000			03649nam a22003735i 4500
001			279109
003			MX-SnUAN
005			20170705134201.0
007			cr nn 008mamaa
008			150903s2008 xxu| o |||| 0|eng d
020			_a9780387787930 _99780387787930
024	7		_a10.1007/9780387787930 _2doi
035			_avtls000332959
039		9	_a201509030222 _bVLOAD _c201404122317 _dVLOAD _c201404092054 _dVLOAD _y201402041059 _zstaff
040			_aMX-SnUAN _bspa _cMX-SnUAN _erda
050		4	_aTJ210.2-211.495
100	1		_aGawronski, Wodek. _eeditor. _9303255
245	1	0	_aModeling and Control of Antennas and Telescopes / _cedited by Wodek Gawronski.
264		1	_aBoston, MA : _bSpringer US, _c2008.
300			_brecurso en línea.
336			_atexto _btxt _2rdacontent
337			_acomputadora _bc _2rdamedia
338			_arecurso en línea _bcr _2rdacarrier
347			_aarchivo de texto _bPDF _2rda
490	0		_aMechanical Engineering Series, _x0941-5122
500			_aSpringer eBooks
505	0		_aModeling -- Analytical Models -- Models from Identification -- Model Reduction -- Wind Disturbance Models -- Control -- Preliminaries to Control -- PI and Feedforward Controllers -- LQG Controller -- H ? Controller -- Single Loop Control -- Non-Linear Control -- RF Beam Control -- Track-Level Compensation.
520			_aModeling and Control of Antennas and Telescopes presents the author’s research and field experience in the area of antenna modeling, dynamics, and control. The required spacecraft tracking accuracy of 1 mdeg was the impetus for the new approaches to the antenna controls that use model based controllers (LQG and H¥ ). Consequently, modeling also required a new approach using system identification techniques. Most of the material presented is new in the telescope industry. The methods have been not only analyzed and tested, but actually implemented, giving confidence in the final result, which is significantly increased antenna pointing accuracy. The author explains two different approaches to telescope modeling: analytical and experimental. The analytical approach combines the structural and drive model, using Matlab and Simulink. The experimental, uses the test data to obtain the equations of the antenna model. Both models are excessively large and the model reduction techniques included make the model size small enough for the controller design purposes. The book also covers the wind models based on the wind tunnel data (steady-state), and on the field data (gusts) since wind gusts are the main antenna disturbance. The book shows the PI and feedforward controller tuning and their performance as a benchmark for measuring the pointing improvement when the LQG and H¥ are implemented. The properties, performance, and tuning of the LQG and H¥ are also presented. The material explains the nonlinear control issues such as velocity and acceleration limits, friction, and backlash. It also covers RF beam control techniques (scanning and monopulse), and the open loop control of the track level unevenness. Modeling and Control of Antennas and Telescopes serves as a useful reference for students and engineers in the area of antenna modeling, dynamics, and control.
590			_aPara consulta fuera de la UANL se requiere clave de acceso remoto.
710	2		_aSpringerLink (Servicio en línea) _9299170
776	0	8	_iEdición impresa: _z9780387787923
856	4	0	_uhttp://remoto.dgb.uanl.mx/login?url=http://dx.doi.org/10.1007/978-0-387-78793-0 _zConectar a Springer E-Books (Para consulta externa se requiere previa autentificación en Biblioteca Digital UANL)
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999			_c279109 _d279109