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This paper investigates the fault-tolerant shape control (FTSC) problem for stochastic distribution systems. The available information for the addressed problem is the input and the measurable output Probability Density Function (PDF) of the system. The system is subject to actuator faults. In this case, the main objective is to achieve fault-tolerant shape control so that the output PDF can track...
This paper studies the statistical characteristics of a type of fault detection schemes based on CUSUM(Cumulative Sum) test and present both analytical results and Monte-Carlo simulation results for the probability distribution of the detection delay and the time between false alarms. These results can find important applications in both design and analysis of active fault tolerant control systems.
A Bayesian formulation of quickest change detection in multiple on-off processes is obtained within a decision-theoretic framework. For geometrically distributed busy and idle times, we show that the optimal joint design of channel switching and change detection has a simple threshold structure under a mild condition. Extensions to arbitrarily distributed busy and idle times, in particular, heavy...
We consider the design of opportunistic spectrum access (OSA) strategies that allow secondary users to search for and exploit spectrum opportunities in unslotted primary systems. We formulate the joint design of OSA as a constrained partially observable Markov decision process (POMDP). A separation principle for the joint design of OSA is established under certain conditions on the false alarm probability...
We consider an opportunistic communication system consisting of multiple independent channels with time-varying states. We formulate the problem of optimal sequential channel selection as a restless multi-armed bandit process, for which a powerful policy-Whittle's index policy-can be implemented based on the indexability of the system. We obtain Whittle's index in closed-form under the average reward...
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