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浏览/检索结果: 共6条，第1-6条 帮助 限定条件 发表日期：2011     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Design of motion adjusting system for space camera based on ultrasonic motor (EI CONFERENCE) 会议论文 International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China Xu K.; Jin G.; Gu S.; Yan Y.; Sun Z. 收藏  |  浏览/下载：71/0  |  提交时间：2013/03/25 Drift angle is a transverse intersection angle of vector of image motion of the space camera. Adjusting the angle could reduce the influence on image quality. Ultrasonic motor (USM) is a new type of actuator using ultrasonic wave stimulated by piezoelectric ceramics. They have many advantages in comparison with conventional electromagnetic motors. In this paper  some improvement was designed for control system of drift adjusting mechanism. Based on ultrasonic motor T-60 was designed the drift adjusting system  which is composed of the drift adjusting mechanical frame  the ultrasonic motor  the driver of Ultrasonic Motor  the photoelectric encoder and the drift adjusting controller. The TMS320F28335 DSP was adopted as the calculation and control processor  photoelectric encoder was used as sensor of position closed loop system and the voltage driving circuit designed as generator of ultrasonic wave. It was built the mathematic model of drive circuit of the ultrasonic motor T-60 using matlab modules. In order to verify the validity of the drift adjusting system  was introduced the source of the disturbance  and made simulation analysis. It designed the control systems of motor drive for drift adjusting system with the improved PID control. The drift angle adjusting system has such advantages as the small space  simple configuration  high position control precision  fine repeatability  self locking property and low powers. It showed that the system could accomplish the mission of drift angle adjusting excellent. 2011 SPIE.   SCAN SCHEME AND IMAGING ALGORITHM OF SOLAR POLAR ORBITER TELESCOPE (SPORT) 会议论文 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Vancouver, CANADA, JUL 24-29, 2011 作者:  Zhang, C.;  Wu, J.;  Liu, H.;  Yan, J. Y.;  Sun, W. Y. 收藏  |  浏览/下载：17/0  |  提交时间：2014/12/15 SPORT  synthetic aperture radiometer  clock scan   STATUS AND RECENT PROGRESSES OF DEVELOPMENT OF THE SCATTEROMETER OF CFOSAT 会议论文 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Vancouver, CANADA, JUL 24-29, 2011 作者:  Dong Xiaolong;  Zhu Di;  Lin Wenming;  Liu Heguang;  Jiang Jingshan 收藏  |  浏览/下载：13/0  |  提交时间：2014/12/15 rotating fan-beam scatterometer  ocean vector wind  Chinese-French Oceanography Satellite   Space exploration mission concurrent design and simulation research 会议论文 7th International Conference on Networked Computing and Advanced Information Management, NCM 2011, Gyeongju, Korea, Republic of, June 21, 2011 - June 23, 2011 作者:  Zhongshi, P.;  Yuzhu, Z.;  Li, D. 收藏  |  浏览/下载：9/0  |  提交时间：2014/12/15 基于多目标遗传算法的太阳高纬探测器轨道设计 期刊论文 空间科学学报, 2011, 卷号: 31, 期号: 5, 页码: 653-658 作者:  李小玉;  郑建华;  吴霞;  高东 收藏  |  浏览/下载：24/0  |  提交时间：2014/12/15 太阳高纬探测  小推力  借力飞行  多目标遗传算法   Progress of NUV and FUV MCP-based photon-counting imaging detectors 会议论文 international symposium on photoelectronic detection and imaging 2011: space exploration technologies and applications, beijing, china, may 24, 2011 - may 26, 2013 LiuYong-An; ZhaoBao-Sheng; WeiYong-Lin; SaiXiao-Feng; YanQiu-Rong; ShengLi-Zhi 收藏  |  浏览/下载：11/0  |  提交时间：2012/07/09 Detectors  Photon-counting imaging  WSO-UV  Ultraviolet  MCP