Generic reconfiguration for restoration

This paper introduces and compares four algorithms by which reconfiguration for restoration of an arbitrary number of interdependent critical infrastructure systems can be achieved. A method of modeling systems called Graph Trace Analysis is used to enable generic operation on various system types. The algorithms described are compared with each other and with prior work when run on a model of an actual electrical distribution system. The described algorithms are also run on an example model to demonstrate the ability to reconfigure interdependent infrastructure systems.     

基于虚拟样机的可重构模块化机器人动力学分析

根据给定的工作任务分析确定可重构模块化机器人的构型后,进行机器人的轨迹规划和变量求解;然后采用牛顿-欧拉方法,并借助MATLAB软件设计用户界面计算和导出各个关节模块的实时控制变量值的文件,并将其导入ADAMS软件中进行动力学分析和仿真。     

动态可重构FPGA布局算法

SRAM(Static Random Access Memory)型FPGA凭借其动态结构调整的灵活性等特点, 被广泛应用于工业领域。针对动态可重构功能单元的布局问题, 分析了模拟退火解决方案的局限性, 提出了基于电路分层划分和时延驱动的在线布局算法。算法首先按最小分割原则将电路划分为一定数目的层, 然后按自顶向下的原则在芯片的每一层中布局划分出的层, 同时保证电路关键路径的延时最小。实验结果表明, 所述算法在时延、线长和运行时间方面均优于VPR算法。     

Major system change through stepwise reconfiguration: A multi-level analysis of the transformation of American factory production (1850–1930)

The common view is that major transitions come about through breakthroughs of technological discontinuities. This article proposes gradual and stepwise reconfiguration as an alternative transition pathway. In it, new elements are adopted in the existing socio-technical regime to help solve particular problems. But as more is learned and circumstances change, these elements may trigger further changes in technology, user practice, infrastructure, and policies, eventually altering the basic architecture of the regime. These notions are integrated in a multi-level perspective on transitions and system changes. The resulting reconfiguration perspective is illustrated with a historical case study of the transition from traditional factories to mass production in America (1850–1930). The analysis shows that mass production was the last step in a much longer reconfiguration process involving cumulative changes in machine tools, building materials, materials handling technologies, power generation, and power-distribution technologies. The reconfiguration perspective has wider relevance for other systems that function through the interplay of multiple technologies, e.g., agriculture, retailing, and hospitals.     

Reconfiguration solution for shaded PV panels using switching control

This paper applies a new dynamical electrical array reconfiguration strategy on photovoltaic (PV) panels arrangement based on the connection of all PV panels on two parallel groups to reach the 24 V requested by the considered load and providing a maximum output current by connecting in series the two groups. If one of the PV panels or more are shaded, dusty or faulty the connection of the others in the same group will be automatically modified to maintain the requested load output voltage. This dynamical reconfiguration allows also limiting the lost power, due to the incriminate panel, by switching off this panels and reconfiguration the topology. As a result, a real time adaptation of a switch matrix allows a self-ability to maintain a constant load voltage. Moreover, a minimum number of PV panels are switched off by isolating the effect of unhealthy panels. In addition, the proposed solution can also be applied for identifying and locating the shaded, dusty and faulty panel. Experimental setup has been built and the results validate the proposed method.     

Stochastics multi-objective modelling of simultaneous reconfiguration of power distribution network and allocation of DGs and capacitors

This paper suggests a method based on stochastic multi-objective modelling for optimally siting and sizing of distributed generations and capacitors and simultaneously network reconfiguration, in order to take more advantages of recent developed technologies. With respect to the widespread effect of uncertainties of load forecasting and market price, some strategies must be devised so as to well incorporate them into the problem. The mentioned problem can be regarded as a multi-objective optimisation problem for which NSGA-II accompanied by fuzzy set theory are chosen. The main aim of DisCo is to provide highly reliable power at the lowest possible costs. Besides, voltage deviation and voltage stability as the criteria of power quality in distribution networks and emission pollutant reduction are treated as independent objective functions. Eventually, to validate the effectiveness of the proposed scheme, simulations are carried out and the results are compared to the initial configuration.     

基于工控机平台的可重构开放式计算机数控系统软件开发

对五轴数控系统的主要任务进行分析及模块划分,开发以运动控制器为下位机,工控机为上位机的嵌入式可重构开放数控系统。对该系统的硬件结构构成、软件结构设计及开发人机界面的关键技术进行阐述。实验证明,该系统完全能满足现代数控机床对开放式数控系统的要求。     

Contingencies-based reconfiguration of distributed factory automation

In this paper, we describe our experience using a Java-based platform to implement an emerging real-time distributed control model (IEC 61499). We provide a simple example of a control application that is distributed across two devices (Dallas Semiconductor TINI boards) and also investigate how this distributed implementation can be exploited to enhance the system's fault tolerance using a contingencies-based approach to reconfiguration.     

高架与爬壁重构的船舶外板喷涂机器人设计

针对船舶外板喷涂机器人的设计,应用重构设计理论,提出了基于高架机器人与爬壁机器人的模块化重构设计思想,对重构机器人的关键技术进行了分析,包括高架关键技术、爬壁关键技术、共通关键技术,并进行了技术对比。最后,以某船厂的实际应用为例,对重构机器人设计指标、重构系统原理、重构机械模块和控制系统重构模块进行了设计与研究。     

低成本GPS姿态和航向系统的设计

本文采用三块Rockwell公司生产的Jupiter OEM板、PC104 586工控机及其接口板研制成低成本GPS姿态系统样机。基于Jupiter OEM板的特点,解决了GPS三天线姿态测量算法、系统的重构技术和接收机的时间同步等问题。