نتایج جستجو برای: electro mechanical equipment
تعداد نتایج: 324159 فیلتر نتایج به سال:
System Dynamics and Adaptive Control for MEMS Gyroscope Sensor Juntao Fei1,2 and Hongfei Ding2 1Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology 2College of Computer and Information, Hohai University, Changzhou, 213022, P. R. China Abstract: This paper presents an adaptive control approach for Micro‐Electro‐Mechanical Systems (MEMS) z‐axis gyroscope sensor....
This paper presents an intuitive yet effective in-situ thermal diffusivity testing structure and testing method. The structure consists of two doubly clamped beams with the same width and thickness but different lengths. When the electric current is applied through two terminals of one beam, the beam serves as thermal resistor and the resistance R(t) varies as temperature rises. A delicate ther...
One of promising possibilities of watching of damage course of material exposed to cyclic mechanical loading is using acoustic emission technique (AE). In the signal monitored on the surface of material, it is possible to identify course of a number of processes that appear both on the surface and inside the material of the construction. From this point of view, we can see that this method coul...
Sensor-rich systems typically employ extensive signal processing to detect and classify faults for fault isolation tasks. Sensor-poor systems, on the other hand, require models of the system structure and behavior and analytical redundancy techniques to make diagnostic inference. Because of the increasing availability of inexpensive, batch-fabricated micro-controllers and MEMS sensors, it is co...
The electro-mechanical (E/M) impedance response of a 1-D structure interrogated by a PZT wafer active sensor is modeled from first principles. Equations of motion for the flexural vibrations under moment excitation from the PZT wafer are developed. Solution in terms of normal modes with internal damping is obtained. General expressions for pointwise dynamic stiffness and pointwise dynamic compl...
MEASURING THE LINEAR AND NONLINEAR PROPERTIES OF ELECTRO-ACOUSTIC TRANSMISSION SYSTEMS F. Heinle, R. Rabenstein, and A. Stenger Lehrstuhl f ur Nachrichtentechnik, Universit at Erlangen-N urnberg frabe,[email protected] ABSTRACT Competitive audio consumer products require not only cheap signal processing hardware but also low-cost analog equipment and sound transducers. Th...
The future More Electric Aircraft (MEA) technology focus on increasing the use of electrical equipment to a larger extent, e.g. replacing conventional hydraulic and pneumatic actuators with electromechanical or electro hydrostatic actuators to reduce weight, cost and maintenance. Advances in enabling technologies of electric power generation, distribution, and utility equipment have made the us...
The fields of micro- and nanomechanics are strongly interconnected with the development micro-electro-mechanical (MEMS) nano-electro-mechanical (NEMS) devices, their fabrication applications. This article highlights biomimetic concept designing new nanodevices for advanced materials sensing
The current trend is toward requiring undersea vehicles, manned and unmanned, remotely operated or autonomous, to perform ever longer, more demanding, and increasingly critical missions. Longer duration Unmanned Underwater Vehicle (UUV) missions will depend on highly reliable control actuation to ensure mission success, survivability of high value payloads, and plausible deniability. This paper...
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