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Noise and vibration causes many problems in most of the industrial applications and they have grown in recent years. Active methods of controlling vibration has been of great interest for applications requiring low weight, lower energy consumption, ease of handling, safer operation due to reduced inertia, and high speed applications. Active control involves the use of sensors to sense the vibratory...
Much attention has been paid to networked control systems where remote sensors, a controller, and remote actuators communicate via a network. During this communication, there is a network delay caused by data transmission. Unless this delay is considered, it may degrade the control performance and destabilize the plant in the worst case. In this paper, we consider a networked control system where...
We report a novel interdigital sensor and actuator device based on branched tree-like carbon nanotubes (CNT) on silicon-based membranes with a high capacitance value. The presence of tree-like CNTs leads to a high overlap between interdigital fingers owing to their three dimensional nanometric features, hence increasing the value of the capacitance from 0.2 to 15 pF. The electromechanical behavior...
A diaphragm-type optical fiber pressure sensor, which has a sleeve for fiber insertion, is proposed, and its fundamental characteristics are demonstrated. The sleeve structure is fabricated by deep reactive ion etching (DRIE). The diaphragm with the sleeve is suitable for highly reliable and easy bonding between the sleeve and an optical fiber. The light intensity change by a Fabry-Perot interferometer...
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