMs), including traditional model (IFCM) its new extension irrelevance (ICM). The ICM extends irrelevant components addition but is limited monotonic so far. In addition, TDDs CMs developed based on operation rules, only specific...

Fault localization is the critical but most expensive step in testing manufacturing software, effectively locating faults has become an increasingly concerned study. The existing spectrum-based fault techniques utilize spectrum information and specific prioritization algorithm to gener ate suspiciousness as well ranking of statements. However, effectiveness software would be dramatically reduced once statement involving bug assigned with same other non-faulty A multi-technique fusion...

The reliability-redundancy allocation problem (RRAP) has been widely investigated during the last decade. In most of existing studies, component failures are assumed to be covered perfectly which means all faults can timely detected, located, and isolated. However, coverage could imperfect in reality a not-covered failure may lead system without constraint. this paper, RRAP is solved considering fault model (IFCM, only faulty components covered) irrelevance (ICM, both irrelevant covered). It...

Dynamic fault trees (DFT) with priority-AND (PAND) gates are widely used in modeling systems sequence-dependent failure behavior. We defined events as Boolean variables, and we show that by adding to a new operator denoted PRIOR introducing the conditioning events, it is possible mode behaviors between components PAND gate. A set of theorems based on provided express structure-function sum-of-products canonical form. Then, propose two rules generate hybrid binary decision diagram (HBDD)...

In this paper, we introduce Crane, a new software tool for reliability analysis of systems subject to perfect and imperfect fault coverage. Crane supports qualitative quantitative traditional trees, coverage model (IFCM), irrelevancy (ICM). ICM is which can detect isolate irrelevant components in addition faulty components, such that the not-covered faults will not affect system anymore. The available third-party tools. A generalized multiple-valued decision diagram algorithm implemented it...

This paper proposes a method to analyze the component relevance and failure propagation in system subjected imperfect fault coverage (IFC). In fault-tolerant systems, uncovered failures may directly lead because non-isolated propagate through system, or cannot be reconfigured eliminate impact of relevant failures. The effect components is studied divided into propagated non-propagated according whether effects could spread. fault-tolerance described by isolation phase reconfiguration this...

The irrelevance coverage model (ICM) is an extension of the imperfect fault (IFCM), which considers both uncovered failure and component irrelevance. In ICM, irrelevant cannot occur since it will be isolated (shutdown) from system. traditional triggered by a covered failure. However, in multi-state system (MSS), degrade state operational components may also cause other to irrelevant. To address this issue, minimal trigger (MIT) redefined for MSS analyzing relation between states demand....

This paper presents a feasibility and effective ap-proximation method to estimate the failure probability of top event dynamic fault tree. The is based on minimal canonical form uses quantitative relationship between smallest cut sequence entire sequence. Comparison with discrete-time Bayesian networks Monte Carlo simulation methods, validity this assessed two case studies approximating probabilities Hypothetical Cardiac Assist System (HCAS) fictitious system. study results show that our can...