中国科学院机构知识库网格系统: 检索

Dynamic-based model for calculating the boulder impact force in debris flow 期刊论文 OAI收割
JOURNAL OF MOUNTAIN SCIENCE, 2024, 卷号: 21, 期号: 6, 页码: 1930-1940
作者: Yang, Chaoping; Zhang, Shaojie; Yin, Yueping; Yang, Hongjuan; Wei, Fangqiang

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收藏 | 浏览/下载：18/0 | 提交时间：2024/08/14

Debris flow Impact force Boulder collision Dynamic-based model Engineering design

Model-based plasma vertical stabilization and position control at EAST 期刊论文 OAI收割
FUSION ENGINEERING AND DESIGN, 2018, 卷号: 129, 期号: 无, 页码: 152-157
作者: De Tommasi, G.; Xiao, B. J.; Albanese, R.; Ambrosino, R.; Castaldo, A.

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收藏 | 浏览/下载：71/0 | 提交时间：2019/08/26

Model-based control design Plasma magnetic control in tokamak Plasma vertical stabilization

On the database-based strategy of candidate extractant generation for de-phenol process in coking wastewater treatment 会议论文 OAI收割
Collaborat Innovat Ctr Chem Sci & Engn, Tianjin, PEOPLES R CHINA, JUL 12-15, 2015
作者: Xu, Ran; Zhao, Yuehong; Han, Qingzhen; Liu, Xinyu; Cao, Hongbin

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收藏 | 浏览/下载：43/0 | 提交时间：2019/06/21

Existing commercial compounds database AIDED MOLECULAR DESIGN De-phenol extractant MODIFIED UNIFAC MODEL Database-based generation strategy SOLVENTS Environmental risk PREDICTION FRAMEWORK SELECTION

An Integrated Design Method for Cyber-Physical Production Systems 会议论文 OAI收割
Chongqing, China, October 12-14, 2018
作者: Wan GX(万广喜); Wang P(王鹏); Xue LL(薛玲玲); Zeng P(曾鹏)

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收藏 | 浏览/下载：25/0 | 提交时间：2019/02/09

Component-based Design IEC 61499 Industrial automation Model-based design Ontology Semantic technology

Environmentally Assisted Fatigue Evaluation Model of Alloy 690 Steam Generator Tube in High-Temperature Water 期刊论文 OAI收割
CORROSION, 2016, 卷号: 72, 期号: 5, 页码: 655-664
Tan, JB; Liu, XQ; Xu, XL; Han, EH; Wu, XQ; Wang, X

收藏 | 浏览/下载：41/0 | 提交时间：2016/12/28

corrosion fatigue environmental fatigue design model high-temperature high-pressure water nuclear-grade nickel-based alloy

Effect of Zn doping on the hydrogenolysis of glycerol over ZnNiAl catalyst 期刊论文 OAI收割
journal of molecular catalysis a-chemical, 2014, 卷号: 395, 页码: 1-6
Li, Xiaoru; Zhang, Chao; Cheng, Haiyang; He,Limin; Lin,Weiwei; Yu,Yancun; Zhao,Fengyu

收藏 | 浏览/下载：87/0 | 提交时间：2015/10/20

Nickel based catalyst is of interest in the industrial catalytic processes and it is always modified by doping a second element to improve its catalytic properties. Understanding the role of dopant is extremely helpful in tailoring the active centers. In this work Zn could induce a significant improvement of the catalytic performance of NiAl for the hydrogenolysis of glycerol. The Zn doped ZnNiAl catalysts exhibited high activity and the improved selectivity to 1 2-propanediol it was about 2 times higher than the original ones. The ZnNi alloy formed in ZnNiAl was responsible for the noticeable catalytic performance. They preferred to coordinate with the end hydroxyl group of glycerol promoted the cleavage of C-O bond in glycerol and resulted in the dominant formation of 1 2-propanediol. The findings described here will provide a useful knowledge for rational design of nickel-based catalysts as well as reveal a new reaction model for the hydrogenolysis of glycerol. (C) 2014 Elsevier B.V. All rights reserved.

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.

Accuracy synthesis of a 3-RPS parallel robot based on manufacturing costs (EI CONFERENCE) 会议论文 OAI收割
31st Chinese Control Conference, CCC 2012, July 25, 2012 - July 27, 2012, Hefei, China
Yao T.-K.; Xi Z.; Feng Z.; Zhang L.-M.; Yong W.

收藏 | 浏览/下载：30/0 | 提交时间：2013/03/25

Pose accuracy is an important issue for parallel robot being used as mirror supporting system of telescope. One challenging topic is the accuracy synthesis which deals with the optimal design of the manufacturing and assembling tolerances of each component under the given pose accuracy. First the error model of the 3-RPS parallel robot is built based on total derivation of the kinematic equations. And the error variable of each spherical or rotate joint can be expressed as a single boundary error parameter but not three independent position parameters. Then the accuracy synthesis model is formulated taking the manufacturing costs as the optimization objective and the accuracy requirements as the constraint condition. Finally the genetic algorithm is used to solve the optimization problem and a simulation example is given. The results show that the accuracy synthesis method based on manufacturing costs can satisfy the need of pose accuracy and is better for engineering application than the method based on error sensitivity. 2012 Chinese Assoc of Automati.

Surface shape optimization for the space membrane reflector (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011, August 12, 2011 - August 14, 2011, Harbin, China
作者: Zhang Y.; Zhang P.

收藏 | 浏览/下载：23/0 | 提交时间：2013/03/25

Space membrane reflector is very promised for optical quality application with the merits of ultra-lightweight and flexible. In order to improve the surface precision of membrane reflectors the formation and surface shape error of a membrane at uniform load are studied based on the henky-cambell equations of circular membrane. The ANSYS software is used to build an optimization model of membrane reflector surface shape in which the yield strength is the state variable the surface load on ten concentric annular regions of the mirror is the design variable and the minimum RMS between ideal surface and mirror surface is the target function. and the theoretical and experimental result show that RMS and PV of the optimized surfaces are reduced respectively than those before optimization. In a word this paper offers the theoretical and experimental basis of the polyimide membrane reflector. 2011 IEEE.

A fuzzy control method based on information integration for double inverted pendulum (EI CONFERENCE) 会议论文 OAI收割
2011 2nd International Conference on Digital Manufacturing and Automation, ICDMA 2011, August 5, 2011 - August 7, 2011, Zhangjiajie, Hunan, China
作者: Fan Y.

收藏 | 浏览/下载：59/0 | 提交时间：2013/03/25

This article proposes a new fuzzy controller based on information integration. The mathematical model of Linear double inverted pendulum has been studied and estabLished with dynamics analytical method and LQR theory is used to design the optimal Linear inverted pendulum controller then the integration technology is used to design the variable parameters self-tuning fuzzy controller. Thereby the fuzzy controller input variable dimension and the number of fuzzy control rules have been extremely reduced. Two controllers are designed for inverted pendulum system control and the comparison simulation experiments have been done. The results show that the controllers can both reaLize good control and the fuzzy controller has higher precision faster response better stabiLity and robustness. 2011 IEEE.