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Industrial Cyber-Physical Systems (ICPS)

作者： Zihao Liang Shaoshuai Mou School of Aeronautics and Astronautics Purdue University IN USA

ISBN: (数字)9798350363012

ISBN: (纸本)9798350363029

this paper presents an incremental approach for addressing inverse optimal control (IOC) with only system output trajectory available. the unknown objective function is expressed as a weighted combination of features, where the weights are unknown. the proposed approach utilizes the optimality conditions for optimal state trajectory and the system output equation to iteratively solve the IOC problem with the initial optimal state available. In the case when the initial optimal state is unavailable, by utilizing the observed system output segments, we proposed a method to incrementally estimate the optimal initial state. Combining the aforementioned methods, we proposed an incremental algorithm to estimate the unknown weights. the method’s effectiveness is demonstrated through simulations on a 2-link robot arm and a 6-DoF maneuvering quadrotor system. In both cases, only limited system output segments are available.

关键词： Service robots Optimal control Cyber-physical systems Manipulators Linear programming Mathematical models 6-DOF

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Application of contemporary programming techniques in health monitoring software of suspension spanning structure

Application of contemporary programming techniques in health...

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the 7th international conference on Bridge Maintenance, Safety and Management (IABMAS 2014)(第七届国际桥梁维护安全与管理会议)

作者： D.S.Shan J.Dong J.C.Yang S.X.Zhang I.Khan Z.Huang Bridge Engineering Department Southwest Jiaotong UniversityChengduSichuanChina

Serving as a powerful tool to ensure the bridge safety by long term monitoring and operational condition assessment,bridge health monitoring system becomes more extensive application in real bridge engineering *** the implementation of bridge health monitoring system,the sensor installation and data acquisition got more emphasis especially in China (Shan et al.2011).In order to extract more accurate and effective bridge structural information from the measured data acquired by the bridge health monitoring system,it is an essential requirement to develop the software system with powerful data analysis and processing function for bridge health monitoring system.

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Integrating heterogeneous agent programming platforms within artifact-based environments 08

Integrating heterogeneous agent programming platforms within...

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Proceedings of the 7th international joint conference on Autonomous agents and multiagent systems - Volume 1

作者： Alessandro Ricci Michele Piunti L. Daghan Acay Rafael H. Bordini Jomi F. Hübner Mehdi Dastani Università di Bologna Cesena (FC) Italy Univ. di Bologna The University of Melbourne Victoria Australia University of Durham Durham UK ENS Mines Saint-Etienne Saint-Etienne France Utrecht University TB Utrecht Netherlands

ISBN: (纸本)9780981738109

"Agents and Artifacts" (A&A) and CARTAGO are becoming increasingly popular as, respectively, a general-purpose programming model and a related infrastructure for developing shared computational environments in agent-based software systems. However, so far there has been no work on developing multiagent systems (MAS) where agents implemented and deployed in different agent-programming platforms can interact as part of the same MAS with a shared environment. Due to the generality of CARTAGO environments and its Java-based implementation, we have successfully implemented an open multi-agent system where heterogeneous agents developed with different platforms---namely Jason, 2APL as BDI-based approaches and simpA as an activity-oriented approach rather than BDI-based---work together in shared workspaces where they interact and cooperate by dynamically creating and using shared artifacts, analogously to human working environments. this paper shows how this was achieved by first presenting a general model for incorporating a theory of use and observation of artifacts in cognitive agents, then describing a general approach for developing such heterogeneous MAS using CARTAGO integrated with existing agent-oriented programming platforms.

关键词： multi-agent systems platforms artifact-based computational environments CARTAGO

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Prospects of Digitalization of the Animal Husbandry Process in the Context of the Digital Economy: Economic-Mathematical Modeling of the Problem of Feed Ration and programming in Python 23

Prospects of Digitalization of the Animal Husbandry Process ...

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Proceedings of the 7th international conference on Future Networks and Distributed Systems

作者： Kuvonchbek Rakhimberdiev Akram Ishnazarov Rustem Adilchaev O Nazarbaev R Utemuratov Saglara Boldireva Department of Mathematical Methods in Economics Tashkent State University of Economics Uzbekistan Department of Economic Karakalpak state university Uzbekistan Department of Algorithmization and programming technologies Karakalpak state university Uzbekistan Department of Management Karakalpak state university Uzbekistan Department of Mathematical Methods in Economics Kalmyk State University Russia

ISBN: (纸本)9798400709036

For the application of economic and mathematical methods in practical activities in modern conditions, material, scientific and personnel prerequisites have been created. their use makes it possible to carry out complex and very time-consuming calculations that were previously impossible. the article considers economic and mathematical methods, features of their application in agricultural organizations. Taking into account the production and technological parameters, the conditions of a particular agricultural organization, a model was developed and a methodology for solving the problem of optimizing the feed ration of farm animals was developed, including four groups of restrictions: on the balance of nutrients; by dry matter content; by the content of trace elements and vitamins; by the specific weight of food groups in the diet. the target function is the minimum cost of the daily ration. the introduction of an optimal diet will significantly reduce the cost of feed, and, consequently, the cost of production. We also algorithmize the issue of feed ration for livestock using economic mathematical modeling. Let's write the program code using the Python programming language using the built-in algorithm.

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Solution for PWM converter switching for Voltage Source Inverter using Non-Traditional Method

Solution for PWM converter switching for Voltage Source Inve...

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2007 international conference on Power Electronics and Drive Systems (PEDS 2007), vol,4

作者： V. Jegathesan Jovitha Jerome Karunya University Coimbatore Tamil Nadu India PSG College of Technology Coimbatore Tamil Nadu India

this paper presents an efficient and reliable evolutionary-programming-based algorithm for specific harmonic elimination (SHE) switching pattern. this method eliminates the considerable amount of lower order line current harmonics in Pulse Width Modulation (PWM) inverter. Determination of pulse pattern for the elimination of some lower order harmonics of a PWM inverter necessitates solving a system of nonlinear transcendental equations. Evolutionary programming is used to solve nonlinear transcendental function for PWM-SHE. In this proposed method 11th and 13th harmonics are eliminated using Evolutionary programming. Simulation results using Matlab/Simulink are carried out to validate the solution.

关键词： Converter Harmonics Evolutionary programming (EP) Pulse Width Modulation (PWM) Selective Harmonic Elimination (SHE)

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Transformer Partial Discharge Location by Optimized Ultrasonic Propagation Path Search

Transformer Partial Discharge Location by Optimized Ultrason...

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Energy, Electrical and Power Engineering (CEEPE), international conference on

作者： Guang-Yu Shi Kang Wang Guo-Bin Wang Xiao-Lin Xu Transmission and Transformation Equipment Technology Research Center Fujian Electrical Power Research Institute Fuzhou China

ISBN: (数字)9798350375794

ISBN: (纸本)9798350375800

Partial discharge detection and location are vital to diagnose insulation conditions of power transformer. Ultrasonic detection has the advantages of anti-interference, low loss and flexible application, and has been widely applied in partial discharge location. However, the propagation paths of ultrasonic signal are complex in transformer structural components. Conventional locating method by direct wave shows a large error. In this paper, an optimized ultrasonic propagation path search method is proposed by considering the transformer interior structure and propagation paths of ultrasonic. the method is employed to determine an optimal arrangement of ultrasonic sensor in transformer tank, and the determined time differences are transferred into particle swarm optimization algorithm to solve location equations. A locating verification of two partial discharge sources is implemented on a 35 kV experiment transformer, and the optimized ultrasonic propagation path search method shows higher locating accuracy of partial discharge. the average locating errors of two sources are 12.6 cm and 23.9 cm respectively, which are smaller than that of conventional methods (17.4 cm and 45.9 cm by GA, 47.5 cm and 43.6 cm by ICA).

关键词： Partial discharges Power engineering Insulation Accuracy Search methods Linear programming Acoustics

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Rio file cache: surviving operating system crashes

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Computer architecture news 1996年第Special Issu期24卷 74-83页

作者： Chen, P.M. Ng, W.T. Chandra, S. Aycock, C. Rajamani, G. Lowell, D. Univ of Michigan

One of the fundamental limits to high-performance, high-reliability file system is memory's vulnerability to system crashes. Because memory is viewed as unsafe, systems periodically write data back to disk. the extra disk traffic lowers performance, and the delay period before data is safe lowers reliability. the goal of the Rio (RAM I/O) file cache is to make ordinary main memory safe for persistent storage by enabling memory to survive operating system crashes. Reliable memory enables a system to achieve the best of both worlds: reliability equivalent to a write-through file cache, where every write is instantly safe, and performance equivalent to a pure write-back cache, with no reliability-induced writes to disk. To achieve reliability, we protect memory during a crash and restore it during a reboot (a ″warm″ reboot). Extensive crash test show that even without protection, warm reboot enables memory to achieve reliability close to that of a write-through file system. Adding protection makes memory even safer than a write-through file system while adding essentially no overhead. By eliminating reliability-induced disk writes, Rio performs 4-22 times as fast as a write-through file system, 2-14 times as fast as a standard Unix file system, and 1-3 times as fast as an optimized system that risks losing 30 seconds of data and metadata.

关键词： Computer programming

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A Mixed Integer programming Approach to Air Cargo Load Planning with Multiple Aircraft Configurations and Dangerous Goods

A Mixed Integer Programming Approach to Air Cargo Load Plann...

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international conference on Frontiers of Industrial Engineering (ICFIE)

作者： Eugene Y.C. Wong Kev K. T. Ling The Hang Seng University of Hong Kong Hong Kong

ISBN: (数字)9781728106342

ISBN: (纸本)9781728194509

Air cargo business is highly uncertain and dynamic. An airline needs to manage its air cargo loading operations with efficient cargo consolidation, accurate load planning, high level of safety precautions, limited cargo planning period and careful yield management in order to stay competitive and, in extreme situations, survive. To achieve these requirements for air freighters, a mathematical model and optimisation tool is developed to assist its air cargo load planning for the airline which handles about 327,500 tons of cargoes each year. A small improvement in its load planning, in terms of the best allocation and position of unit load devices to be stowed in an aircraft, can contribute substantially to its operational and financial performance. this study, applying in an cargo airline, aims to maximise cargo loading profit as well as improve the operation efficiency under the constraints of aircraft configuration, dangerous goods segregation, weight and balance, and flight safety. In future, the model can cater not only the cargo load planning of freighters but also passenger aircraft to improve the operational performance by considering over-sized cargoes.

关键词： Aircraft Loading Atmospheric modeling Load modeling Planning Optimization Fuels

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Adaptive Control of Extracorporeal Membrane Oxygenation Based on Extremum Seeking Control

Adaptive Control of Extracorporeal Membrane Oxygenation Base...

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Advanced Algorithms and Control Engineering (ICAACE), international conference on

作者： Hanlin Wang Shiwei Wang Wei Zhang Nan Liang Automation College Chongqing University of Posts and Telecommunications Chongqing China Bioengineering College Chongqing University Chongqing China Henan Academy of Sciences Institute of Applied Physics Co. Ltd Zhengzhou Henan China

ISBN: (数字)9798350361445

ISBN: (纸本)9798350361452

In recent years, multiple global pandemics have raised concerns about respiratory diseases. As an advanced life support tool for respiratory failure, extracorporeal membrane oxygenation (ECMO) has become increasingly important. In order to improve the oxygenation effect and adaptive control ability of the system, researchers have made efforts in membrane materials, blood pumps, and control methods. this article proposes a method of using extremum seeking to control treatment effectiveness by adjusting pressure adaptively. Firstly, fit the oxygen dissociation curve and carbon dioxide dissociation curve, and establish a flow-pressure model of the system based on the Ideal Gas Law and gas pump performance curve. then construct the objective function and conduct system simulation with the perturbation-based extremum seeking control. the results show that the algorithm enable the system to automatically search and reach the extreme point of the objective function, improving the comprehensive effect of ECMO therapy.

关键词： Adaptation models Carbon dioxide Linear programming Search problems Ventilation Stability analysis Real-time systems

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New efficiency-stability criterion in a rescheduling problem with dynamic jobs weights

New efficiency-stability criterion in a rescheduling problem...

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international conference on Control, Decision and Information Technologies (CoDIT)

作者： A. Tighazoui C. Sauvey N. Sauer Université de Lorraine Metz France

ISBN: (数字)9781728159539

ISBN: (纸本)9781728159546

In the context of the fourth revolution, today's industry is developing new technologies and solutions for the production management. Moreover, customers' practices are also changing, they can modify or cancel an order at any time, thus impacting the already established planning. therefore, rescheduling is necessary to revise the initial schedule in a cost-effective manner. In this work, a new performance measure is investigated, considering simultaneously the weighted waiting time as an efficiency criterion, and the total completion time deviation as a stability criterion. the objective function which considers several criteria, could be very significant and helpful for industrial actors. In addition, an innovative concept is introduced, consisting in increasing the jobs weight at each time they are rescheduled, to take fairly into account the low weight earliest jobs. this paper addresses a parallel machine rescheduling problem, disrupted by new jobs arrival. Based on predictive reactive strategy, a linear mathematical model is developed, as well as an iterative methodology to solve the described problem. Finally, numerical results are analyzed to show the effect produced by the combination of efficiency and stability criteria.

关键词： Schedules Stability criteria Mathematical model Parallel machines Numerical stability Linear programming Time measurement

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