基于小波函数的陶瓷烧成温度预测函数控制研究

摘要

针对陶瓷烧成生产过程的复杂性，提出一种基于小波函数的陶瓷烧成温度的预测函数控制方法。给出陶瓷烧成温度预测函数控制的基本原理；利用小波的多尺度分析和紧支局部特性，选取小波函数作为基函数，根据逼近要求灵活设置小波基函数的个数及位置分布，在保证系统整体优化性能的同时又兼顾了局部重点要求；理论分析和仿真表明，该控制方法与普通PFC方法相比，在动态特性、控制精度、抗干扰等方面具有明显的改善作用。%For ceramic firing the complexity of the production process, proposed a predictive functional control method based wavelet function to control firing temperature of the ceramic. Firstly, the basic principle of ceramic firing temperature predictive function control has been given. Then using wavelet multi-scale analysis and compact support local characteristics as a basis function of the selected wavelet function, according to the requirements of the approach requires flexibly set the number and location of distribution of wavelet basis function, in ensuring the overall optimal performance of the system while taking into account local key requirements. Theoretical analysis and simulation show that compared with the general method of PFC, the dynamic characteristics and control accuracy, anti-interference etc of this control method have obviously improved.