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SSRN 2025年

作者： Wang, Wuming Tang, Yuyang Ran, Jiaqi Peng, Cheng Chu, Wenhai State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science and Engineering Tongji University Shanghai200092 China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092 China International Joint Research Center for Sustainable Urban Water System Tongji University Shanghai200092 China Key Laboratory of Interfacial Physics and Technology Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai201800 China Tongji University China

Photocatalytic production of hydrogen peroxide (H2O2) represents a clean and sustainable method to produce H2O2 in recent years. Although this vision is very appealing, the development of high - performance catalysts remain a critical challenge in this field. Resorcinol-formaldehyde resin, a newly identified semiconductor material, has demonstrated significant potential for H2O2 production, owing to its distinctive structural characteristics and catalytic activity. Within this resin, phenolic and quinone units serve as electron donors and acceptors, respectively, forming conjugated donor - acceptor (D - A) pairs. This conjugated network facilitates charge carrier separation and migration under light irradiation, ultimately leading to the generation of H2O2 through interaction with molecular oxygen. Nevertheless, the effect of the relative content of electron donors and acceptors on photocatalytic activity has yet to be fully elucidated. To address this knowledge gap and enhance the performance of resins, this study systematically investigated the relationship between the donor - acceptor ratio and photocatalytic H2O2 production. Our findings demonstrated a robust linear correlation (R2 = 0.99) between the D - A ratio and the photocatalytic H2O2 yield. Within a specific range, a lower D - A ratio resulted in enhanced light absorption, improved charge carrier separation efficiency, and subsequently, higher photocatalytic activity for H2O2 production. The resorcinol - formaldehyde resin with optimized D - A ratio achieved an energy conversion efficiency of 1.3 % over 5 hours, outperforming all catalysts reported to date. This work provided a deeper understanding of the intrinsic structure - activity relationship within D - A type photocatalysts, offering a novel perspective for the development of high - performance catalysts. © 2025, The Authors. All rights reserved.

关键词： Light absorption

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Implementation and design of open control system for industrial robot based on double-CPU

Implementation and design of open control system for industr...

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International Conference on Computing control and Industrial engineering (CCIE)

作者： Tian, Maosheng Tang, Xiaoqi Zhang, Yong State Engineering Research Center of Numerical Control System Huazhong University of Science and Technology Wuhan China Wuhan Huazhong Numerical Control Co. Ltd Wuhan China

ISBN: (纸本)9781424495979

In order to enhance openness and flexibility of industrial robot control system, an open control system based on double-CPU was designed. An embedded industrial computer based on 86 CPU with Windows XP worked as the upper-system, which implemented HMI and management of the open control system. A FPGA(Field Programmable Gate Array) and another same embedded industrial computer with RT-Linux worked as the lower-system, which implemented realtime motion control of the open control system. Ethernet based on a user-defined Ethernet type was used for exchanging data between the two CPU. Experimental results of the open control system being used for controlling a 5 DOF(Degrees of Freedom) flexible-joint manipulator demonstrate that performance of the system can satisfy requirements of different industrial robot application. © 2011 IEEE.

关键词： Industrial robots

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A modular numerical control system based on embedded technology

A modular numerical control system based on embedded technol...

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2009 International Conference on Computational Intelligence and Software engineering, CiSE 2009

作者： Li, Zhengyi Tang, Xiaoqi Zhou, Xiangdong State Engineering Research Center of Numerical Control System School of Mechanical Science and Engineering Huazhong University of Science and Technology Wuhan China

ISBN: (纸本)9781424445073

This paper proposes a novel architecture of the numerical control (NC) system based on multiprocessor and real-time Ethernet. To comply with the trend of modular, open framework NC system, the hardware architecture is composed of ARM, DSP and FPGA modules, of which the ARM module is responsible for HMI (Human-Machine Interface), the DSP module is in charge of core calculation, and the FPGA module plays the role of logical operation and constructs a real-time Ethernet for integrating servo drive modules, machine input/output units into the system. The proposed NC system has the advantages of smart reconfiguration, high performance but low cost. Finally, successful utilization of this system for a hoop bending machine control is briefly described. ©2009 IEEE.

关键词： Field programmable gate arrays (FPGA)

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Collision-Free Algorithm for Industrial Robots Based GJK and OBB Theories

Collision-Free Algorithm for Industrial Robots Based GJK and...

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International Conference on SmartRail, Traffic, and Transportation engineering, ICSTTE 2023

作者： Aalhasan, Ali Joodi Bao, Song National Engineering Research Center of Numerical Control System Huazhong University of Science and Technology Wuhan China

ISBN: (纸本)9789819736812

This paper proposes a better way for industrial robots to avoid collisions while manipulating objects. The method uses the Oriented Bounding Boxes (OBB) theory. OBB is effective because it can work with objects turned in any direction, which makes it very exact. To detect if two OBBs are colliding, the algorithm adopted double-check collision detection to achieve a collision-free workspace. First, Threshold distance collision detection by calculating the nearest line between an object’s corners. Then by the Gilbert-Johnson-Keerthi (GJK) algorithm. The algorithm uses Z-Y-Z Euler's angles to handle orientation between robot grippers and objects during paths. This updated algorithm will make industrial robots safer and more efficient when handling objects. We have adopted Coppellia Simulation software to verify the accuracy of the algorithm with different scenarios. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Industrial robots

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Third-order trajectory planning for high accuracy point-topoint motion

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Frontiers of Electrical and Electronic engineering in China 2009年第1期4卷 83-87页

作者： Haihua MU Yunfei ZHOU Sijie YAN Aiguo HAN National Numerical Control System Engineering and Technology Research Center Huazhong University of Science and TechnologyWuhan 430074China

This article studies a third-order trajectory planning method for point-to-point *** available instances for third-order trajectory planning are first *** distinguish those,three criteria are presented relying on trajectory *** that,a fast preprocessing approach considering the trajectory as a whole is given based on the criteria constructed and system ***,the time-optimality of the trajectory is *** relevant formulas are derived with the combination of geometrical symmetry of trajectory and area *** a result,an accurate algorithm and its implementation procedure are *** experimental results show the effectiveness and precision of the proposed *** presented algorithm has been applied in semiconductor manufacturing equipment successfully.

关键词： trajectory planning point-to-point motion limitation criteria

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Adaptive real-time network design of embedded system

Adaptive real-time network design of embedded system

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2nd IEEE/ASME International Conference on Mechatronic and Embedded systems and Applications, MESA 2006

作者： Tao, Huang Yunfei, Zhou Ming, Zhong National Numerical Control System Engineering Research Center Huazhong University of Science and Technology 430074 China National Numerical Control System Engineering Research Center Huazhong University of Science and Technology 430074 China School of Information Engineering Wuhan University of Technology 430070 China

ISBN: (纸本)0780397215

Aimed for the real-time requirement of Ethernet in embedded system, an Agent-based system was presented. There were one managing node and a lot of control nodes in this new system. In order to reduce the real-time decline resulting from channel conflict, every control node was assigned a default priority and the control nodes with the same priority formed a group. Every control node communicated with each other and managing node based on the priority groups they belonged to. Master Agent in managing node received different status data from every Sub Agent in the control nodes in different cycles. A dynamic adjustment model was set up in Master Agent. The status data gathered from control nodes were counted as inputs of the model;thus, through the model, the priorities of these control nodes could have dynamic adjustments. Network communication distributed channel resources by way of dynamic priorities, ensuring not only that there was less communication conflict among nodes at a certain moment, but also that adaptive adjustments of priorities could be achieved to improve transmission efficiency. The analysis and the simulation results demonstrate the method is correct and efficient.

关键词： Embedded systems

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Tracking the carbon footprint of global generative artificial intelligence

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Innovation 2025年第5期6卷 100866页

作者： Ding, Zhaohao Wang, Jianxiao Song, Yiyang Zheng, Xiaokang He, Guannan Chen, Xiupeng Zhang, Tiance Lee, Wei-Jen Song, Jie State Key Lab of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Beijing102206 China National Engineering Laboratory for Big Data Analysis and Applications Peking University Beijing100871 China Department of Electrical and Electronic Engineering University of Hong Kong Hong Kong999077 China Department of Industrial Engineering and Management College of Engineering Peking University Beijing100871 China Jan C. Willems Center for Systems and Control University of Groningen Groningen9700AB Netherlands Energy Systems Research Center University of Texas at Arlington ArlingtonTX76019 United States

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Study on path-optimization by grade for sorting dies

Study on path-optimization by grade for sorting dies

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2010 IEEE International Conference on Mechatronics and Automation, ICMA 2010

作者： Wu, Tao Li, Bin Wang, Longwen Huang, Yu National Numerical Control System Engineering Research Center Huazhong University of Science and Technology Wuhan 430074 China

ISBN: (纸本)9781424451418

Semiconductor light-emitting die (LED) has now become one of the most popular lighting devices. Before dies are put into process of package, they need be inspected and sorted strictly, so following waste will be saved. Cost of inspection and sort is relatively high, it is urgently needed to improve sort efficiency and reduce sort time. To get efficient solution, detailed view of working flow is presented to make analysis on performance and its influenced factors. It can be revealed that positioning of recycle bins is the major influence factor. Performance may decrease by 3.2 to 0.9 dies per second. Because of this, a path optimization method according grade priority is put forward. In this way, the dies with same grade should get priority to be sorted first. Techniques about die search and merge by grade, traversal of forward and backtrack with cross priority are described in detail. With results of reasonable simulations and a case experiment, this optimization is proved highly effective to reduce sort time and improve dies production rate. © 2010 IEEE.

关键词： Motion planning

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Automatic detect and match of LED dies basing on position relations between adjacent dies

Automatic detect and match of LED dies basing on position re...

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International Conference on Machine Learning and Cybernetics

作者： Wu, Tao Li, Bin Wang, Long-Wen Huang, Yu National Numerical Control System Engineering Research Center Huazhong University of Science and Technology Wuhan 430074 China

ISBN: (纸本)9781424465262

In order to improve production efficiency, inspecting and sorting of LED dies are done respectively in prober and sorter. During the inspection, dies may be broken, fragmentized, tiny moved, or deflected slightly, besides, visual scan can also lead to location deviation when the wafer is moved from prober to sorter. All of this can cause some dies mismatch in the sorting stage, which is never allowed. In order to get integrated match of dies, the position relations between adjacent dies are considered, techniques including diagnosing criterion of position relatives, redundant visual scanning, forward and backtrack algorithm with cross priority are put forward. It is proved with experimental results that such re-index approach is more applicable than traditional index method. When dies arrange in good order, match rate is more than 99.5%, by compassion, that of traditional index method is less than 92%. When the wafer is deflected slightly or locally fragmentized, match rate of the former is more than 92.5%, by contrast, that of the latter is less than 50% in same situation. © 2010 IEEE.

关键词： Dies

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The method and experimental research on seam tracking and dual-beam laser welding for T-type welding seam

The method and experimental research on seam tracking and du...

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2014 International Conference on Manufacturing Technology and Electronics Applications, ICMTEA 2014

作者： Wang, Ping Jiang Wang, Xin Lin, Ling Wu, Yang National Numerical Control System Engineering Research Center Huazhong University of Science and Technology WuhanHubei China

ISBN: (纸本)9783038353287

Aimed at the goal of improving the quality and the efficiency of welding for T-type welding seam, This paper put forward a method to track the seam by using the vision sensor. Machine tool main motion trajectory is generated from the numerical model of the parts. The position of two welding torches are adjusted independently based on the machine tool main motion trajectory to ensure the welding precision. Two sets of adjusting mechanism are needed for T-type welding seam. The vision sensor measure the seam and pass the deviation signal to the CNC system. The CNC system adjust the position of the welding torch installed on the cross slide table to reach the goal of seam tracking and dual-beam laser welding for T-type welding seam. Practice shows that this system for T-type welding seam dual-beam laser welding is easy to operate and can improve the quality and the efficiency. © (2014) Trans Tech Publications, Switzerland.

关键词： Seam welding

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