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An integrated design of fault diagnosis and adaptive fault-tolerant robust control for a submarine with bow and stern rudder faults is proposed in this paper. Considering the disturbance coming from waves when a submarine operates near sea surface, a simplified linear system with both wave disturbance and the bow and stern rudder faults for submarine's vertical movement is presented. An unknown input...
A fault diagnosis and fault-tolerant control approach is proposed which is based on extended state observer for systems with random disturbance and incipient actuator faults. Firstly, random disturbance and incipient fault are put in the extended state of ESO, thus the incipient fault can be diagnosed without using the residual. Then, the optimal fault-tolerant and dynamic self-repairing control can...
The present situation of rural distribution network fault location is analyzed. The characteristics of fault calling information of distribution network were discussed. On this basis the rural distribution network fault location algorithms theory based on rough set was proposed. The decision table in accordance with distribution network topology was the main tool of the algorithm, using the ability...
Diagnosability have played an important role in measuring the reliability of multiprocessor systems. As an enhancement on the hypercube, the augmented cube, not only retains all the favorable properties of the hypercube but also possesses some properties which are not shared by the hypercube and its variations. In this paper, under the PMC model, we prove that the n-dimensional augmented cube AQn...
This paper proposes a feedback-loop infrastructure attached to our legacy multimedia streaming system to continually monitor its activities and performance and rapidly recover the system from failures or error states. Our infrastructure consists of four components: monitors with sensors to measure and record the activities and state of among the components of the running system, analyzer to interpret...
In this paper, we model a novel topology for cluster-based wireless sensor networks (MforW). Numerical simulations indicate that MforW has scale-free properties. Scale-free networks are inherently robust and efficient. By using the concept of network efficiency, we investigate the effect of attacks on the network. We find that MforW provides fault tolerance and avoids the effect of cluster head failures...
We present a topology control algorithm for multi-hop wireless sensor networks with preferential attachment rule. Each node controls its transmission power, and decides its nearest neighbouring node set in order to preferentially link from a new node. Our objective is to use preferential attachment rule to establish a topology based on the scale-free model which has good overall performance in terms...
Schedulability analysis based the worst-case response time is an important research issue in real-time systems. Due to the restriction that the traditional schedulability analysis for fault-tolerant real-time systems only considered that the deadline of each task must be no larger than its period, this paper extends the computation model that the deadline of each task can be longer than its period...
Topology control for fault tolerant communication is one of the important issues in wireless sensor networks. This paper presents a simple mechanism of fault tolerant topology control for generating undirected scale-free networks, where the network evolution is determined by the rules of growth and preferential attachment. The authors prove that this mechanism produces scale-free networks with degree...
The fault diagnosis and close-loop tolerant PID control for nonlinear multi-variables system under multiple sensor failures are investigated in the paper. A complete FDT architecture based on software redundancy is proposed to efficiently handle the fault diagnosis and the accommodation for multiple sensor failures in online situations. The methods colligates the adaptive threshold technique with...
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