小波基预测函数控制在陶瓷烧成温度控制中的应用

针对陶瓷烧成窑炉具有大纯滞后、非线性及不确定性等特点,提出一种基于小波基函数的陶瓷烧成温度的预测函数控制方法,推断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满足了局部重点要求;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促进作用。

Application of Wavelets Predictive Function Control in Temperature Control of Ceramic Firing

For ceramic firing kiln with large delay,nonlinear and uncertain characteristics,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 sup-port 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 per-formance 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 has obviously improved.