中文摘要：

PID调节器具有结构简单、适应性强、不依赖于被控对象的精确模型、鲁棒性较强等优点。控制器的性能直接关系到生产过程的平稳高效运行以及产品的最终质量。针对一类可用带有纯时间延迟的一阶对象来近似描述的工业过程,本文通过对工业过程现场采集的数据,利用Levenberg-Marquardt最小二乘拟合法辨识出被控对象的数学模型,进而根据典型PID控制器的参数整定方法求出PID控制器的参数。通过对一个典型工业对象的仿真研究,结果表明所提出的方法简单有效。

英文摘要：

The PID controller has merits of simple structure,strong compatibility,independence of precise models,and strong robustness.The performance of controllers can directly affect not only the smooth and efficient operation of a production process but also the final product quality.A class of industrial processes that can be described approximately by a first-order plus time delay model is investigated in this paper.The mathematical model is identified first by the Levenberg-Marquardt least square fitting method with data collected in the industrial process,and then the PID controller parameters are obtained in terms of several typical PID tuning methods.Finally,a PID controller is designed.The experimental results of a typical industrial processes show that the proposed method is both simple and effective.