東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Small Satellite Passive Magnetic Att...

Gerhardt, David T.

FindBook

Google Book

Amazon

博客來

Small Satellite Passive Magnetic Attitude Control.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Small Satellite Passive Magnetic Attitude Control./
作者:	Gerhardt, David T.
面頁冊數:	219 p.
附註:	Source: Dissertation Abstracts International, Volume: 75-09(E), Section: B.
Contained By:	Dissertation Abstracts International75-09B(E).
標題:	Engineering, Aerospace. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3621325
ISBN:	9781303923623

Small Satellite Passive Magnetic Attitude Control.
Gerhardt, David T.

Small Satellite Passive Magnetic Attitude Control. - 219 p.

Source: Dissertation Abstracts International, Volume: 75-09(E), Section: B.

Thesis (Ph.D.)--University of Colorado at Boulder, 2014.

Passive Magnetic Attitude Control (PMAC) is capable of aligning a satellite within 5 degrees of the local magnetic field at low resource cost, making it ideal for a small satellite. However, simulation attempts to date have not been able to predict the attitude dynamics at a level sufficient for mission design. Also, some satellites have suffered from degraded performance due to an incomplete understanding of PMAC system design. This dissertation alleviates these issues by discussing the design, inputs, and validation of PMAC systems for small satellites.

ISBN: 9781303923623Subjects--Topical Terms:

1018395
Engineering, Aerospace.

Small Satellite Passive Magnetic Attitude Control.
LDR:02751nmm a2200313 4500 001 2055479
005 20150127125439.5
008 170521s2014 ||||||||||||||||| ||eng d
020 $a 9781303923623
035 $a (MiAaPQ)AAI3621325
035 $a AAI3621325
040 $a MiAaPQ $c MiAaPQ
100 1 $a Gerhardt, David T. $3 3169145
245 1 0 $a Small Satellite Passive Magnetic Attitude Control.
300 $a 219 p.
500 $a Source: Dissertation Abstracts International, Volume: 75-09(E), Section: B.
500 $a Adviser: Scott Palo.
502 $a Thesis (Ph.D.)--University of Colorado at Boulder, 2014.
520 $a Passive Magnetic Attitude Control (PMAC) is capable of aligning a satellite within 5 degrees of the local magnetic field at low resource cost, making it ideal for a small satellite. However, simulation attempts to date have not been able to predict the attitude dynamics at a level sufficient for mission design. Also, some satellites have suffered from degraded performance due to an incomplete understanding of PMAC system design. This dissertation alleviates these issues by discussing the design, inputs, and validation of PMAC systems for small satellites.
520 $a Design rules for a PMAC system are defined using the Colorado Student Space Weather Experiment (CSSWE) CubeSat as an example. A Multiplicative Extended Kalman Filter (MEKF) is defined for the attitude determination of a PMAC satellite without a rate gyro. After on-orbit calibration of the off-the-shelf magnetometer and photodiodes and an on-orbit fit to the satellite magnetic moment, the MEKF regularly achieves a three sigma attitude uncertainty of 4 degrees or less. CSSWE is found to settle to the magnetic field in seven days, verifying its attitude design requirement.
520 $a A Helmholtz cage is constructed and used to characterize the CSSWE bar magnet and hysteresis rods both individually and in the flight configuration. Fitted parameters which govern the magnetic material behavior are used as input to a PMAC dynamics simulation. All components of this simulation are described and defined. Simulation-based dynamics analysis shows that certain initial conditions result in abnormally decreased settling times; these cases may be identified by their dynamic response. The simulation output is compared to the MEKF output; the true dynamics are well modeled and the predicted settling time is found to possess a 20 percent error, a significant improvement over prior simulation.
590 $a School code: 0051.
650 4 $a Engineering, Aerospace. $3 1018395
650 4 $a Physics, Astronomy and Astrophysics. $3 1019521
650 4 $a Engineering, Computer. $3 1669061
690 $a 0538
690 $a 0606
690 $a 0464
710 2 $a University of Colorado at Boulder. $b Aerospace Engineering. $3 1030473
773 0 $t Dissertation Abstracts International $g 75-09B(E).
790 $a 0051
791 $a Ph.D.
792 $a 2014
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3621325