| Item type |
テクニカルレポート / Technical Report(1) |
| 公開日 |
2015-03-26 |
| タイトル |
|
|
タイトル |
A Digital Controller for Active Aeroelastic Controls |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_18gh |
|
資源タイプ |
technical report |
| その他のタイトル |
|
|
その他のタイトル |
空力弾性能動制御用デジタルコントローラ |
| 著者 |
上田, 哲彦
室田, 勝一
UEDA, Tetsuhiko
MUROTA, Katsuichi
|
| 著者所属 |
|
|
|
航空宇宙技術研究所機体部 |
| 著者所属 |
|
|
|
航空宇宙技術研究所空力性能部 |
| 著者所属（英） |
|
|
|
en |
|
|
Airframe Division, National Aerospace Laboratory(NAL) |
| 著者所属（英） |
|
|
|
en |
|
|
Aircraft Aerodynamics Division, National Aerospace Laboratory(NAL) |
| 出版者 |
|
|
出版者 |
航空宇宙技術研究所 |
| 出版者（英） |
|
|
出版者 |
National Aerospace Laboratory(NAL) |
| 書誌情報 |
航空宇宙技術研究所報告
en : Technical Report of National Aerospace Laboratory TR-1014
巻 1014,
p. 25,
発行日 1989-02
|
| 抄録（英） |
|
|
内容記述タイプ |
Other |
|
内容記述 |
A high-speed digital controller for aeroelastic controls was designed and made. The purpose was to minimize adverse phase lag which is inevitably produced by the CPU time of digital processing. The delay deteriorates control performances on rather rapid phenomena like aircraft flutter. With fix-point operation the controller realized 417 microseconds of throughput time including the A/D and D/A conversion. This corresponds to a high sampling rate of 2.4kHz. The controller furnishes two channels, each of which can be implemented with up to the eighth order control laws allowing the coupling terms. Control laws can be loaded by changing coefficients for multiplication in its expansion form. These coefficients are calculated and transferred by a peripheral computer through the GP-IB busline. At the stage of D/A conversion, the number of bit-shifts associated with a scaling is made programmable to avoid overflow and to lessen inaccuracy due to the truncation error. A sample period is also selectable through the GP-IB busline. This period ranges from 1 ms to 500μs. In the appendix, a program is presented for converting from the continuous transfer function in the Laplace domain to a discrete transfer function in the z-domain with the aid of Tustin’s approximation. |
| ISSN |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
0389-4010 |
| 資料番号 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
資料番号: NALTR1014000 |
| レポート番号 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
レポート番号: NAL TR-1014 |
naltr01014.pdf (2.6 MB)
