中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共9条，第1-9条

帮助

条数/页：排序方式：
	A New Active Disturbance Rejection Control to Output Feedback Stabilization for a One-Dimensional Anti-Stable Wave Equation With Disturbance 期刊论文 OAI收割 IEEE TRANSACTIONS ON AUTOMATIC CONTROL, 2017, 卷号: 62, 期号: 8, 页码: 3774-3787 作者: \| 收藏 \| 浏览/下载：22/0 \| 提交时间：2018/07/30 Active disturbance rejection control anti-stable wave disturbance estimator output feedback stabilization
	Intercomparison of Four Commercial Analyzers for Water Vapor Isotope Measurement SCI/SSCI论文 OAI收割 2012 Wen X. F.; Lee X. H.; Sun X. M.; Wang J. L.; Tang Y. K.; Li S. G.; Yu G. R. 收藏 \| 浏览/下载：25/0 \| 提交时间：2012/09/04 cavity-output spectroscopy ratio mass-spectrometry ring-down spectroscopy eddy covariance stable-isotopes delta-o-18 delta-h-2 absorption calibration samples
	Embedded system of time uniform based on DSP (EI CONFERENCE) 会议论文 OAI收割 2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China 作者: Li N.; Liu C.-X.; Liu C.-X.; Chen J.; Guo L.-H. 收藏 \| 浏览/下载：24/0 \| 提交时间：2013/03/25 We introduced a design method of DSP-based System of time uniform which combine the GPS and the Compass to calibrate the time. The system can use UTC (Coordinated Universal Time) of the GPS or the Compass for time base to generate absolute time and different frequency of synchronous signals. We used DSP (Digital Signal Processor) to calculate the satellite information which includes the UTC time. After getting the UCT time information put it into the CPLD (Complex Programmable Logic Device) for correction of time delay and serialization to output. Meanwhile we divided 1PPS (one-pulse-per-second) signal of the GPS and the Compass into 20Hz 50Hz and 800Hz synchronous signal. And we analyzed the precision of time and frequency. To conclude the uncertainty of system absolute time is less than 100ns the uncertainty of system synchronous signals is less than 20ns. This system is easy and flexible for use stable and reliable in performance. 2010 IEEE.
	Design and implementation of a high speed CMOS imaging system (EI CONFERENCE) 会议论文 OAI收割 2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China 作者: He X. 收藏 \| 浏览/下载：25/0 \| 提交时间：2013/03/25 In order to meet the needs of measurement of highspeed target the timing sequence of LUPA300 an array CMOS image sensor of CYPRESS is analyzed. The driving timing and control software is designed for the array CMOS sensor. High speed CMOS imaging system whose hardware platform is FPGA is emphasized. Real-time non-uniformity correction for CMOS sensor is implemented in the output stage. The experimental result shows that the system could control the CMOS sensor flexibly. The image is clear and stable. The maximum resolution of the image is 640H480V pixels and the system can operate up to 250 frames per second in full resolution. 2010 IEEE.
	Decentralized adaptive output-feedback stabilization for large-scale stochastic nonlinear systems 期刊论文 OAI收割 AUTOMATICA, 2007, 卷号: 43, 期号: 2, 页码: 238-251 作者: Liu, Shu-Jun; Zhang, Ji-Feng; Jiang, Zhong-Ping \| 收藏 \| 浏览/下载：24/0 \| 提交时间：2018/07/30 decentralized control stochastic nonlinear systems stochastic input-to-state stable inverse dynamics output feedback adaptive control
	1.41 W Nd: YAG laser at 556 nm end-pumped by laser diode arrays (EI CONFERENCE) 会议论文 OAI收割 ICO20: Lasers and Laser Technologies, August 21, 2005 - August 26, 2005, Changchun, China Jia F.-Q.; Zheng Q.; Xue Q.-H.; Bu Y.-K.; Qian L.-S. 收藏 \| 浏览/下载：16/0 \| 提交时间：2013/03/25 A Nd: YAG laser has longitudinally pumped by a fiber coupling 20 W laser diode array with emission wavelength at 808nm in a three folded cavity configuration. After a 150 m thickness etalon was inserted into the cavity the 1112nm fundamental laser operation was obtained and then intracavity-frequency-doubling with a LBO crystal produced 1.41W of stable output at 556nm.
	All-solid-stated laser controller design based on digital optical feedback (EI CONFERENCE) 会议论文 OAI收割 Lasers in Material Processing and Manufacturing II, November 10, 2004 - November 12, 2004, Beijing, China 作者: Liu L.; Wang J.-L.; Wang J.-L.; Liu L. 收藏 \| 浏览/下载：28/0 \| 提交时间：2013/03/25 The new design about a CW digital all-solid-stated LD pumped Nd:YVO 4 controller is introduced. The stable output power of this digital laser controller which adopts Digital Signal Processor(TMS320C31) is approximately 20mW. The whole system is composed of constant- current source protection circuit pulse-width modulation circuit Si-photo-detector and amplified circuit and Digital Signal Processor control system etc. In terms of error deviation Based on nonlinear control curves of LD power output by Si-photo-detector the region control can be obtained by means of the PID control algorithm in the software platform that is error amendment and high stability laser power output can be achieved. And the precision of temperature control can reduce from 0.2C to 0.04C. By adopted integral separated mode PID control algorithm the LD output power instability ( %) down to 2%. By way of adopting the new digital design the work to protect the laser diode including the continuous adjustable output power with high accuracy and stability is easily obtained. The internal-external modulation control of the laser power based on digital optical feedback can be accomplished with stable power output. At last the bringing reasons of noise are analyzed and the solving methods are put forward in this paper.
	Research on LD-Pumped dual wavelength Nd:YAG Laser with high beam quality for machining (EI CONFERENCE) 会议论文 OAI收割 ICO20: Lasers and Laser Technologies, August 21, 2005 - August 26, 2005, Changchun, China 作者: Zhang G.; Zhang G.; Zhang G.; Zhang J.; Zhang J. 收藏 \| 浏览/下载：34/0 \| 提交时间：2013/03/25 Considering laser medium thermal lens effect and thermal focal length changes with pumping power conventionally lasers are designed to operate in the middle of thermal stable zones where the fundamental mode size is insensitive to thermal perturbation while this method seems impossible when large fundamental mode size is required. Through self-select mode cavity lasers are designed to work at the border of stable zone instead where large fundamental mode size in gain media can be reached. With increase of pumping power and self-aperture mode-selective effect mode size would grow up automatically to a certain value suitable for monomode resonance. With double 180 W pump modules acoustic Q-switch and LBO external frequency-doubled over 28 W which M2 equals 4.5 quasi-CW output green laser and 52W 1.064 um IR output is obtained simultaneity. With the insertion or not of the harmonic separator by footswitch high beam quality green IR and green IR lasers are obtained conveniently.
	Wave energy study in China: Advancements and perspectives 期刊论文 OAI收割 china ocean engineering, 2003, 卷号: 17, 期号: 1, 页码: 101-109 作者: You, YG; Zheng, YH; Shen, YM; Wu, BJ; Liu, R 收藏 \| 浏览/下载：16/0 \| 提交时间：2016/10/27 wave energy stable output energy buffer advancements and perspectives oscillating buoy wave energy devices