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	Robustness of the tokamak error field correction tolerance scaling 期刊论文 OAI收割 PLASMA PHYSICS AND CONTROLLED FUSION, 2020, 卷号: 62 作者: Logan, N. C.; Park, J-K; Hu, Q.; Paz-Soldan, C.; Markovic, T. \| 收藏 \| 浏览/下载：30/0 \| 提交时间：2020/11/26 error fields ITER tokamak
	Optimal Design Method to Improve the Magnetic Field Distribution of Multiple Square Coil Systems 期刊论文 OAI收割 IEEE ACCESS, 2020, 卷号: 8 作者: Huang, Ya; Jiang, Li; Fu, Peng; Huang, Zhengyi; Xu, Xuesong \| 收藏 \| 浏览/下载：54/0 \| 提交时间：2020/11/30 Magnetic fields Optimization Mathematical model Taylor series Conductors Design methodology Power electronics Error analysis immunity test magnetic field uniformity multiple square coil systems
	The effect on tolerance distributing of an off-axis three mirror anastigmatic optical system with wavefront coding technology (EI CONFERENCE) 会议论文 OAI收割 Optical System Alignment and Tolerancing II, August 10, 2008 - August 11, 2008, San Diego, CA, United states 作者: Yan F.; Zhang X.-J.; Yan F. 收藏 \| 浏览/下载：35/0 \| 提交时间：2013/03/25 The wavefront coding technology is known as a system-level technology which can extend the depth of focus of optical system by innovative optical design and image restoration. This technology can control misfocus related aberrations including misfocus astigmatism and Petzval curvature temperature-related misfocus in digital imaging systems. It can also help optical system tolerate more residual error in optical manufacturing and alignment besides misfocus. The brief introduction of wavefront coding technology and the wavefront coded TMA system under research is presented respectively in part 1 and part 2. The "MTF similarity" is defined to describe the relationship among MTF at different position or different fields in the third part. It is also shown in this part that the MTF similarity of wavefront coded system is much higher than the normal system within a large range. In part 4 comparison between the origin system and the new system with wavefront coding technology is provided after multiple errors are introduced from which it can be observed that the system with wavefront coding technology can tolerate much bigger error than origin system. The error tolerance is re-distributed according to a new criterion based on MTF similarity. If the MTF similarity is less than a certain value it can be regarded that the system can tolerate the residual error. The new error tolerance is displayed and it is shown that the wavefront coding technology can also loosen the error distributing besides extended the depth of focus.
	Grating interferometry method for torsion measurement (EI CONFERENCE) 会议论文 OAI收割 ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China 作者: Liu W. 收藏 \| 浏览/下载：27/0 \| 提交时间：2013/03/25 Method of grating interferometry was presented for torsion angle measurement moire fringe generated by two gratings is used in a new field it breaks through moire fringe's routine application. Measurement principle is described torsion angle can be gotten by the tilt angle or the width of moire fringe. Different from moire fringe's characteristic information extracting methods in traditional measurement fields fringe-tilt method and fringe-width method were put forward to extract moire fringe's characteristic information. Fringe-tilt method is on the basis of moire fringe's tilt to acquire torsion angle uniform formula was built aiming at all positions of two gratings in the coordinates fringe-width method is on the basis of moire fringe's width to acquire torsion angle three key problems are given about fringe-width method. Thick middle and thin moire fringe were collected in experiments and processed by two methods fringe-width method's result shows that magnitude of boat torsion error is satisfied with that of theoretical precision analysis and the change rule of torsion error is also same to that of theoretical analysis the thicker fringe is the higher precision is when fringe width arrives to be 1695m the precision is 1.7" the thinner fringe is the lower precision is when fringe width arrives to be 734.7m the precision is 6.7". In addition to these the results of repeatability experiments sensibility experiments are given. In a word the measurement principle is right and the precision of fringe processing is also reliable.