In this study we utilize the self-sensing capabilities of piezoelectric micro-actuators in hard disk drives (HDD) to actively suppress in-plane resonance modes of the suspension in an HDD. The self-sensing circuit is based on a tunable capacitance bridge that decouples the control signal from the sensing signal in the micro-actuator. A hybrid modeling technique based on a realization algorithm ...

Abstract The continuous increase in communication capacity is accompanied by an transmission frequency, which creates new demands on the efficiency modern. Signal relay can distance, however, conventional repeaters signal a specified direction, difficult to accommodate when receiving device suddenly appears around repeater. In this work, we propose repeater, implemented adaptively reconfigurabl...

Artificial Muscles A flexible electric artificial muscle capable of self-sensing and rapidly adjusting the stiffness along stretching direction is developed referencing biological smooth contraction. The integrated function enables fast response to stimuli simplifies control actuation-sensing system, which opens up new possibilities for advancing soft robotics wearable medical rehabilitation de...

Compressed Sensing (CS) seeks to recover an unknown vector with N entries by making far fewer than N measurements; it posits that the number of compressed sensing measurements should be comparable to the information content of the vector, not simply N . CS combines the important task of compression directly with the measurement task. Since its introduction in 2004 there have been hundreds of ma...

The use of wireless sensor networks for gathering environmental and safety-critical data in real time is increasing at a rapid rate. Some of the main criteria in designing sensor network architectures are energy-efficiency, self-management and self-healing. However, most protocols for data gathering and routing in sensor networks implicitly assume a regular rate of data gathering by individual ...

The etiologic agent of bubonic plague, Yersinia pestis, senses self-produced, secreted chemical signals in a process named quorum sensing. Though the closely related enteric pathogen Y. pseudotuberculosis uses quorum sensing system to regulate motility, the role of quorum sensing in Y. pestis has been unclear. In this study we performed transcriptional profiling experiments to identify Y. pesti...