QQ客服 官方微博 反馈留言

浏览/检索结果: 共7条，第1-7条 帮助 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 Inexact rotated block triangular preconditioners for a class of block two-by-two matrices 期刊论文 JOURNAL OF ENGINEERING MATHEMATICS, 2015, 卷号: 93, 期号: 1, 页码: 87-98 作者:  Lang, Chao;  Ren, Zhi-Ru 收藏  |  浏览/下载：13/0  |  提交时间：2018/07/30 Block two-by-two matrix  Block triangular preconditioning  Inexact preconditioning  Incomplete factorization   Splitting-based block preconditioning methods for block two-by-two matrices of real square blocks 期刊论文 APPLIED MATHEMATICS AND COMPUTATION, 2014, 卷号: 243, 页码: 825-837 作者:  Yan, HY;  Huang, YM 收藏  |  浏览/下载：4/0  |  提交时间：2015/12/16 Block two-by-two matrix  Splitting iteration method  Orthogonal matrix  Spectral property  Splitting-based preconditioner   Additive block diagonal preconditioning for block two-by-two linear systems of skew-Hamiltonian coefficient matrices 期刊论文 NUMERICAL ALGORITHMS, 2013, 卷号: 62, 期号: 4, 页码: 655-675 作者:  Bai ZZ;  Chen F(陈芳);  Wang ZQ 收藏  |  浏览/下载：20/0  |  提交时间：2013/05/03 Block two-by-two matrices  PMHSS iteration  Block diagonal matrix  Preconditioning  Spectral properties  PDE-constrained optimization   Rotated block triangular preconditioning based on PMHSS 期刊论文 SCIENCE CHINA-MATHEMATICS, 2013, 卷号: 56, 期号: 12, 页码: 2523-2538 作者:  Bai ZhongZhi 收藏  |  浏览/下载：1/0  |  提交时间：2021/01/14 HERMITIAN SPLITTING METHODS  DEFINITE LINEAR-SYSTEMS  NONSYMMETRIC MATRICES  block two-by-two matrix  PMHSS preconditioner  block triangular preconditioning  product-type preconditioning  eigen-properties   Optical axis stabilization of semi-strapdown seeker based on disturbance observer (EI CONFERENCE) 会议论文 2011 International Conference on Information and Automation, ICIA 2011, June 6, 2011 - June 8, 2011, Shenzhen, China Sun G.; Zhu M.; Yin S.; Jia H. 收藏  |  浏览/下载：18/0  |  提交时间：2013/03/25 Based on the kinematics of semi-strapdown seeker  the framework coordinate of the seeker is established. The optical axis stability equation of semi-strapdown seeker is deduced by using attitude transformation matrix. Then  the stability control principle block diagram of semi-strapdown seeker is shown based on the stability equation. The main factors that influence the stabilization precision are pointed out  such as friction disturbance  velocity-measuring noise and missile disturbance. In order to improve the stabilization precision  disturbance observer was proposed in semi-strapdown seeker stability control. The low frequency external disturbance and high frequency velocity measurement noise are effectively restrained by the disturbance observer as shown in hardware-in-loop simulation  and optical axis stabilization precision is improved nearly 20 times and 5 times due to two different frequencies with same amplitude. 2011 IEEE.   Restrictive preconditioners for conjugate gradient methods for symmetric positive definite linear systems 期刊论文 JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS, 2006, 卷号: 187, 期号: 2, 页码: 202-226 作者:  Bai, ZZ;  Wang, ZQ 收藏  |  浏览/下载：11/0  |  提交时间：2018/07/30 linear system  block two-by-two matrix  symmetric positive definite matrix  restrictive preconditioner  conjugate gradient method   Structured preconditioners for nonsingular matrices of block two-by-two structures 期刊论文 MATHEMATICS OF COMPUTATION, 2006, 卷号: 75, 期号: 254, 页码: 791-815 作者:  Bai, ZZ 收藏  |  浏览/下载：12/0  |  提交时间：2018/07/30 block two-by-two matrix  preconditioner  modified block relaxation iteration  eigenvalue distribution  positive definiteness