【作者】 杨杨；

【导师】 曹跃进； 宋连庆；

【作者基本信息】 西安工程大学 ， 控制工程， 2012， 硕士

【摘要】 随着电气传动技术的发展、工业自动化程度的逐步提高及生产规模的持续扩大，传统的单一电机驱动系统已很难满足现代化大规模生产的需求，大多生产系统需要采用多电机同步驱动控制方法来实现。目前，这种方法在很多领域中已经被广泛应用，如镀锌酸洗线、彩涂生产线、印刷生产线、连续拉弯矫直机生产线等。在这些生产线中，多台电机之间的同步性能越来越重要，它的好坏直接影响了系统运行的稳定性及产品质量。因此，为了提高生产效率、成材率及产品质量，许多学者已经对多电机同步控制的问题在进行研究，本课题便是以某公司的连续拉弯矫直机项目为背景，来研究多电机之间的同步驱动控制问题。首先本文在分析连续拉弯矫直机组工艺流程及其特点的基础上，并根据该机组对控制精度及稳定性的要求，采用了基于模糊PID控制算法的多电机并行-耦合控制策略。本项目中主传动部分由十四台电机组成，本文只针对该项目中的一个张力辊组的四台电机进行研究。该机组使用的是直流传动系统，文中分析了直流电机的工作原理及调速原理，同时深入研究了模糊PID控制算法，并将此算法应用在多电机的并行-耦合控制策略当中，最后通过MATLAB仿真软件对该控制策略进行仿真研究。仿真结果表明该策略比纯PID控制方法更优越，它改善了系统的动态响应性能，提高了系统的控制精度，验证了该控制策略的有效性。其次，经过上述的工艺流程特点及控制策略的研究之后，文中确立了该多电机同步驱动控制系统的总体设计方案。该多电机同步驱动控制系统的设计分为硬件设计和软件设计，其中硬件部分包括PLC(Programmable Logic Controller)控制器、调速装置、通信装置等，软件部分包括多电机同步控制系统的相关子程序及上位机画面的编程等。文中详细介绍了其硬件设计部分主要组成单元的工作原理及各子程序功能块的软件设计流程。最后，该项目在宁波市某合金板带有限公司的现场进行生产调试，最终的调试结果使整个机组运行更加稳定，同时提高了多电机之间的控制精度和动态响应性能，改善了多电机的同步性能。该技术的改进在连续拉弯矫直机等生产线中应用非常广泛，它对板带材等产品质量的提高具有很大的现实意义。更多还原

【Abstract】 With the development of electric drive technology, industrial automation degreegradually increase and the continued expansion of production scale, the drive system of thetraditional single-motor has been difficult to meet the needs of modern large-scale production,most of the production system need to adopt a multi-motor synchronous drive control methodachieve. In many areas, this approach has been widely used, such as galvanizing and picklingline, color coating production line, printing production lines, continuous bending andstraightening machine production line. Synchronization performance between multiple motorsbecome more and more important in these production lines, and its direct impact on thesystem stability and product quality. Therefore, in order to improve production efficiency,yield and quality of products, many scholars has been the problem of multi-motorsynchronous control in the study, the subject is to a company of continuous bending andstraightening machine project as the background, to study the multi-motor the synchronizationbetween the drive control problems.Firstly this article on the basis of analysis the process and characteristics of thecontinuous bending and straightening unit, and according to the unit on the control precisionand stability requirements, adopt the multi-motor parallel-coupling control strategy based onthe fuzzy PID control algorithm. This project main drive part is composed of fourteen motors,this paper only for the project in a tension roll group of the four motors research. The crewused a DC transmission system, this article analyzes the working principle of DC motor andspeed control principle, in addition, in-depth study of the fuzzy PID control algorithm, andthis algorithm is applied in the multi-motor parallel-coupling control strategy, which lastthrough MATLAB simulation software simulation of the control strategy. Simulation resultsshow that the strategy is superior than pure PID control method, which improves theperformance of the dynamic response of the system, improves the control precision, to verifythe effectiveness of the control strategy.Secondly, after the process characteristics and control strategies, the paper establishes themulti motor synchronous drive control system design. The multi motor synchronous drivecontrol system design make up of the hardware design and the software design, the hardwarepart includes PLC (Programmable Logic Controller) controller, control device, communication device, the software part on multi-motor synchronous control system relatedprogram function block and PC screen programming. This paper detailedly introduces theworking principle of the main components of the hardware design and function of eachsubroutine block software design flow.Finally, the project in some alloy plate company of Ningbo city on-site productiondebugging, the final debugging results so that the entire operation of unit is more stable, whileimproving the multi-motor control accuracy and dynamic response performance, improvedmulti-motor synchronous performance. Improvements of the technology in the continuousbending and straightening machine production line is widely used, it has great practicalsignificance of the improvement of the quality of products such as plate and strip.更多还原