PLC控制系统的设计和优化方案

Design and Optimization of PLC Control System

传统控制系统只是针对某一特殊工业化需求进行专门设计,设计时一般只考虑满足设计技术指标的要求,因此还存在通用性差、维护修改困难等缺点。传统控制系统难以实现简单修改后的直接应用,其可移植性和通用性差的弊端在日益激烈的科研和生产竞争中也越加显现。因此,提高控制系统的可移植性、通用性和扩展性,即使其具备良好的"柔性",对于缩短工业装置研制周期和调试费用、提高运行可靠性和适应性都具有重要意义。PLC控制系统是就是在这一背景下产生和发展起来的,而且应用领域越来越广泛。

Traditional control system is only designed for a particular industrial demand, if the design of technical indexes meets the design requirements is considered when we are designing it. So there are many shortcomings, such as poor universality maintenance, modification difficulties and so on. It is difficult for the traditional control system to implement a simple modified application directly, the disadvantages of poor portability and versatility in the increasingly fierce competition in the scientific research and production are also raising. As a result, improving the portability of the control system of versatility and expansibility, that is to make it have great ＂flexible＂. It is meaningful for shortening the period of industrial equipment and commissioning cost, improving the operation reliability and adaptability. PLC control-system is produced and developed under this background and it is becoming more and more widely used.