WEKO3
アイテム
アナログ式太陽センサの精度向上および太陽ベクトル決定のためのデータ処理法
https://doi.org/10.18997/00006877
https://doi.org/10.18997/000068774b6a03c5-71ba-4b33-b7ea-deee463f7a3a
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
kou_k_444.pdf (5.4 MB)
|
|
| アイテムタイプ | 学位論文 = Thesis or Dissertation(1) | |||||||
|---|---|---|---|---|---|---|---|---|
| 公開日 | 2018-08-17 | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||||
| 資源タイプ | doctoral thesis | |||||||
| タイトル | ||||||||
| タイトル | Improvement of Analog Sun Sensor Accuracy and Data Processing for Sun Vector Determination | |||||||
| 言語 | en | |||||||
| タイトル | ||||||||
| タイトル | アナログ式太陽センサの精度向上および太陽ベクトル決定のためのデータ処理法 | |||||||
| 言語 | ja | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 著者 |
Faizullin, Dmytro
× Faizullin, Dmytro
|
|||||||
| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | HORYU-IV is a nanosatellite of Kyushu Institute of Technology (Kyutech), which was successfully launched on February 17, 2016. The satellite is a passively stabilized with the help of permanent magnets and a hysteresis dumper. HORYU-IV is equipped with pinhole sun sensors, GPS and gyro sensors. The sun sensor was originally designed by Kyutech. This sensor has a round-shaped hole and uses commercial off-the-shelf silicon photodiode, which consists of four small sensitive elements arranged close to each other. Incident light, focused through a pinhole, produces a spot on four diodes. Each diode’s output is a current proportional to the amount of light. Methods for calculation of a sun vector use analogue outputs from this type of sensors. This study introduces a polynomial equation to describe dependencies between sensor outputs. This treatment increases a field of view (FOV) with high accuracy (0.1 deg) twice as much as the linear one. Taking into account dead spaces between photodiodes is also considered. An ideal model of the sensor and 6 real sun sensors with different configurations (diameter of a pin hole and distance from a hole to photodiodes are varied) are made to verify the improvement by the proposed methods. The sensor is not able to detect a sun light continuously because of limited FOV. That is why a sun vector should be calculated with use of solar-cell output on the panel. As the measured currents obtained from the solar panel depend on the satellite’s power consumptions, the direct calculation of a sun vector gives poor accuracy. The satellite uses a MEMS gyro to detect attitude motions. Three parameters are used to adjust the sensor: gain, offset and temperature coefficient. Comparison between ground test and the in-orbit data showed that the sets of parameters have different values. This means that the gyro sensor needs on-board calibration. This dissertation proposes improvement of analog sun sensor accuracy as well as data processing for sun vector determination with the use of Extended Kalman Filter, outputs of the quadrant sun sensors, solar-panel currents and an uncalibrated gyro. | |||||||
| 言語 | en | |||||||
| 目次 | ||||||||
| 内容記述タイプ | TableOfContents | |||||||
| 内容記述 | 1 Introduction||2 Sun sensor design and methods for improving sun vector determination||3 Pre-processing of in-orbit sensors data HOYU-IV AODS||4 Attitude estimation and propagation for sun vector determination||5 Conclusion | |||||||
| 備考 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 九州工業大学博士学位論文 学位記番号:工博甲第444号 学位授与年月日:平成29年9月22日 | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Attitude Determination | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Sun Vector | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Pinhole Sun Sensor | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Quadrant Photodiode | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Small Satellite | |||||||
| アドバイザー | ||||||||
| 値 | 平木, 講儒 | |||||||
| 学位授与番号 | ||||||||
| 学位授与番号 | 甲第444号 | |||||||
| 学位名 | ||||||||
| 学位名 | 博士（工学） | |||||||
| 学位授与年月日 | ||||||||
| 学位授与年月日 | 2017-09-22 | |||||||
| 学位授与機関 | ||||||||
| 学位授与機関識別子Scheme | kakenhi | |||||||
| 学位授与機関識別子 | 17104 | |||||||
| 学位授与機関名 | 九州工業大学大学 | |||||||
| 学位授与年度 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 平成29年度 | |||||||
| 出版タイプ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
| アクセス権 | ||||||||
| アクセス権 | open access | |||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||
| ID登録 | ||||||||
| ID登録 | 10.18997/00006877 | |||||||
| ID登録タイプ | JaLC | |||||||
