基于Chebyshev正交多项式预测的模糊控制方法

Fuzzy control based on Chebyshev orthogonal polynomial prediction

利用chebyshev正交多项式在数值方面最佳一致逼近的特性,结合对被控系统输出数据的信息,经过特征提取,构造chebyshev基函数,建立系统的输出预测模型,作为模糊控制的附加决策项.因此它满足了具有时滞特性、模型难以建立的工业加热炉对象温度控制的要求,使系统达到较高的性能指标.

By extracting the output data of the controlled system and making use of the optimal consistency approach of Chebyshev orthogonal polynomial in dealing with data, the base function of system's output predictive model is derived. such predictive output acts as additional decision to fuzzy control. Therefore, it can meet the control demands for such industrial objects as furnace with timedelay,fencperature confrol and difficulty in model making so that a higher index of property can be attained.