酒钢不锈钢厂热轧层流冷却控制系统研究

酒钢不锈钢厂热轧层流冷却控制系统研究与应用
            为了克服由于控制设备导致的纯滞后 ，本文提出一种 Fuzzy—smith复合控制方案 ，对精冷区进行控制 。该方法兼顾 了Smith控制和模糊控制的优点 ，既能地大滞后 的影响，又对被控对象参数的变化有较强的适应能力 ，且实现简单 ，性好 。模糊 Smith预估控制框 图如图 5所示 。
图 5 模 糊 预 估 反馈 控 制以卷取温度作为模糊控制器的语言变量 ，取其偏差e和偏差变化律 de／dt作为控制器的输入量 ，输出量为温度偏差的调节量 。模糊控制器采用加权平均法对输 出的模糊子集进行清晰化。
自适应控制 
           近几十年 以来 ，自适应控制技术的应用取得了惊人的进展 ，特别是利用 自适应控制技术建立的模型具有 的适应能力 ，可以对不确定的复杂过程进行控制 ，减小由不确定因素产生的偏差。层流冷却 自动控制系统就采用 了自适应控制 ，建立了温降 自适应模型 ，通过模型的长期 自适应和短期 自适应来提高卷取温度 的精度。
Jisco stainless steel rolling laminar cooling control system research and application In order to overcome the due to control equipment of pure time-delay, this paper
A Fuzzy control scheme -- Smith compound in cold area
System. This method of give attention to two or morethings Smith control and fuzzy control, both advantages
Can effectively restrain the lag of the influence and control parameters
Change has strong adaptability and implementation is simple and good reliability. mould
Paste Smith prediction control box figure as shown in figure 5.
Figure 5 mould paste guesstimation feedback control system
With coiling temperature as fuzzy controller, the language of variables
Deviation e and bias change law of a controller DE/dt input, lose
The amount of adjustment for temperature deviation. Using the weighted fuzzy controller
Average method to lose out on the fuzzy subsets specified approach.
2.4.3 adaptive control
In recent decades, adaptive control technology application made
Amazing progress, especially the adaptive control technology of mould
Type has a strong ability to adapt to the complex process of uncertainty
Precise control of uncertain factors, reduce the error. laminar
Automatic control system adopts the adaptive control, temperature
Drop adaptive model, through the model adaptive and short-term since
Should be to improve the accuracy of coiling temperature.