VNU-UET Repository: No conditions. Results ordered -Date Deposited. 2024-03-29T08:28:35ZEPrintshttp://eprints.uet.vnu.edu.vn/images/sitelogo.pnghttps://eprints.uet.vnu.edu.vn/eprints/2013-03-27T06:34:15Z2013-04-01T06:56:34Zhttp://eprints.uet.vnu.edu.vn/eprints/id/eprint/147This item is in the repository with the URL: http://eprints.uet.vnu.edu.vn/eprints/id/eprint/1472013-03-27T06:34:15ZSpatial Angular Positioning Device with Three-Dimensional Magnetoelectric SensorsThis paper reports on the development of a novel simple three-dimensional geomagnetic device for sensing the spatial azimuth and pitch positions by using three one-dimensional magnetoelectric sensors assembled along three orthogonal axes. This sensing device combines piezoelectric transducer plates and elongated high-performance Ni-based Metglas ribbons. It allows the simultaneous detection of all three orthogonal components of the terrestrial magnetic field. Output signals from the device components are provided in form of sine and/or cosine functions of both the rotation azimuth and the pitch angles, from which the total intensity as well as the inclination angle of the Earth's magnetic field is determined in an overall field resolution of better than 10-4 Oe and an angle precision of ±0.1°, respectively. This simple and low-cost geomagnetic-field device is promising for the automatic determination and control of the mobile transceiver antenna's orientation with respect to the position of the related geostationary satellite.D.T.H. Gianggiangdth@vnu.edu.vnP. A. DucN. T. NgocN. T. HienN.H. Ducducnh@vnu.edu.vn2013-01-14T04:42:37Z2013-04-01T06:55:19Zhttp://eprints.uet.vnu.edu.vn/eprints/id/eprint/118This item is in the repository with the URL: http://eprints.uet.vnu.edu.vn/eprints/id/eprint/1182013-01-14T04:42:37ZGeomagnetic Sensors based on Metglas/PZT LaminatesA potential geomagnetic-field sensor is proposed on the basis of an optimal 2D configuration of magnetoelectric Ni-based Metglas/PZT laminates. This sensor can perfectly serve to measure both the strength and the orientation of the earth's magnetic field. An incredibly high ME-voltage response of 0.871 V/Oe to the geomagnetic field with a resolution of 3 × 10−4 Oe has been achieved for composite laminates with a size of 15 mm × 1 mm. With respect to the field inclination, an angular sensitivity of 3.86 × 10−3 V/degree and an angular resolution of 10−1 degree have been determined. This simple and low-cost magnetic-field sensor is promising for applications not only as novel smart compasses and in global positioning devices, but also as magnetic biosensors.D.T.H. Gianggiangdth@vnu.edu.vnP.A. DucN.T. NgocN.H. Ducducnh@vnu.edu.vn