QQ客服 官方微博 反馈留言

浏览/检索结果: 共4条，第1-4条 帮助 限定条件 内容类型：会议论文     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 and implementation of a single actuated bio-mimetic robotic fish (EI CONFERENCE) 会议论文 2012 9th IEEE International Conference on Mechatronics and Automation, ICMA 2012, August 5, 2012 - August 8, 2012, Chengdu, China Wan H.; Xu J.; Wang X.; Xu J. 收藏  |  浏览/下载：47/0  |  提交时间：2013/03/25 The mechanical structure of a single actuated bio-mimetic robotic fish was designed based on forced vibration responses of a non-prismatic cantilever which mimicked the fish body deformation. To realize the cruising  turning and burst-and-coast moving modes  the hardware system based on the micro controller unit STM32F103C8T6 and the control were developed. The state variable feedback method and PID method were used to design the control algorithms respectively. The simulation and experimental results showed that the whole system could imitate the swimming of the real fish. 2012 IEEE.   全身磁共振扩散加权成像正常表现及不同扫描方法比较 会议论文 作者:  赵秋枫;  张建军;  王嵩;  闫明勤;  张世界 收藏  |  浏览/下载：2/0  |  提交时间：2019/12/05 磁共振扩散加权成像  扫描  健康志愿者  Whole body  影像表现  抑制方法  比较研究  short  STIR   FVM-based method to prediction of velocity of landslide 会议论文 Inner Mongolia, China, July 15, 2011 - July 17, 2011 作者:  Zhang, Chunfeng;  Liu, Gao;  Yu, Fei;  Zhang, C. (liugaocf@lzu.edu.cn) 收藏  |  浏览/下载：3/0  |  提交时间：2017/01/18 Landslides  Dynamics  Finite volume method  Surveying  Three dimensional  Velocity  Complex modes  Digital elevation model  Dynamic process  Energy method  Finite volume  Micro unit  Sliding body  Sliding process  Sliding velocities  Slip surfaces  Surge  Three-dimensional dynamics  Whole process   Method for obtaining real temperature of space object by using the ratio of emissivity at different wavelengths (EI CONFERENCE) 会议论文 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 19, 2008 - November 21, 2008, Chengdu, China Guo-Qiang W.; Tao C.; Jian-Li W. 收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25 The infrared radiation character (temperature and efficiency radiation area) of a space object is an important characteristic  we can judge the state of the object working in orbit by measuring temperature and variety. Due to lower temperature of the object and far distance between the object and the earth  the infrared radiation signal is faintness  therefore temperature and the infrared radiation character is difficult to measure. There are several methods to measure the temperature of the object in theory and each one has its applicability respectively  such as applying Wien Law to compute temperature  based on Stefan-Bolzmann law to compute temperature and utilizing multi-spectrum detector to measure temperature As a whole these methods are based on the hypothesis that the object is a Black-body or the radiance emissivity is constant. In fact  homochromatic radiance of object is not a constant but a function that changes with wavelength. Since the problem that an object whose homochromatic radiance s not a constant which results in temperature can not be computed accurately  we bring forward a method to contrast the luminance of the object at different wavelengths and deduce the relationship among homochromatic radiance and wavelength and the temperature of Black-body  from which we can compute real temperature of object. 2009 SPIE.