应用自适应模糊-PI复合算法的塑料薄膜厚度控制研究  

Research on Thickness Control of Plastic Film by Adaptive Fuzzy-PI Algorithm

作　　者：谭顺学[1] 何冬康 蒙坚[1] TAN Shun-xue;HE Dong-kang;MENG Jian(Liuzhou Vocational and Technical College,Liuzhou 545000,China)

机构地区：[1]柳州职业技术学院,广西柳州545000

出　　处：《塑料科技》2020年第10期109-111,共3页Plastics Science and Technology

基　　金：广西壮族自治区教育厅科研项目“六自由度工业机器人运动学算法的研究与应用”(2018KY0986)。

摘　　要：塑料挤出机工业系统中塑料薄膜厚度存在非线性及时变性问题,对塑料产品质量造成很大影响。针对这一问题,引入了模糊-PI复合控制算法解决塑料薄膜厚度的复杂系统控制。为了增加控制器的自适应性,加入自适应因子构成自适应模糊-PI复合控制。仿真实验与传统PID控制器对比结果表明:相比于传统PID控制器,自适应模糊-PI控制器产生更小的超调量及更快的系统响应速度;且当控制器达到稳定后,自适应模糊-PI控制器产生的平均绝对误差远小于传统PID控制器,具有更高的薄膜厚度控制精度。The plastic film thickness in the plastic extruder industrial system has the problem of nonlinear and timely degeneration,which has a great impact on the quality of plastic products.To solve this problem,the fuzzy-PI compound control algorithm is introduced to solve the complex system control of the thickness of the plastic film.In order to increase the adaptability of the controller,an adaptive factor is added to form an adaptive fuzzy-PI compound control.The effectiveness of the proposed scheme is compared with the traditional PID controller through simulation experiments.The results show that,compared with the traditional PID controller,the adaptive fuzzy-PI controller produces a smaller overshoot and a faster system response speed.And when the controller is stable,the average absolute error generated by the adaptive fuzzy-PI controller is much smaller than that of the traditional PID controller,and it has higher film thickness control accuracy.

关 键 词：塑料薄膜 厚度控制 模糊-PI 自适应控制 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术]