Diagnosable Oriented Sensor Optimization In Discrete Event System

Diagnosis of discrete event systems, sensor research as an important part, sincethe sixties of the last century, with the increased complexity of the diagnosticmodeling when and diagnostic procedures for fault tracking and timely processingdifficulty the increase, combined with the agent the depth of the study, theoptimization of the sensor in the process to be more theory to follow, many sensoroptimization method followed.Discrete event system monitoring, detection system, established on the basis ofthe DES control those in need through the feedback control events through the system.It is necessary to establish a monitoring system in the diagnostic system, so by thesystem can be observed event and fault sequence analysis, resulting in the currentsystem health information, the actual implementation of observable events andunobservable events, control events and uncontrollable events classified analysis, youcan get the fault information.Optimization of the sensor means, which is able to ensure the normal operationof the premise, a sufficient observation sequence fault information, andsimultaneously to reduce the number of sensors because difficulty is expensive and itsimplementation in some environments of the sensor, is the smallest, so to ensureminimize sensor is sensor optimization.The sensor optimization algorithm mainly divided into the optimizationalgorithm of the sensor optimization and dispersed system in a centralized system ofthe sensor into two categories, from the system operating phase, in the diagnosticsystem, the optimization of the sensor can be divided at the beginning of the systemmodeling sensor optimization process of optimization of the sensor and diagnosticsystems run two aspects, in the beginning of the system modeling, to ensure that thesystem be able to diagnose the failure event, during operation, to be able to identifythe fault event, and were able to adjust The sensors distribution, accurate positioning.After in algorithm by Weilin.Wang people inspiration, sensor optimization, from the user’s specifications (specification), making the sensor optimization algorithm hasbeen improved and optimized, and also makes the calculation of fewer steps, andguarantee previously minimized and feasibility.Relatively small sensor optimized for the diagnostic process control research,technology and background knowledge in the initial stage, this only through theanalysis of the relevant literature, listed common centralized diagnostic system duringoperation sensor optimize algorithm and instances.