机构

• 数学与系统科学研究院 [3]
• 长春光学精密机械与物... [1]

采集方式

• OAI收割 [4]

内容类型

• 期刊论文 [3]
• 会议论文 [1]

发表日期

• 2012 [2]
• 2004 [1]
• 2003 [1]

学科主题

筛选

浏览/检索结果: 共4条，第1-4条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 A new algorithm for solving the best-fit sphere of optical aspherical surface (EI CONFERENCE) 会议论文  OAI收割 2nd International Conference on Advances in Materials and Manufacturing, ICAMMP 2011, December 16, 2011 - December 18, 2011, Guilin, China 作者:  Lin J.;  Lu M. 收藏  |  浏览/下载：40/0  |  提交时间：2013/03/25 To solve the best-fit sphere (BFS) accurately is one of the technological keys for the generating and testing of optical aspherical surfaces. This paper presents a new algorithm for solving the BFS of aspherical surfaces to suppress some deficiencies in the existing BFS algorithms. In the proposed approach  it is not only suitable for the conic surface  a BFS is constructed  but also for higher order aspheres. The obtained asphericity and material removal function is more suitable for the machining and test. (2012) Trans Tech Publications  which passes through both sides of endpoints in the section o -?xy of the aspherical surfaces  Switzerland.  the center of the BFS is shifted along the x-axis  and its radius of curvature is automatically computed. The variable step size method is proposed to speed up the convergence of the iteration. Through numerically solving the BFS of conic and cubic surface  the advantages of the proposed approach are verified. The results show that the proposed approach is of rapid convergence  and high accuracy   BANDED TOEPLITZ PRECONDITIONERS FOR TOEPLITZ MATRICES FROM SINC METHODS 期刊论文  OAI收割 JOURNAL OF COMPUTATIONAL MATHEMATICS, 2012, 卷号: 30, 期号: 5, 页码: 533-543 作者:     |  收藏  |  浏览/下载：19/0  |  提交时间：2021/01/14 FAST ITERATIVE METHODS  DIFFERENTIAL-EQUATIONS  SYSTEMS  Toeplitz matrix  Banded Toeplitz preconditioner  Generating function  Sinc method  Eigenvalue bounds   Symplectic schemes for Birkhoffian system 期刊论文  OAI收割 COMMUNICATIONS IN THEORETICAL PHYSICS, 2004, 卷号: 41, 期号: 3, 页码: 329-334 作者:  Su, HL;  Qin, MZ   |  收藏  |  浏览/下载：15/0  |  提交时间：2018/07/30 Birkhoffran system  symplectic structure  generating function method  symplectic scheme   High order symplectic schemes for the sine-Gordon equation 期刊论文  OAI收割 JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2003, 卷号: 72, 期号: 11, 页码: 2731-2736 作者:  Wang, YS;  Wang, B;  Ji, ZZ;  Qin, MZ   |  收藏  |  浏览/下载：13/0  |  提交时间：2018/07/30 sine-Gordon equation  high order symplectic scheme  generating function method  variation derivative