检索结果-内蒙古大学图书馆

CAD FOR THE DESIGN AND EVALUATION OF INDUSTRIAL control-SYSTEMS

IEE PROCEEDINGS-D control THEORY AND APPLICATIONS 1984年第4期131卷 125-139页

作者： SANDOZ, DJ Department of Electrical Engineering University of Manchester Manchester UK

The paper reviews the current state of development of a CAD facility for the design and evaluation of industrial process control systems. The facility is generalised to support multiple control systems and to coordinate their operations. The individual control systems may involve compensation for interaction, disturbance and time delay. The design procedures use least-squares analysis for identification, dynamic programming for control system design and simulation for evaluation of performance. The facility permits a systematic approach for building sets of hierarchical controllers with the objective of supervising the operation of complex processes. Design studies relating to real plant data are presented.

关键词： CAD facility control engineering computing hierarchical systems control system CAD control system design industrial control systems hierarchical controllers control in industrial production systems Industrial applications of IT multiple control systems dynamic programming least-squares analysis identification industrial control control system analysis computing

来源：评论

学校读者我要写书评

暂无评论

Aerodrome situational awareness of unmanned aircraft: an integrated self-learning approach with Bayesian network semantic segmentation

引用

IET INTELLIGENT TRANSPORT SYSTEMS 2018年第8期12卷 868-874页

作者： Lu, Bowen Coombes, Matthew Li, Baibing Chen, Wen-Hua Zhong An Informat & Technol Serv Co Ltd Shenzhen Peoples R China Loughborough Univ Technol Dept Aeronaut & Automot Engn Loughborough LE11 3TU Leics England Loughborough Univ Technol Sch Business & Econ Loughborough LE11 3TU Leics England

It is expected that soon there will be a significant number of unmanned aerial vehicles (UAVs) operating side-by-side with manned civil aircraft in national airspace systems. To be able to integrate UAVs safely with civil traffic, a number of challenges must be overcome first. This study investigates situational awareness of UAVs' autonomous taxiing in an aerodrome environment. The research work is based on a real outdoor experimental data collected at the Walney Island Airport, the UK. It aims to further develop and test UAVs' autonomous taxiing in a challenging outdoor environment. To address various practical issues arising from the outdoor aerodrome such as camera vibration, taxiway feature extraction, and unknown obstacles, the authors develop an integrated approach that combines the Bayesian-network based semantic segmentation with a self-learning method to enhance situational awareness of UAVs. Detailed analysis of the outdoor experimental data shows that the integrated method developed in this study improves the robustness of situational awareness for autonomous taxiing.

关键词： Bayes methods autonomous aerial vehicles learning (artificial intelligence) air traffic aerospace computing control engineering computing image segmentation aerodrome situational awareness unmanned aircraft integrated self-learning approach Bayesian network semantic segmentation unmanned aerial vehicles manned civil aircraft national airspace systems civil traffic UAV autonomous taxiing real outdoor experimental data collection Walney Island Airport UK outdoor aerodrome environment

来源：评论

学校读者我要写书评

暂无评论

Cooperative task scheduling for networked uninhabited air vehicles

引用

IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS 2008年第2期44卷 561-581页

作者： Gil, Alvaro E. Passino, Kevin M. Ganapathy, Sriram Sparks, Andrew Ohio State Univ Columbus OH 43210 USA USAF Res Lab Wright Patterson AFB OH 45433 USA

In the work presented here, we study a cooperative control problem for a network of uninhabited air vehicles (UAVs) where it is assumed that after deployment a set of tasks is given to a group of UAVs and the UAVs must cooperate to decide which UAV should process each task. The cooperation must occur during real-time operation due to a need to repeatedly process each task, in spite of imperfect communications (e.g., messages with random but bounded delays), and the possibility that tasks "pop-up." We show how to view this as a cooperative scheduling problem, and how to derive bounds on mission-level performance metrics. Simulations are used to compare the approach with a noncooperative strategy and to provide design guidelines for the cooperative scheduler.

关键词： control engineering computing cooperative systems remotely operated vehicles scheduling space vehicles cooperative control problem cooperative task scheduling design guidelines mission-level performance metrics networked uninhabited air vehicles noncoope Unmanned vehicles REAL TIME OPERATION vehicle Unmanned Aerial Vehicle control engineering computing coordinated control cooperative systems TASK SCHEDULING Religious Missions Space vehicles

来源：评论

学校读者我要写书评

暂无评论

Review of the automatic train control system for Cairo Metro Line 2

引用

POWER engineering JOURNAL 1998年第5期12卷 217-228页

作者： Banerjee, MK El Hoda, N Parsons Brinckerhoff Int USA New York NY 10119 USA

The compatibility of AC propulsion systems with coded train detection and on-board speed code reception systems is always a concern. A review of an automatic train control system commissioned for Greater Cairo Metro System is presented. The compatibility of track-to-train transmission with the inverter-controlled AC drive and the 750 V DC third-rail power supply is also examined.

关键词： a.c. machines Electromagnetic compatibility and interference traffic control AC motor drives Power convertors and power supplies to apparatus DC third-rail power supply onboard speed code reception systems 750 V inverter-controlled AC drive power supplies to apparatus electric propulsion Drives automatic train control system Rail-traffic system control Traffic engineering computing rapid transit systems EMI compatibility railways coded train detection track-to-train transmission electromagnetic compatibility Distribution networks AC propulsion systems electromagnetic interference transport control Transportation invertors rail traffic Greater Cairo Metro System control engineering computing Cairo Metro line 2

来源：评论

学校读者我要写书评

暂无评论

Alternative implementation of vector control for induction motor and its experimental evaluation

引用

IEE PROCEEDINGS-ELECTRIC POWER APPLICATIONS 2000年第1期147卷 7-13页

作者： Nerys, JWL Hughes, A Corda, J Univ Fed Goias Escola Engn Eletr Goiania Go Brazil Univ Leeds Sch Elect & Elect Engn Leeds LS2 9JT W Yorkshire England

An implementation of vector control for induction motors is presented, where there is no need for information concerning the rotor flux position and matrix transformations. It shows how the stator reference phase currents can be generated and changed in real time from digitally stored sinewaves, so to achieve independent control of torque at constant rotor flux. Experimental evaluation of the new scheme is made for sudden changes in the load torque and for the step changes of the speed reference signal. The arrangement of a DC load system enabling sudden changes in load torque is also described.

关键词： Asynchronous machines digital control constant rotor flux machine vector control control engineering computing Power engineering computing machine theory power engineering computing load torque digitally stored sinewaves independent torque control real-time systems torque control control performance induction motors stators control design DC load system induction motor vector control control system synthesis Mechanical variables control control system analysis and synthesis methods control of electric power systems stator reference phase currents speed reference signal machine testing

来源：评论

学校读者我要写书评

暂无评论

COMPUTER-BASED SUPERVISORY control AND ENERGY MANAGEMENT-SYSTEM FOR THE CITY OF CAPE-TOWN

引用

IEE PROCEEDINGS-C GENERATION TRANSMISSION AND DISTRIBUTION 1988年第1期135卷 41-50页

作者： MALT, APJ CLARKE, GD ROBINSON, PE Power and Water Systems Consultants Ltd. Henley on Thames UK Merz and McLellan Ltd. Newcastle upon Tyne UK

Cape Town City Council is responsible for the supply of electricity to the city area. To achieve this, the council owns and operates thermal and pumped-storage power stations and extensive HV transmission and LV distribution networks. Power is also purchased from the national supply authority. Prior to the introduction of the control system described in this paper limited supervisory control and data acquisition facilities existed to provide some degree of remote control for the network. In addition to duties associated with supervision of both the HV and LV networks, the control centre operators were also responsible for energy management involving generator scheduling and control, and load-shedding when required. To assist the operators in their extensive and onereous duties a new computer-based control centre has been developed and was commissioned in 1984. Because of the unusual mix of power sources special software had to be developed for energy management purposes. Descriptions are given of the functional and practical aspects of the control centre, and of associated hardware and software facilities and also some commissioning experiences.

关键词： computer-based control centre Pumped storage stations and plants Power engineering computing Power transmission, distribution and supply transmission networks energy management system distribution networks power system computer control HV transmission networks pumped-storage power stations thermal power stations control of electric power systems electricity supply Power system management, operation and economics LV distribution networks control engineering computing Thermal power stations and plants power stations Cape Town City Council

来源：评论

学校读者我要写书评

暂无评论

A Unified Cloud Platform for Autonomous Driving

引用

COMPUTER 2017年第12期50卷 42-49页

作者： Liu, Shaoshan Tang, Jie Wang, Chao Wang, Quan Gaudiot, Jean-Luc PerceptIn Sunnyvale CA 94085 USA South China Univ Technol Sch Comp Sci & Engn Guangzhou Guangdong Peoples R China Baidu Autonomous Driving Unit Beijing Peoples R China Univ Calif Irvine Dept Elect Engn & Comp Sci Irvine CA USA

Tailoring cloud support for each autonomous-driving application would require maintaining multiple infrastructures, potentially resulting in low resource utilization, low performance, and high management overhead. To address this problem, the authors present a unified cloud infrastructure with Spark for distributed computing, Alluxio for distributed storage, and OpenCL to exploit heterogeneous computing resources for enhanced performance and energy efficiency.

关键词： Automobiles Cloud computing control engineering computing Energy Efficiency Heterogeneous computing Resources Open CL Distributed Storage Alluxio Distributed computing Spark Unified Cloud Infrastructure Autonomous Driving Unified Cloud Platform Autonomous Automobiles Field Programmable Gate Arrays Distributed computing Cloud computing Computational Modeling Autonomous Vehicles Self Driving Cars Distributed computing Distributed Storage Heterogeneous computing Simulation Testing Model Training Map Generation Hadoop Map Reduce Spark Alluxio Open CL YARN Linux Containers LXC Hadoop Distributed File System HDFS Robot Operating System ROS Resilient Distributed Dataset RDD Bin Pipe RDD Parallel Distributed Deep Learning Paddle Baidu Convolution Neural Network CNN Li DAR

来源：评论

学校读者我要写书评

暂无评论

Simple and fast computation photovoltaic emulator using shift controller

引用

IET RENEWABLE POWER GENERATION 2020年第11期14卷 2017-2026页

作者： Ayop, Razman Wei Tan, Chee Lawan Bukar, Abba Univ Teknol Malaysia Sch Elect Engn Utm Johor Bahru 81310 Malaysia Univ Maiduguri Fac Elect Engn PMB 1069 Borno Nigeria

Photovoltaic (PV) emulator (PVE) is a non-linear power supply that produces a similar output to that of the PV module. It requires a closed-loop controller such as the proportional-integral (PI) and fuzzy logic controllers to operate properly. The PI controller has a low-computational burden and is not robust since the transient response varies under different load conditions. Although the fuzzy logic controller is robust, it requires high-computation capability. This study proposed an alternative approach called the shift controller for the PVE to easily compute and maintain a fast transient response under various load conditions. The performance of the proposed shift controller for the PVE is compared with the performance of the PVEs using the PI and fuzzy logic controllers, respectively. The controllers are simulated using MATLAB/Simulink and implemented using dSPACE ds1104 for experimental validation. The results show that the proposed shift controller computes up to 18 times faster than the fuzzy logic controller. The proposed controller also responds faster to load change than the PI controller.

关键词： PI control photovoltaic power systems transient response fuzzy control closed loop systems computer simulation control engineering computing power engineering computing computational complexity fast computation photovoltaic emulator PVE nonlinear power supply PV module closed-loop controller fuzzy logic controllers PI controller low-computational burden transient response varies high-computation capability fast transient response shift controller MATLAB-Simulink dSPACE ds1104

来源：评论

学校读者我要写书评

暂无评论

SELF-TUNING control

引用

PROCEEDINGS OF THE INSTITUTION OF ELECTRICAL ENGINEERS-LONDON 1979年第6期126卷 633-640页

作者： CLARKE, DW GAWTHROP, PJ Department of Engineering Science University of Oxford Oxford UK

Self tuning is an important new branch of control which is attracting increasing theoretical and practical interest. The objective of self tuning is to control systems with unknown constant or slowly varying parameters, so theoretical interest is concerned with the stability, performance and convergence of the recursive algorithms involved, while practical interest derives from its potential as a simple controller commissioning tool, both as a method for controlling time-varying or nonlinear plant over a range of operating points, and for dealing with batch problems where the plant or materials vary over successive batches. This paper summarises and expands previous work on the design of self-tuning controllers. It discusses the closed-loop properties of various classes of self tuner, convergence concepts and results, and some of the technical problems involved with implementing self tuners on small computers or microprocessors.

关键词： controller commissioning tool controllers microprocessor implemented systems Nonlinear control systems control system analysis and synthesis methods performance recursive algorithms convergence computerised control control system synthesis self tuning control controllers control engineering computing nonlinear control systems

来源：评论

学校读者我要写书评

暂无评论

MULTISERVER COMPUTER-controlLED QUEUING SYSTEM WITH PREEMPTIVE PRIORITIES AND FEEDBACK

引用

PROCEEDINGS OF THE INSTITUTION OF ELECTRICAL ENGINEERS-LONDON 1973年第11期120卷 1331-1336页

作者： CHAN, WC CHUNG, WK MAA, DY UNIV CALGARY DEPT ELECT ENGN2920 24 AVE NWCALGARY T2N 1N4ALBERTACANADA

The paper is concerned with the investigation of a multiserver computer-controlled queuing system with preemptive priorities and feedback. A formula for the generating function of the state probabilities of the system is derived and a method using the transition probabilities of a Markov chain for determining the first waiting-time distribution in the system is presented.

关键词： first waiting time distribution feedback probability Queueing theory Statistics generating function queueing theory state probabilities control engineering applications of computers transition probabilities Markov processes control engineering computing multiserver computer controlled queuing system preemptive priorities Markov chain

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：