虚拟控制技术应用的深入研究 毕业设计论文.doc

摘 要本论文通过对虚拟控制技术应用的深入研究，提出了一种基于通用控制平台的虚拟控制对象设计并对通用控制平台硬件配置和控制对象的实现方法进行了全面的设计本论文对通用控制平台硬件电路的各功能模块进行了设计，各模块主要从指标、结构组成、原理设计等几个部分展开根据实际控制对象的信号特点以及实验仿真的需要，运用模拟电子技术、数字电子技术和单片机接口技术等知识，设计了模拟量输入模块、模拟量输出模块、数字量输入模块、数字量输出模块、通信模块、人机接口模块、电源模块等基于硬件平台，选取了电子钟以及储液罐监控系统作为典型控制对象进行了仿真为了在设计的硬件平台上进行实验室仿真其控制过程，设计了控制器、控制对象和计算机组成为一套完整的仿真系统通过 Modbus 协议，实现与上位机的通信，通过 VB 与组态的 DDE 连接将被控对象的仿真结果以动画的形式显示出来通过对基于通用控制平台的虚拟控制对象设计，能够方便的仿真出多种实际的控制对象的工作过程，历史曲线等，不用采取复杂的物理模型，不用进入到设备现场即可完成对这些典型控制对象的工作原理和工作过程的认识关键词：通用控制平台 控制对象仿真 硬件电路 电子钟 储液罐..ABSTRACTThis paper based on virtual control technology applied research, put forward a kind of universal control platform based on virtual control object design.And the universal control platform hardware configuration and control object of the realization methods of the comprehensive design.This paper gives the platform from overall design scheme, and expounds scheme formation from control engineering simulation angle. The platform hardware circuit modules are designed in the paper and roughly every module is designed from main indexs, structures,design principles and other several aspects. On the basis of fully understanding signal features of processing control occasions, simulation and measurement needs, using analog electronic technology, digital electronic technology and single-chip microcomputer interface technology and other knowledge, and design all kinds of circuit parts,for example, multi-channel analog input module, multi-channel analog output module, multi-channel digital input module, multi-channel digital output module,,multi-type communication module, man-machine interface module, power module and so on.Based on the hardware platform, selecting the electronic clock and reservoir supervisory control system as a typical control object to simulate. The paper summarizes the composition structure and control elements. In order to simulate the control process on hardware platform in laboratory, designing the controller, the control object and computer to constitute a complete set of simulation system,carries out research of the simulation algorithm and control algorithm, and development of application simulation software.Based on the universal control platform based on virtual object of control design, convenient to be able to simulate a variety of real control objects in the working process, the historical curve etc.., need not take complex physical models, without access to the facilities can be finished on site for the typical ..control object of the working principle and process of cognition. Keywords: universal control platform, control object simulation, hardware circuit design, electronic clock, reservoir..目录1 绪论 ...............................................11.1 课题研究的背景及意义 ......................................11.2 国内外研究动态 ............................................21.3 课题设计目标 ..............................................41.4 课题设计内容 ..............................................41.5 课题设计的特色与优势 ......................................52 通用控制平台设计方案 ...............................62.1 方案选择 ..................................................62.2 总体设计方案 ..............................................62.3 硬件电路设计方案 ..........................................92.4 控制对象实现过程 .........................................133 平台硬件功能模块设计 ..............................153.1 模拟量输入模块 ...........................................153.2 模拟量输出模块 ...........................................183.3 开关 量输入模块 ...........................................213.4 开关量输出模块 ...........................................243.5 人机接口模块 .............................................263.6 RS-485 通信模块 ..........................................303.7 供电电源模块 .............................................314 控制对象仿真之电子钟 ..............................354.1 虚拟电子钟系统概述 .......................................35..4.2 电子钟被控对象设计 .......................................364.3 电子钟控制器设计 .........................................424.4 电子钟仿真结果 ...........................................515 控制对象仿真之储液罐监控系统 ......................555.1 储液罐监控系统概述 .......................................555.2 储液罐监控系统被控对象设计 ...............................565.3 储液罐监控系统控制器设计 .................................605.4 储液罐监控系统仿真结果 ...................................656 系统性能的改善与提高 ..............................697 总结 ..............................................70参考文献 .............................................71致谢 .................................................73附录 .................................................74附录 1 外文文献 .............................................74附录 2 文献翻译 .............................................80附录 3 毕业设计总原理图 .....................................86..1 绪论1.1 课题研究的背景及意义1.1.1 研究背景虚拟控制技术是设计制造领域的一种高新技术。

传统新产品的设计需要经历“概念设计-物理实验-重新设计与完善”这样反复的设计流程，最终才进行实际的投产，设计周期长，投入人力物力成本大，已经不适应于当前激烈的竞争采用虚拟控制技术，可以结合用户需求，用最短时间开发出用户接受的产品虚拟控制最初应用于军事、制造等行业，目前已广泛渗透于它可应用于建模与仿真、教育与训练、科学计算可视化、设计与规划等多个方面目前，国内多所高校及企业单位相继开展了电气信息类实验教学装置的研究 [1-5]，取得了一定的成果。