中国科学院机构知识库网格系统: 检索

Geographical detector-based assessment of multi-level explanatory powers of determinants on China's medical-service resumption during the COVID-19 epidemic 期刊论文 OAI收割
ENVIRONMENT AND PLANNING B-URBAN ANALYTICS AND CITY SCIENCE, 2023, 卷号: 50, 期号: 7, 页码: 1739-1758
作者: Hu, Bisong; Fu, Sumeng; Luo, Jin; Lin, Hui; Yin, Qian

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收藏 | 浏览/下载：30/0 | 提交时间：2024/01/04

medical-service resumption geographical detector multi-level explanatory powers COVID-19

Removing Feasibility Conditions on Adaptive Neural Tracking Control of Nonlinear Time-Delay Systems With Time-Varying Powers, Input, and Full-State Constraints 期刊论文 OAI收割
IEEE TRANSACTIONS ON CYBERNETICS, 2022, 卷号: 52, 期号: 4, 页码: 2553-2564
作者:

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收藏 | 浏览/下载：41/0 | 提交时间：2022/06/10

Nonlinear systems Time-varying systems Control design Adaptive systems Delay effects Artificial neural networks Automation Feasibility conditions input and full-state constraints neural networks (NNs) nonlinear systems time-varying powers

Enhanced proportional power sharing strategy based on adaptive virtual impedance in low-voltage networked microgrid 期刊论文 OAI收割
IET GENERATION TRANSMISSION & DISTRIBUTION, 2018, 卷号: 12, 期号: 11, 页码: 2566-2576
作者: Zhang, Jiyuan; Shu, Jie; Ning, Jia; Huang, Lei; Wang, Hao

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收藏 | 浏览/下载：30/0 | 提交时间：2020/10/29

distributed power generation power generation control reactive power control enhanced proportional power sharing strategy adaptive virtual impedance loop low-voltage networked microgrid electrical distance variation electric network complexity feeder impedances variations distributed generation units load points mismatched impedance improved R-L type droop control real powers reactive powers integral controllers virtual inductive components virtual resistive components MATLAB Simulink

Coherent pion production in proton-deuteron collisions 期刊论文 OAI收割
PHYSICS LETTERS B, 2016, 卷号: 762, 页码: 102-106
作者: Dymova, S.

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收藏 | 浏览/下载：52/0 | 提交时间：2018/05/31

Pion production Analysing powers Spin correlations

Multivariate splines and polytopes 期刊论文 OAI收割
JOURNAL OF APPROXIMATION THEORY, 2011, 卷号: 163, 期号: 3, 页码: 377-387
作者: Xu, Zhiqiang

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收藏 | 浏览/下载：24/0 | 提交时间：2018/07/30

Box splines Multivariate truncated powers Polytopes Unit cubes

Design of motion adjusting system for space camera based on ultrasonic motor (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China
作者: Sun Z.

收藏 | 浏览/下载：96/0 | 提交时间：2013/03/25

Drift angle is a transverse intersection angle of vector of image motion of the space camera. Adjusting the angle could reduce the influence on image quality. Ultrasonic motor (USM) is a new type of actuator using ultrasonic wave stimulated by piezoelectric ceramics. They have many advantages in comparison with conventional electromagnetic motors. In this paper some improvement was designed for control system of drift adjusting mechanism. Based on ultrasonic motor T-60 was designed the drift adjusting system which is composed of the drift adjusting mechanical frame the ultrasonic motor the driver of Ultrasonic Motor the photoelectric encoder and the drift adjusting controller. The TMS320F28335 DSP was adopted as the calculation and control processor photoelectric encoder was used as sensor of position closed loop system and the voltage driving circuit designed as generator of ultrasonic wave. It was built the mathematic model of drive circuit of the ultrasonic motor T-60 using matlab modules. In order to verify the validity of the drift adjusting system was introduced the source of the disturbance and made simulation analysis. It designed the control systems of motor drive for drift adjusting system with the improved PID control. The drift angle adjusting system has such advantages as the small space simple configuration high position control precision fine repeatability self locking property and low powers. It showed that the system could accomplish the mission of drift angle adjusting excellent. 2011 SPIE.

Multivariate F-splines and Fractional Box Splines 期刊论文 OAI收割
JOURNAL OF FOURIER ANALYSIS AND APPLICATIONS, 2009, 卷号: 15, 期号: 5, 页码: 723-738
作者: Xu, Zhiqiang

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收藏 | 浏览/下载：14/0 | 提交时间：2018/07/30

Box splines Multivariate truncated powers Fractional B-splines

A method for measuring thermal focal length of LD-side-pumped laser crystal 期刊论文 OAI收割
ACTA PHYSICA SINICA, 2008, 卷号: 57, 期号: 11, 页码: 6987
Geng, AC; Zhao, C; Bo, Y; Lu, YF; Xu, ZY

收藏 | 浏览/下载：40/0 | 提交时间：2013/09/17

SUM-FREQUENCY GENERATION SOLID-STATE LASERS ND-YAG LASER LENS DETERMINATION YELLOW LASER POWERS ROD

边缘泵浦被动调Q的Nd：YAG薄片激光器 期刊论文 OAI收割
Chin. Opt. Lett., 2008, 卷号: 6, 期号: 5, 页码: 364, 365
程小劲; 王志敏; 陈凡; 徐剑秋

收藏 | 浏览/下载：1781/236 | 提交时间：2009/09/18

固体激光器 Diode laser arrays 被动调Q High powers 热效应 Nd: YAG 光束质量 Slab lasers

Radially polarized and pulsed output from passively Q-switched Nd:YAG ceramic microchip laser 期刊论文 OAI收割
opt. lett., 2008, 卷号: 33, 期号: 22, 页码: 2686, 2688
Li Jian-Lang; Ueda Ken-Ichi; Musha Mitsuru; Zhong Lan-Xiang; Shirakawa Akira

收藏 | 浏览/下载：1917/253 | 提交时间：2009/09/18

Absorbed pump powers Laser powers Nd:YAG ceramics Numerous applications Output couplers Peak powers Polarization degrees Polarized laser pulses Pulse durations Pulsed outputs Repetition rates Saturable absorbers Slope efficiencies Subwavelength gratings Yag crystals