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Retraction Note: Evaluation on diabetic plantar pressure data-set employing auto-segmentation technologies

Neural Computing and Applications 2024年第24期36卷 15219-15219页

作者： Chen, Hongwei Cao, Luying Li, Zairan Hemanth, D. Jude Wu, Lijun de Albuquerque, Victor Hugo C. Shi, Fuqian Department of Orthopedics Yiwu Central Hospital Wenzhou Medical University Wenzhou People’s Republic of China Institute of Digitized Medicine Wenzhou Medical University Wenzhou People’s Republic of China Tianjin Key Laboratory of Process Measurement and Control School of Electrical Engineering and Automation Tianjin University Tianjin People’s Republic of China Department of ECE Karunya University Coimbatore India Programa de Pós-Graduação Em Informática Aplicada Universidade de Fortaleza Fortaleza Brazil

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Development of a smart identification and sorting system

Development of a smart identification and sorting system

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2018 World Congress on engineering and Computer Science, WCECS 2018

作者： Kumar, Shubham Ashi Khanna, Pradeep Department of Instrumentation and Control Netaji Subhas Institute of Technology New Delhi India Department of Manufacturing Process and Automation Engineering South Africa

ISBN: (纸本)9789881404909

Sorting of the components on the basis of their features is an important process extensively required in industries mainly on assembly and production lines. Such systems are of significant importance in selective assembly processes where the part to be delivered is decided on the basis of real time requirements. This not only does away with the requirement of manual labor, but also addresses the issue of mistakes arising from fatigue and negligence of human worker, plus there is definitely an increase in productivity by the use of such systems as they offer the advantage of complete automation of the process. The present system has been developed with a view to provide an effective, simple and low cost solution to identification and sorting system applications. The system has been developed by using less costly and robust sensors and actuators such that the electronic circuitry involved is also simple and can meet the demands where flexibility of a concern because the present system can quickly be reprogrammed to meet any changed circumstance within the operating range of the system. System presently developed is based on sorting on the basis of component color. The system does not need to hit its home position each time it makes a delivery, rather it takes its present position as the reference and can make a quick move to the next delivery, saving a significant time. The system has successfully been tested and is found to give an error less than 1% in total number of trials conducted. © 2018 Newswood Limited. All rights reserved.

关键词： Real time systems

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Stability Analysis and Design of Switched Saturated Systems Based on Antiwindup Technique

Stability Analysis and Design of Switched Saturated Systems ...

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Chinese control Conference (CCC)

作者： Xinquan Zhang Xiaoyin Li Yuzhong Wang Ke Mu School of Information and Control Engineering Liaoning Shihua University Fushun P. R. China School of Foreign Languages Liaoning Shihua University Fushun P. R. China State Key Laboratory of Synthetical Automation for Process Industries Northeastern University Shenyang P. R. China

ISBN: (数字)9789881563903

ISBN: (纸本)9781728165233

The problem of stability analysis and anti-windup design is investigated for a class of switched linear systems subject to actuator saturation by using the common Lyapunov function method. Suppose that a group of dynamic output controllers have been designed and they can stabilize the closed-loop system in the absence of saturation. Then, the anti-windup compensators are designed, which aims for enlarging the domain of attraction of system with saturation. Finally, the anti-windup compensators are calculated by solving an optimization problem with linear matrix inequalities (LMI) constraints. A numerical example is given to show the effectiveness of proposed method.

关键词： Switches Actuators Switched systems Symmetric matrices Lyapunov methods Stability analysis Linear matrix inequalities

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A Multi-Echelon Supply Chain Model for Sustainable Electricity Generation from Municipal Solid Waste

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IFAC-PapersOnLine 2019年第1期52卷 610-615页

作者： M. Mohammadi S-L. Jämsä-Jounela I. Harjunkoski Research Group of Process Control and Automation Department of Chemical and Metallurgical Engineering School of Chemical Engineering Aalto University FI-00076 Espoo Finland ABB Corporate Research Center Germany Wallstadter Str. 59 68526 Ladenburg Germany

This paper addresses a mixed integer linear programming model for the optimal utilization of municipal solid waste in a multi-echelon supply chain network. The model focuses on tactical and operational level decisions including the supply, production, and distribution. It aims to maximize the annual net profit by optimizing the choice of waste-to-energy technologies through observing the related capacity and environmental constraints and market demands. The proposed sustainable waste management model not only reduces the burden on the environment, but also optimally distributes the solid waste through the system and converts it into electricity, thus contributing towards energy supply. Sensitivity analyses are conducted to investigate the effects of changes in waste separation rate, energy conversion rate, and energy efficiencies on the system performance and on the environment. The model is solved using GAMS/CPLEX.

关键词： municipal solid waste waste management waste-to-energy sustainability supply chain management mixed integer linear programming

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Preparation and Sensing Characteristics of Double-Layer Spring Fabry-Perot Pressure Sensor Based on Two-Photon Polymerization 3D Printing

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Guangxue Xuebao/Acta Optica Sinica 2025年第7期45卷

作者： Chen, Maoqing Zhang, Chi Qiao, Shouzheng He, Yiyang Liu, Yingxuan Zhao, Yong School of Control Engineering Northeastern University at Qinhuangdao Hebei Qinhuangdao066004 China State Key Laboratory of Synthetical Automation for Process Industries Northeastern University Liaoning Shenyang110004 China Hebei Key Laboratory of Micro-Nano Precision Optical Sensing and Measurement Technology Hebei Qinhuangdao066004 China

Objective In the initial diagnosis of prostate cancer, digital rectal examination is usually the preferred method. However, due to the high subjectivity of the test, more objective and accurate tools are needed to evaluate and predict the development of prostate cancer. To address this, we propose a double-layer spring Fabry-Perot (FP) pressure sensor based on femtosecond laser two-photon polymerization 3D printing technology, which is prepared on the fiber end face for mechanical characterization of prostate cancer lesions. Unlike the traditional single-layer spring structure, the sensor adopts a double-layer spring structure, with the double-layer springs spliced together. This design ensures high sensitivity while also offering a large pressure detection range, solving the problem where the single-layer spring structure is either too long, affecting sensitivity, or too short, making it prone to breaking. The double-layer spring FP pressure sensor is compact and highly sensitive, with pressure detection resolution reaching the nN level. It can serve as a stable and reliable force sensor for the early diagnosis of prostate cancer. Methods The structure of the double-layer spring FP pressure sensor is designed using COMSOL software, and the parameters affecting the performance of the sensor are simulated and analyzed to achieve a balance between high sensitivity and a high development success rate. After designing the sensor structure, it is fabricated using femtosecond laser two-photon polymerization 3D printing technology. First, the fiber end face is preprocessed. The processed optical fiber is then placed in the fixture, and the fixture is fixed in the printing device. Next, the photoresist is dropped onto the center of the lens, and the micro-displacement platform is used to control the position of the optical fiber. The optical fiber core is aligned with the center of the lens through the program. After that, the processed model file is exported to NanoWrite s

关键词： Fiber optic sensors

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Delays in Model Reduction of Chemical Reaction Networks

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IFAC-PapersOnLine 2018年第14期51卷 100-105页

作者： Lipták, György Hangos, Katalin M. Process Control Research Group Systems and Control Laboratory Computer and Automation Research Institute Hungarian Academy of Sciences P.O. Box 63 BudapestH-1518 Hungary Department of Electrical Engineering and Information Systems University of Pannonia Veszprém Hungary

A novel engineering model reduction method is proposed in this paper that can be applied to a chemical reaction network (CRN) with chains of linear reactions. The reduced model is a delayed CRN with possibly different delays but with less state variables than the original model. As the first step of the model reduction, a decomposition method is also developed to transform chains with joint reactions into independent chains of linear reactions. The well known example of McKeithan's network is used as a case study to illustrate the basic concepts and the design method. © 2018

关键词： Reduction

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L2-gain Analysis for Switched Saturated Systems Based on Anti-windup Technique

L2-gain Analysis for Switched Saturated Systems Based on Ant...

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Chinese control Conference (CCC)

作者： Xinquan Zhang Xiaoyin Li Jiasheng Shi Shizhong Tong School of Information and Control Engineering Liaoning Shihua University Fushun P. R. China School of Foreign Languages Liaoning Shihua University Fushun P. R. China State Key Laboratory of Synthetical Automation for Process Industries Northeastern University Shenyang P. R. China

ISBN: (数字)9789881563903

ISBN: (纸本)9781728165233

In this paper, the problem on L 2 -gain analysis and anti-windup design is studied for linear switched saturated systems by the common Lyapunov function method. Firstly, the sufficient condition about tolerable disturbances is obtained and under this condition, the state trajectory that starts from the origin will be still on a bounded set. Then, we obtain the upper bound for restricted L 2 -gain. Furthermore, to determine the maximum capability of disturbance tolerance and the minimum upper bound of restricted L 2 -gain, the anti-windup compensators are computed by solving a constraints optimization problem. Finally, a numerical example is given to verify the effectiveness of proposed approach.

关键词： Switches Lyapunov methods Switched systems Actuators Electronic mail Trajectory

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Distributed delay model of the McKeithan’s network

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IFAC-PapersOnLine 2019年第7期52卷 33-38页

作者： György Lipták Katalin M. Hangos Process Control Research Group Systems and Control Laboratory Computer and Automation Research Institute Hungarian Academy of Sciences P.O. Box 63 H-1518 Budapest Hungary Department of Electrical Engineering and Information Systems University of Pannonia Veszprém Hungary

In this paper CRNs containing linear reaction chains with multiple joint complexes were considered in order to obtain an equivalent reduced order delayed CRN model with distributed time delays. For this purpose, our earlier method (Lipták and Hangos (2018)) for decomposing the chains of linear reactions with multiple joint complexes was used together with the "linear chain trick". An analytical expression for the kernel function of the distributed delay was also derived from the reaction rate coefficients of the linear reaction chains. Our approach was demonstrated using the example of the well known McKeithan’s network model of kinetic proofreading.

关键词： process control Delay Chemical Reaction Networks

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U-model enhanced control of Volterra series systems

U-model enhanced control of Volterra series systems

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第三十八届中国控制会议

作者： Quanmin Zhu Weicun Zhang Jing Chen Department of Engineering Design and Mathematics University of the West of England School of Automation and Electrical Engineering University of Science and Technology Beijing Key Laboratory of Advanced Process Control for Light Industry Jiangnan University

This study expands the U-model based control(U-control in short) concept and formulation, a universal model-independent framework for designing control systems, into Volterra series modelled nonlinear systems. With this framework, various Volterra series control schemes can be universally achieved with relative concise/general formulation. In techniques, this study takes U-model structure to realise U-Volterra series model conversion for model inversion and designs the invariant linear stable controller in a feedback loop to lay a basis for specifying system transient and steady state performances. Heuristically, a bench test example is used to demonstrate the effectiveness of the design procedure, as well as the routines in applications.

关键词： U-model based control U-control dynamic inversion Volterra series systems simulation studies

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Preface——Special Issue on New Directions in Nonlinear and Distributed control

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Journal of Systems Science & Complexity 2018年第1期31卷 1-3页

作者： LIU Tengfei XIN Bin JIANG Zhong-Ping State Key Laboratory of Synthetical Automation for Process Industries Northeastern University Shenyang 110819 China School of Automation State Key Laboratory of Intelligent Control and Decision of Complex Systems Beijing Advanced Innovation Center for Intelligent Robots and Systems Beijing Institute of Technology Beijing 100081 China Tandon School of Engineering New York University Brooklyn NY 11201 USA

Nonlinearity is ubiquitous in engineering and natural *** development of nonlinear control can be traced back to decades *** date,the research has reached the stage that emphasizes developing methodologies that can ha... 详细信息

关键词：控制问题非线性分布式工程应用程序电子物理自然系统生产线相互作用

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