基于组态软件防误系统的设计与实现

针对电力防误系统的设计要求,在分析研究组态软件功能特点的基础上,提出了基于组态软件来实现防误系统的分布式应用。给出了防误系统的硬件设计图和在组态软件中进行防误系统的界面设计和PLC连接的方法,并重点介绍了ActiveX技术在组态软件中的使用方法,给出了防误系统运行时的系统构件结构图,利用ActiveX技术的优点,设计和实现了防误系统中的控制ActiveX控件。     

大型舰船综合减摇系统无模型自适应控制

针对减摇鳍单独控制,减摇水舱单独控制和鳍/被动水舱综合控制3种减摇系统设计了无模型自适应控制方案,并对相应的减摇效果进行仿真研究.仿真研究结果表明:大型舰船采用基于无模型自适应控制的鳍/被动水舱联合减摇方案,其工作性能好于单独使用减摇鳍或减摇水舱等减摇装置的性能,在各种航态下都能满足系统设计要求.另外,无模型自适应控制仅用系统I/O数据,不必事先建立系统精确的数学模型,可适应海况的变化,且参数调整少,计算量小,还能适应系统对快速性的要求.     

A zonal RANS-LES method to determine the flow over a high-lift configuration

High Reynolds number flows are particularly challenging problems for large-eddy simulations (LES) since small-scale structures in thin and often transitional boundary layers are to be resolved. The range of the turbulent scales is enormous, especially when high-lift configuration flows are considered. For this reason, the prediction of high Reynolds number flow over the entire airfoil using LES requires huge computer resources. To remedy this problem a zonal RANS-LES method for the flow over an airfoil in high-lift configuration at Re_c=1.0×10⁶ is presented. In a first step, a 2D RANS solution is sought, from which boundary conditions are formulated for an embedded LES domain, which comprises the flap and a sub-part of the main airfoil. The turbulent fluctuations in the boundary layers at the inflow region of the LES domain are generated by controlled forcing terms, which use the turbulent shear stress profiles obtained from the RANS solution. The comparison with an LES solution for the full domain and with experimental data shows likewise results for the velocity profiles and wall pressure distributions. The zonal RANS-LES method reduces the computational effort of a full domain LES by approx. 50%.     

计算机核心配置自动化系统设计与实现

计算机核心配置是提高上网计算机安全性的重要手段之一。从核心配置的概念及其基本方法出发,提出了基于客户端代理实现核心配置的自动化方法,研制了完整包含编辑、验证、分发执行和符合性监测等功能的自动化配置系统。该系统适用于各种机构保护上网计算机安全     

基于组态软件的生产线立体仓库监控系统设计

改造自动线上平面仓库为立体仓库,并使用西门子S7-200系列PLC与MCGS组态软件,设计出立体仓库控制与监控系统。设计内容包括立体仓库的PLC控制电路,程序,立体仓库的组态监控界面,动画效果,监控工程与PLC通信等。升级改造后的立体仓库单元,具有完善的控制与监控功能,较高运行可靠性和稳定性,同时大大提高了生产线的自动化程度和生产效率。     

基于组态软件的温度DDC系统设计与实现

以工控组态软件(MCGS) 的设备窗口实现对远程数据采集模块的驱动,完成工业现场数据的采集与控制命令的发布,运用RS485等串行口通讯协议实现计算机与外部设备之间的数据交换;以用户窗口编写了友好的用户界面及相应的控制算法,设计出具有工程应用价值的实时及历史报表,直观的实时曲线和历史曲线;以运行策略和实时数据库窗口完成系统运行的管理和对所有数据文件变量的管理与记录.试验结果表明基于组态软件设计的DDC系统具有良好的系统性能.     

基于组态王的农田温湿度监测系统设计

将组态王这一通用现场监控软件运用于农田环境监测系统,为环境监测提供了一个新的解决方案.系统采用模块化、层次化设计,下位机以单片机为核心,控制温湿度信号的采集,并通过RS-232将信号传送给上位机用于实时显示.仿真与实验证实,系统运行稳定可靠,信号采集精度高,完全达到了预期指标,具有广泛推广应用价值.     

基于PLC的无线配送系统的设计

提出了基于PLC、监控计算机、无线传输模块组成的无线配送系统,阐述了整个系统的组成,硬件的组态和软件的设计。并且对小车定位控制、无线通信做了详细的介绍。实际表明,该系统具有操作简便、运行稳定、可靠性高等特点。     

Semantic weaving of configuration fragments into a consistent system configuration

Configuration fragments developed separately and focusing on different aspects, such as availability, security or performance of a system need to be integrated into a consistent system configuration to avoid system malfunctions. The main challenges of such integration are due to the overlapping entities and the integration relations between the entities of the different configuration fragments. In this paper we propose a model based approach for a consistent integration of configuration fragments into a system configuration. We use and extend the model weaving technique to capture the semantics of the relations between the entities of the configuration fragments. Moreover, we generate automatically the constraints corresponding to these semantic relations to complete the target system configuration profile. These constraints can be used to guard the configuration consistency during runtime modifications.