中国科学院机构知识库网格系统: 检索

Rate-based model for predicting and evaluating H2S absorption in the haloalkaliphilic biological desulfurization process 期刊论文 OAI收割
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, 2022, 卷号: 110, 页码: 479-490
作者: Chen, Zheng; Yang, Gama; Mu, Tingzhen; Yang, Maohua; Samak, Nadia A.

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收藏 | 浏览/下载：30/0 | 提交时间：2023/02/24

Haloalkaliphilic biological desulfurization H2S absorption Process stability Rate-based model Simulation Optimization

Rate dependency mechanism of crystalline rocks induced by impacts: Insights from grain-scale fracturing and micro heterogeneity 期刊论文 OAI收割
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING, 2021, 卷号: 155, 页码: 19
作者: Li, X. F.; Li, H. B.; Zhang, G. K.

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收藏 | 浏览/下载：24/0 | 提交时间：2022/04/11

Strain rate dependency Impact Multiscale fracturing Grain-based model Rock heterogeneity

Nickel-Based Single-Crystal Superalloys (Ni, Co)-Al-(Ta, Ti)-(Cr, Mo, W) Designed by Cluster-Plus-Glue-Atom Model and Their 1000 h Long-Term Ageing Behavior at 900 degrees C 期刊论文 OAI收割
ACTA METALLURGICA SINICA, 2018, 卷号: 54, 期号: 4, 页码: 591-602
作者: Zhang Yu; Wang Qing; Dong Honggang; Dong Chuang; Zhang Hongyu

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收藏 | 浏览/下载：17/0 | 提交时间：2021/02/02

nickel-based single-crystal superalloy cluster-plus-glue-atom model long-term ageing lattice misfit gamma(') coarsening rate

Estimating primary production of picophytoplankton using the carbon-based ocean productivity model: a preliminary study 期刊论文 OAI收割
FRONTIERS IN MICROBIOLOGY, 2017, 卷号: 8, 页码: 1926
作者: Liang, Yantao; Zhang, Yongyu; Wang, Nannan; Luo, Tingwei

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收藏 | 浏览/下载：47/0 | 提交时间：2018/01/04

Carbon-based Production Model Abundance Growth Rate Primary Production Picophytoplankton

Life tables and elasticity analyses of Yangtze River fish species with implications for conservation and management 期刊论文 OAI收割
REVIEWS IN FISH BIOLOGY AND FISHERIES, 2017, 卷号: 27, 期号: 1, 页码: 255-266
作者: Wang, Teng

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收藏 | 浏览/下载：18/0 | 提交时间：2019/09/29

Age-based model Matrix model Life history Vital rate Generation

Life tables and elasticity analyses of Yangtze River fish species with implications for conservation and management 期刊论文 OAI收割
REVIEWS IN FISH BIOLOGY AND FISHERIES, 2017, 卷号: 27, 期号: 1, 页码: 255-266
作者: Wang, Teng; Gao, Xin; Jakovlic, Ivan; Liu, Huan-Zhang

收藏 | 浏览/下载：31/0 | 提交时间：2017/06/07

Age-based model Matrix model Life history Vital rate Generation

LABTM control system based on FPGA (EI CONFERENCE) 会议论文 OAI收割
2nd International Conference on Mechatronics and Applied Mechanics, ICMAM 2012, December 8, 2012 - December 9, 2012, Taiwan
作者: Wang Y.; Yu P.; Yu P.; Wang Y.; Wang Y.

收藏 | 浏览/下载：152/0 | 提交时间：2013/03/25

This paper presents the digital PI control method for design and simulation of a high precision limited angle brushless torque motor control system in Field Programmable Gate Array device (FPGA). The direct drive structures which are widely applied in many servo control fields. Matlab Xilinx System GeneratorR toolbox based on Fixed-Point Arithmetic is used to design the digital PI controller using DSP architecture plot the responses of the control system and generate the VHDL source code. The control system model consists of a digital PI a real LABTM and a real absolute Inductosyn encoder to rpm and position blocks. Through loading generated codes in process of the simulation that built by the digital discrete model it is verified that the rising time of current loop is only 1.2ms and rate loop is 8ms overshoot is rarely 4.2%. Finally the comprehensive positioning accuracy of system can reach up to 5 arc sec and the rate jitter achieves 5% with the 4 arc sec accuracy absolute Inductosyn. (2013) Trans Tech Publications Switzerland.

Analyse the angular velocity estimation errors of -- filter based on high sampling rate (EI CONFERENCE) 会议论文 OAI收割
2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China
作者: Zhang Y.

收藏 | 浏览/下载：27/0 | 提交时间：2013/03/25

In order to get angular velocity of stabilization servo mechanism from angular position sensors -- filter based on high sampling rate was established model and error characteristics were analyzed. With the hypothesis of constant acceleration -- filter and its angular velocity transfer function were deduced. Combing with optimum parameters the effects of and sample rate on the error characteristics were evaluated. According to the requirements of stabilization servo mechanism the frequency characteristics of angular velocity transfer function are analyzed and the filter parameters are designed. The experimental which filter tracked and smoothed sinusoidal signal the results show that when the cutoff frequency of angular velocity loop is 44.9rad/s sampling period and parameters are 0.08ms and 0.01279 respectively the phase leading of angular position is 70. -- filter tracked sinusoidal signals with maximum angular velocity(30/s) and maximum angular acceleration(30/s2) the error of angular velocity estimation was 0.053/s. In the engineering of electro-optical stabilization servo mechanism -- filter can reduce noise effectively and reached the requirement of platform angular velocity estimation. Also it is one of the effective methods to get angular velocity from angular position sensors. 2011 IEEE.

Application of improved UKF algorithm in initial alignment of SINS (EI CONFERENCE) 会议论文 OAI收割
2011 2nd International Conference on Artificial Intelligence, Management Science and Electronic Commerce, AIMSEC 2011, August 8, 2011 - August 10, 2011, Zhengzhou, China
Su W. X.

收藏 | 浏览/下载：19/0 | 提交时间：2013/03/25

In order to improve the initial alignment accuracy and convergence rate of the SINS system proposed the improved UKF algorithm (AUKF) based on the Unscented Kalman Filter (UKF). Noise statistical characteristics are mostly unknown in real systems when it was effected by the initial value errors and dynamic model errors AUKF algorithm can real-time adjust the covariance of the state vector and observation vector and balance the right ratio of the state information and observation information in the filter results thereby improving the system performance. The experimental results show: The Improved UKF Algorithm enhances the convergence speed and alignment accuracy effectively. 2011 IEEE.

Earth elevation map production and high resolution sensing camera imaging analysis (EI CONFERENCE) 会议论文 OAI收割
Optoelectronic Imaging and Multimedia Technology, October 18, 2010 - October 20, 2010, Beijing, China
作者: Dai L.

收藏 | 浏览/下载：132/0 | 提交时间：2013/03/25

The Earth's digital elevation which impacts space camera imaging has prepared and imaging has analysed. Based on matching error that TDI CCD integral series request of the speed of image motion statistical experimental methods-Monte Carlo method is used to calculate the distribution histogram of Earth's elevation in image motion compensated model which includes satellite attitude changes orbital angular rate changes latitude longitude and the orbital inclination changes. And then elevation information of the earth's surface from SRTM is read. Earth elevation map which produced for aerospace electronic cameras is compressed and spliced. It can get elevation data from flash according to the shooting point of latitude and longitude. If elevation data between two data the ways of searching data uses linear interpolation. Linear interpolation can better meet the rugged mountains and hills changing requests. At last the deviant framework and camera controller are used to test the character of deviant angle errors TDI CCD camera simulation system with the material point corresponding to imaging point model is used to analyze the imaging's MTF and mutual correlation similarity measure simulation system use adding cumulation which TDI CCD imaging exceeded the corresponding pixel horizontal and vertical offset to simulate camera imaging when stability of satellite attitude changes. This process is practicality. It can effectively control the camera memory space and meet a very good precision TDI CCD camera in the request matches the speed of image motion and imaging. 2010 SPIE.