排序方式: 共有63条查询结果,搜索用时 125 毫秒
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朱学斌 《烟台师范学院学报(自然科学版)》2006,22(4):300-302
介绍了电子指南针的工作原理,采用高速A/D转换器MAX155,完成了对KMZ52二维磁阻传感器输出信号的同时采样,提高了系统的精度.同时,采用跳转技术对偏差及温度漂移进行了补偿,减少了温度等因素对本系统造成的影响. 相似文献
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为了解决磁罗经不能自动校正自差、精度低的问题,研制了一种利用模糊控制技术实现磁罗经自差自动校正的系统。仿真分析表明,该系统不仅降低了校正所需时间,而且提高了校正精度。 相似文献
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The aim of this article is to shed light on an understudied aspect of Giordano Bruno's intellectual biography, namely, his career as a mathematical practitioner. Early interpreters, especially, have criticized Bruno's mathematics for being “outdated” or too “concrete”. However, thanks to developments in the study of early modern mathematics and the rediscovery of Bruno's first mathematical writings (four dialogues on Fabrizio's Mordente proportional compass), we are in a position to better understand Bruno's mathematics. In particular, this article aims to reopen the question of whether Bruno anticipated the concept of infinitesimal quantity. It does so by providing an analysis of the dialogues on Mordente's compass and of the historical circumstances under which those dialogues were written. 相似文献
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司南是最早的磁性指向器.北宋时期,磁化技术的突破,导致磁性指向器的形制有了新的演变,其中,用针指向是磁性指向器形制最重要的改进.指南针的出现,极大提高了磁性指向器的指向精度,加快了磁偏现象的发现.之后,指南针的形制仍不断被改进,指南鱼发展成水罗盘,用以指向的木刻鱼被穿上小木条的磁针取代,"指南鱼"的形制消失;指南龟发展成枢轴支承式,成了旱罗盘.本文对磁性指向器的发明和演进过程稍作梳理,希望对帮助广大读者了解这一问题能够有所裨益. 相似文献
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S. Benvenuti A. Gagliardo T. Guilford P. Luschi 《Cellular and molecular life sciences : CMLS》1996,52(6):608-612
In order to investigate the pigeon's compass mechanism, a series of overcast tests with clock-shifted birds were run at two familiar release sites. While controls were able to assume a correct homeward direction, the experimental birds' initial orientation cannot be explained either on the basis of a time-compensated sun compass or of a time-independent magnetic compass. Speculative explanations of our paradoxical results are attempted. 相似文献
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本文分析二种指向仪器──磁罗经和陀螺罗经存在的问题和不足。根据磁罗经的指北原理、陀螺罗经高性能的特点和磁感器敏感磁束的特性,提出一种新型指向仪器的设想,并对新型罗经的各种问题进行初步的探讨和研究。 相似文献
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通过实际测试,将北斗RTK和GPSRTK进行对比,了解北斗RTK的实际定位精度情况。测试结果表明,GPSRTK和北斗RTK定位的平面点位中误差分别为37.3mm和41.7mm,证明北斗系统和GPS的平面定位精度基本在同一量级上,能够满足RTK测量的需要。 相似文献
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袁孜 《四川大学学报(自然科学版)》2008,45(6):1362-1366
本文介绍了一种基于路径规划的避障轮式移动机器人的设计.该设计下,能在未知的行进环境中探测障碍物,并且以智能路径规划的方法、恰当地搜索策略进行路径搜索以选择正确路线,绕过障碍物实现避障,最终到达预定的目标. 相似文献