期刊文献+
共找到4篇文章
< 1 >
每页显示 20 50 100
正则表达式在Ovation控制系统组态工程中的应用 被引量:2
1
作者 张雄 《计算机应用与软件》 CSCD 北大核心 2013年第3期323-326,共4页
Ovation控制系统组态工程涉及大量文本处理工作,如整理IO清单、点数据库组态、流程图画面组态、控制逻辑图组态等。组态人员经常要从多个不同类型的文件中提取各类信息或批量替换其中的字符串。常规的查找/替换方法只能根据确切的字符... Ovation控制系统组态工程涉及大量文本处理工作,如整理IO清单、点数据库组态、流程图画面组态、控制逻辑图组态等。组态人员经常要从多个不同类型的文件中提取各类信息或批量替换其中的字符串。常规的查找/替换方法只能根据确切的字符串进行简单的查找和替换,这种方法效率低、灵活性差,不适合进行复杂文本处理。正则表达式基于模式匹配法则对文本进行智能查找和替换,功能非常强大。把正则表达式引入Ovation控制系统组态工程,通过多个实例说明了正则表达式的具体应用,开发了基于COM接口,集成了各种正则表达式匹配模式的Excel插件,解决了组态工作中的各种文本处理问题,大大提高了控制系统组态工作效率和质量。 展开更多
关键词 OVATION 控制系统 正则表达式 点数据库 流程图画面 控制逻辑图
下载PDF
三菱M701F4燃机离线水洗自动控制研究及应用
2
作者 孙长春 《设备管理与维修》 2021年第23期34-38,共5页
针对目前三菱M701F4燃机离线水洗手动操作方式的不足,提出一种离线水洗自动控制模式,从总体控制布局到不同阶段对信号的处理及控制设计进行分析,并设计出了具体的控制逻辑图,同时对离线水洗工作进行详细介绍。
关键词 离线水洗 控制设计 控制逻辑图
下载PDF
Virtual Reality Simulation of Fuzzy-logic Control during Underwater Dynamic Positioning 被引量:4
3
作者 Midhin Das Thekkedan Cheng Siong Chin Wai Lok Woo 《Journal of Marine Science and Application》 CSCD 2015年第1期14-24,共11页
In this paper, graphical-user-interface (GUI) software for simulation and fuzzy-logic control of a remotely operated vehicle (ROV) using MATLABTM GUI Designing Environment is proposed. The proposed ROV's GUI plat... In this paper, graphical-user-interface (GUI) software for simulation and fuzzy-logic control of a remotely operated vehicle (ROV) using MATLABTM GUI Designing Environment is proposed. The proposed ROV's GUI platform allows the controller such as fuzzy-logic control systems design to be compared with other controllers such as proportional-integral-derivative (PID) and sliding-mode controller (SMC) systematically and interactively. External disturbance such as sea current can he added to improve the modelling in actual underwater environment. The simulated results showed the position responses of the fuzzy-logic control exhibit reasonable performance under the sea current disturbance. 展开更多
关键词 graphical-user-interface (GUI) fuzzy-logic control remotely operated vehicle (ROV) proportional-integral-derivative (PID) sliding-mode controller (SMC) underwater dynamic positioning
下载PDF
Systematic Logic Controller Design as Sequential Function Chart Starting from Informal Specifications
4
作者 Sven Lohmann Sebastian Engell 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2008年第1期43-47,共5页
Today's automation industry is driven by the need for an increased productivity, higher flexibility, and higher individuality, and characterized by tailor-made and more complex control solutions. In the processing in... Today's automation industry is driven by the need for an increased productivity, higher flexibility, and higher individuality, and characterized by tailor-made and more complex control solutions. In the processing industry, logic controller design is often a manual, experience-based, and thus an error-prone procedure. Typically, the specifications are given by a set of informal requirements and a technical flowchart and both are used to be directly translated into the control code. This paper proposes a method in which the control program is constructed as a sequential function chart (SFC) by transforming the requirements via clearly defined intermediate formats. For the purpose of analysis, the resulting SFC can be translated algorithmically into timed automata. A rigorous verification can be used to determine whether all specifications are satisfied if a formal model of the plant is available which is then composed with the automata model of the logic controller (LC). 展开更多
关键词 logic controller design systematic approach informal requirements VERIFICATION
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部