【作者】 孙久军；

【导师】 綦星光；

【作者基本信息】 山东轻工业学院 ， 检测技术与自动化装置， 2007， 硕士

【摘要】 多分部传动在生产中应用非常广泛,如造纸、车辆、冶金等行业中均存在多分部传动。在多分部传动中,既需要对各个部分进行单独控制,又需要协调各个分部之间的运动。多分部传动向着大型化、高速化、精密化等方向发展,中间受如张力控制等多种约束条件。我国的尖端机器装备与发达国家相比仍有较大的差距。多分部传动的控制技术在机器装备工业中占有重要的地位,其技术水平严重制约我国机器装备向高、精、尖方向发展。因此积极研究多分部的控制策略具有重要意义。目前,对多分部传动控制策略的研究主要集中在控制理论和控制器件的制造及使用两个方面,而将有关多分部传动的控制理论应用于生产实践控的学术论文则鲜有报道。理论主要集中在人工智能控制、自适应控制、专家系统、随机控制等几个方面。工业现场实现方式主要有使用变频器、PLC、DCS等,还有一些企业自己开发的多分部传动控制系统。至今为止,把多分部传动的控制作为整体研究的报道为数不多。本文以造纸机为研究对象研究多分部传动的控制策略。在本文中简要介绍了造纸机整机的结构及运行特性,介绍了造纸机成形部和压榨部的结构、运行原理与特性并且简要介绍了造纸机的关键部件。简要介绍了多分部传动所涉及到的控制理论,详细论述了基于参考模型的自适应控制理论的原理与数学模型。基于雅普诺夫稳定理论和波波夫超稳定理论两种理论,设计参考模型自适应(MRAC)系统。本文论述了基于模糊参数自适应PID的纸张张力控制、自适应张力控制等几种有影响的多分部传动的张力控制方式。基于现场数据建立了造纸机速度控制时的数学模型,采用PID控制和参考模型自适应控制两种控制策略,并用计算机仿真程序Matlab仿真检验所提出控制策略的控制效果。通过对比发现,与传统PID相比,MRAC对被控对象参数发生变化有很强的适应能力。本文亦研究了多分部传动的张力控制及多分部传动控制两大类电气实现方式。本文为我国机器装备工业的进步做了有益的探索,为制约机器装备工业发展的主要因素提出了良好的解决方法。本文提出的控制策略和生产实践相结合,相信肯定能为装备工业的进步作出突出的贡献。更多还原

【Abstract】 The multi-partment driving is used very widely, such as paper making, vehicle, and metallurgy and so on, all of these fields use the multi-partment driving. In the multi-partment driving all the partment should be control singly, and yet the relation among partments should be harmonious. The multi-partment driving develop in following aspects large-scaled, high speed, and accurate, at the same time restricted by factors such as tension control. By now, in the equipment making fields, here are large differences between china and the developed countries. The control technique of multi-departments driving take the most important place in the equipment industry, and also is the main factor of the restraining the development of the equipment industry. So researching the controlling strategies of multi-partment driving is very significant. Now the researching on the controlling strategies of multi-partment driving is mainly concentrated on two fields which are the control theory and the control service. However, there little articles about which using the control theory control the apparatus. The control theory is mainly concentrate in such fields as artificial intelligence, adaptive control, expert system, random control and so on.. In the industrial production fields the apparatus mainly include Masters, PLC and DCS and also the control system made by themselves. By now, there are few articles which research the control of multi-department as whole.This article researches the controlling strategies of multi-partment driving about the paper machine. This article introduces the whole structure and the running character of the paper machine, introduces the structure, running theory, the character of the figuration department and the compressing department of the paper machine, also introduces the key components of the paper machine. In this article the controlling theories connected with the multi-department driving is introduced briefly, controlling theory and the mathematic modal about the adaptive control based on MRAC are discussed particularly. Two methods of design the MRAC systems based on the Lyapunov stable theory and Popov stable theory are discussed in this article. Kinds of influenced tensional control is discussed such as illegible parameter PID adaptive control and adaptive tensional control, count out the mathematic model of the speed control using the local data. Using the two control strategies PID control and the adaptive control basing MRAC, the control result is tested by the Matlab computer emulator program. We find that comparative with tradition PID MRAC has strong ability of adaptive parameter change. The electric realizing method about the multi-department and the tensional control is discussed in this article.This article does some useful researching job about the development of Chinese equipment industry, and gives some result about the main factor of restraining this fields. If connected the controlling strategies introduced by this article and product area, I believe that it could promote the developing of Chinese equipment industry.更多还原