基于改进PID算法的小区域温度控制模型仿真  

The Small Area Temperature Control Model Based on Improved PID Algorithm Simulation

作　　者：蔡金萍[1] 李莉[1] 

机构地区：[1]武汉理工大学华夏学院,湖北武汉430223

出　　处：《计算机仿真》2015年第6期237-240,共4页Computer Simulation

摘　　要：采用传统方法进行小区域温度控制,由于温度具有时变性、非线性、多变量耦合性的特点,温度控制系统的检测滞后于温度调控,容易引起整个温控系统的温度过调、温度的振荡以及温度控制器的参数变化。提出基于改进PID算法的小区域温度控制方法。针对由控制系统的制动、启动产生的尖峰脉冲扰动,以及环境本身的噪声,采用一阶滤波处理方法进行去噪处理,根据积分变速与积分分离相融合理论,对控制系统的积分项进行变速或分离处理,最大化保证控制的精度与稳定性,实现对小区域温度的有效控制。实验结果表明,采用改进算法进行小区域温度控制,能够有效的提高控制系统的稳定性与控制的精准度,满足小区域温度调节的实际需求。Because the temperature is time- varying, nonlinear and multivariable coupling, traditional tempera- ture control methods will lead the temperature control system to over adjustment, temperature oscillation and parame- ter changes of the temperature controller. This paper proposes a small regional temperature control method based on improved PID algorithm. For the spike pulse disturbance generated by braking and starting of the control system and the noise of the environments, a first - order filter processing method is presented to deal with the noise. According to the fusion theory of integral variable speed and integral separation, the integral item in the temperature control system is processed by variable speed or separation to maximize the .control precision and stability, and realize the effective temperature control of small region. The experimental results show that the improved algorithm can effectively improve the stability of the control system and control accuracy, and meet the practical requirements of small regional temper- ature control.

关 键 词：温度控制 积分变速算法 积分分离算法 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]