Modeling and Analysis of Novel Integrated Radial Hybrid Magnetic Bearing for Magnetic Bearing Reacti

来源 :Chinese Journal of Mechanical Engineering | 被引量 : 31次 | 上传用户:q_yong
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Conventional ball bearing reaction wheel used to control the attitude of spacecraft cant absorb the centrifugal force caused by imbalance of the wheel rotor,and there will be a torque spike at zero speed,which seriously influences the accuracy and sta
其他文献
植物在生长过程中会面临各种各样的胁迫,为了自我保护,植物进化出了多种抵御胁迫的策略。植物谷胱甘肽-S-转移酶(glutathione-S-transferases,GSTs,EC2.5.1.18)可以催化亲核性的谷胱甘肽(glutathione,GSH)与各种亲电子外源化学物的结合反应,降低细胞体内活性氧(reactive oxygen species,ROS)水平,从而减轻非生物胁迫对植物的损伤
期刊
比较了光/暗对蚕豆上、下表皮气孔运动的调节作用.结果显示:光/暗调控的蚕豆上、下表皮气孔运动均涉及保卫细胞H2O2、NO、Ca2+、促分裂原活化蛋白激酶激酶(MAPKK)、钙依赖蛋白激酶(CDPK)和酪氨酸蛋白磷酸酶(PTP)的变化,下表皮气孔对光/暗更敏感,而且暗中下表皮保卫细胞H2O2、NO、Ca2+、CDPK和PTP水平高于上表皮保卫细胞.另外,胞内Ca2+库Ca2+释放对暗诱导下表皮保卫细
期刊
Based on the digital seismic waveform data observed from regional and reservoir seismic networks,the seismicity and source parameters in the Zipingpu reservoir area from January 1,2000 to May 11,2008
期刊
According to the construction project of the crustal deformation mobile monitoring network in the cascade hydropower stations built in the lower reaches of Jinsha River,this paper analyzes the design
期刊
随着人类活动对全球环境的影响,环境重金属污染负荷日益增加,重金属元素向南极地区的迁移和富集已成为该地区面临的严重问题之一。地衣是研究重金属元素大气沉降特征的良好材料,但对南极地衣的重金属元素大气沉降富集能力的比较研究甚少。作者以网袋法实验比较采自西南极乔治王岛菲尔德斯半岛的5种南极优势地衣,即:王橙衣Caloplaca regalis、夹心果衣Himantormia lugubris、孔树花Ram
期刊
根据1993~2003年期间在分布于喜马拉雅东部和西藏南部32个地震台站记录的约1300次精定位的地震,确定了分形(相关)维数和b值。0.9的空间相关度表明,该地区地震更接近于成丛分布,而b值为1.02则表明该地区的地震活动高度活跃。此外,本文详尽地分析了频次—震级分布和分数维与深度的关系。分析结果表明,在喜马拉雅—青藏高原碰撞区,不同深度层次的构造变化,反映了这个地区存在高度的不均匀性和高度的变
期刊
In order to evaluate the nonlinear performance and the possible damage to rubber-bearings (RBs) during their normal operation or under strong earthquakes, a simplified Bouc-Wen model is used to descri
期刊
Use of stainless reinforcing steel (SRS) in reinforced concrete (RC) structures is a promising solution to corrosion issues.However, for SRS to be used in seismic applications, several mechanical prop
期刊
Chinese meteorological satellite,Fengyun(FY) Satellite,has a polar-orbiting series and a geostationary series.Up to now,5 polar-orbiting(FY-1A/B/C/D and FY-3A) and 5 geostationary(FY-2A/B/C/D/E) satel
期刊
Purification of photosystem II(PSII) core complexes is a time-consuming and low-efficiency process.In order to isolate pure and active PSII core complexes in large amounts,we have developed a fast met
期刊