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By scrutinizing local propagation characteristics of damage-modulated guided waves (GWs), an in-situ health diagnosis technique, targeting in-service engineering structures, is developed. This technique characterizes structural damage quantitatively, regardless of its quantity, and consequently evaluates structural integrity in a real-time manner. A self-contained system is accordingly configured...
An online health monitoring system (OHMS) was tailor-made and implemented for structural health monitoring (SHM) of train structures. A sensor network made up of miniature piezoelectric wafers was configured on the bogie frames of China's latest high-speed train model. Ultrasonic guided waves were generated through the sensor network, and a variety of signal features were retrieved and fused by the...
In this paper, the main attention is focused on transient property of control input signal, we propose a novel model reference adaptive control scheme for time-continuous single-input single-output linear systems with input saturation. To improve a control performance, a novel estimator using an observer for the output tracking error signal is proposed. Using the estimator, it is shown theoretically...
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