@inproceedings{oai:jaxa.repo.nii.ac.jp:00007954,
 author = {嶋田, 貴信 and 大槻, 真嗣 and 石上, 玄也 and 豊田, 裕之 and 久保田, 孝 and Shimada, Takanobu and Otsuki, Masatsugu and Ishigami, Genya and Toyota, Hiroyuki and Kubota, Takashi},
 book = {第30回宇宙エネルギーシンポジウム, 30th ISAS Space Energy Symposium},
 month = {May},
 note = {第30回宇宙エネルギーシンポジウム(2011年2月25日, 宇宙航空研究開発機構宇宙科学研究所相模原キャンパス), 相模原市, 神奈川県, The thirtieth Space Energy Symposium (February 25, 2011. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS)), Sagamihara, Kanagawa Japan, Unmanned mobile robots are generally expected for detailed surface explorations of the Moon or Mars because such rovers can travel safely over long distances and make in-situ observations using scientific instruments. In this study, we have developed innovative test-bed rovers having a novel mobility system, lightweight manipulators, and advanced guidance and navigation functions. The test-bed rover is not designed for a specific mission, but to promote future technology advancements. This rover has been designed on the basis of comprehensive knowledge obtained from studies on previous prototypes.The electrical power systems (EPSs) of rovers require a stable power supply in order to realize long-range travel on the lunar and other planetary surfaces. In general, ordinary spacecraft such as satellites and probes are provided with certain electrical power generated by solar array paddles oriented toward the sun. In the case of rovers, however, there is no guarantee that steady power will be generated by the solar array because the sun incidence angle on solar panels varies with the movement direction and attitude of the rovers. In addition, the shadows of the boulders and craters on the surface of the Moon or Mars can obstruct sunlight from reaching the rover. Further, pulse peak powers greater than those generated by solar arrays are required for navigating the rovers over slopes and small rocks due to motor driven. Consequently, the battery is assumed to discharge frequently, even when operating under sunlight. Therefore, a power management scheme different from that applicable to ordinary orbiting spacecrafts is required for the EPSs of rovers.The EPS of our test-bed rover consists of a solar array panel (SAP), series switching regulator (SSR), battery (BAT), battery charge control unit (BCCU), power distribution units, and battery protection circuits. At present, the test-bed rover requires a power of around 100 W, including that for load consumption and battery charge. To generate possibly stable power under bright sunlight, maximum peak power tracking (MPPT) is adopted as the power control method for the SSR.We have performed several field tests in the desert in Izu-Ohshima island using the developed test-bed rover equipped with this EPS, a mobility system, manipulators, a telecommunication system, and advanced guidance and navigation functions. We have demonstrated a test run of the test-bed rover with autonomous power management and control. Through the field test, we evaluated the performance of the EPS such as the SAP generating power, its power balance, average and peak power consumptions and load profiles in various operation modes, and an effective current capacity of the equipped BAT. This paper reports on its function and performance, as obtained by experimental results., 形態: カラー図版あり, 形態: CD-ROM1枚, Physical characteristics: Original contains color illustrations, Note: One CD-ROM, 資料番号: AA0065107003},
 publisher = {宇宙航空研究開発機構宇宙科学研究所, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)},
 title = {移動探査ローバの電源系システムの開発及び性能評価},
 year = {2011}
}