With the rapid development of computer network technology , control systems and control technology trend to open , intelligent and networked . at present , the remote control network , which integrates fieldbus and internet , becomes an important scheme in remote control 随着计算机网络技术的迅速发展与广泛应用,控制系统及控制技术逐渐向开放性、智能化、网络化方向发展,结合现场总线和internet网络的远程控制网络技术成为一种重要的控制系统实现方案。
This paper studies ccfw . it has design main axis system , carriage system and control system in concept and in general based in compute control filament winding machine ' s constitutes and structures , giving two project of hardware of control system , and set forth relative software 在介绍微机控制缠绕机( ccfw )的组成结构基础上,对主轴系统、小车系统、控制系统进行了概念设计、总体设计,给出了控制系统硬件设计的两种方案,对其软件部分也作了相应的阐述。
Compared with traditional vod system , service on - demand is pushed toward the end of network , which can decrease demand of main network bandwidth when the system needs to cover the some large areas ; meanwhile , it is benefit to expansion of the system and control of programs 当系统覆盖地域较大时,这种方式可以有效地降低系统对主干网络带宽的需求,同时也利于系统的扩展和节目管理。本文针对vod系统中视频服务器的瓶颈问题,提出了视频服务器负载均衡的方法。
Since delays are often encountered in engineering systems , ecology systems , electricity systems , management systems and control systems such as the turbojet engine , microwave oscillator , nuclear reactor , controlability of systems and optimal control , etc . the phenomena of delays are investigated by more and more scientists 在工业工程、生态系统、电力系统、管理系统、控制系统等实际系统中常常遇到很多时滞问题,如涡轮喷气发动机、微波振子、核反应、系统的可控性和最优控制等问题,所以时滞现象越来越受到众多科学家的广泛关注。
The author analyzed and researched temperature controller with pure delay time and great inertia , and also analyzed and researched that how to make certain the parameter of temperature controller . after analyzing plc controlling system and controlling program , the author continued to analyzing feature and application of ac inverter , and giving a judgment of the controlling system in the end 同时,本文还主要研究大惯性、大滞后温度控制系统的控制及其参数整定;分析plc的控制回路及控制程序;分析交流变频调速器的特性及其应用;并对整个系统的改造进行分析、评价
Aiming at drawbacks that environment simulate test laboratory ( estl ) ' s control precision is being dropped , the system digital simulation , the system characteristic analysis is proceeded ; basing on it , intelligence pid control processor , integral desaturation pid control processor , leading adjust control processor ( leading adjust of point of inflection of curve ) is planned , double loop control processors of low temperature system is consummated , so , the new control scheme and control program is formulated ; moreover through control program " simulate debugging and environment simulate test , 18 experimental curves and 19 experimental items is fulfilled totally . it proved that estl ' s control system and control program are successful . experimental result makes it known that the new control plan solves the problem of low control precision 本论文针对环模室原控制系统存在的控制精度下降等问题,进行了系统仿真及环境模拟系统特性分析,在此基础上,设计了智能pid控制器、抗积分饱和的控制器、预估补偿控制器、完善了低温系统的双回路控制,制定了新的控制方案和控制程序组态,并对其控制程序进行模拟调试及结合实际试验对其控制系统进行验证;共计完成了18条曲线, 19个项目的试验,对其控制系统及控制程序进行了充分的考验。
In allusion to the demand of the embedded system and control network technology fastly developed , this topic introduces a design project of a network intelligent controller , which is based on mcf5272 microprocessor . this controller , cored with improved embedded uclinux operation system , merging large of new modularized integrated technology in embedded field , has excellent operability and expandability 针对当前嵌入式系统和控制网络技术的飞速发展的要求,本课题介绍了一种基于mcf5272的嵌入式网络控制器的设计方案。控制器以优化改进的嵌入式uclinux操作系统为核心,结合大量模块化集成的嵌入式领域新技术,具有良好的开放型、可扩充性;通过集成profibus - dp和以太网接口,能够实现现场和网络混合测控。
Through analyzing and comparing , the results are presented below : that applying light structure design and selecting larger elasticity coefficient linear motor can improve greatly displacement output dynamic capability of positioning system and controlling precision of position motion , and this is helpful to meet the demand of increase productivity 分析比较仿真试验曲线可知:采用结构轻量化设计、选用较大弹性系数的直线电机等可以大幅度改善定位系统的位移输出动态性能,提高定应运动的控制精度,并有利于满足设备高生产率的需求。
After identity the risk that the enterprises faces , then evaluate the auditing risks of enterprises , at first , we research the method of risk assess , then , design a index system to assess the audit risk , the index system contain business risk index system and control risk index system , while designing these indexes , should according the reason that bring risk or other relevance factor . when design the index system we should research their feasibility too 识别出所面临的风险后,下一步就是对风险进行评估,在评估过程中,首先设计一个审计风险评估指标体系,具体包括企业经营风险评估指标体系和控制风险评估指标体系,在设计这些指标时,应按审计风险生成的原因或者与审计风险生成相关性较大的因素来进行设计,设计出审计风险评估指标体系的同时也研究其可行性。
The immigration department won five awards , including the top service enhancement award large department ; the smart identity card sub - division was named champion in the team award on front - line counter service ; the smart identity card system and control point system won the champion and merit award respectively in the team award on innovation application of technology 入境事务处在公务员优质服务奖励计划中勇夺五项殊荣,当中包括“部门精进服务奖” (大部门组别)的冠军,而智能身份证分科则获“前线柜位服务”队伍奖第一名。智能身份证系统及口岸管理系统分别获“创新及科技应用”队伍奖的冠军及优异奖。
GCSE Systems and control is a General Certificate of Secondary Education run by the AQA (Assessment and Qualifications Alliance) in the United Kingdom.