摘要
给出了基于Laguerre函数的多变量自适应预测控制算法,并对控制算法中的Laguerre谱系数在线递推最小二乘辨识算法进行了改进,使得控制系统性能有明显改善。双容水箱液位控制系统的实验表明,改进的Laguerre函数自适应预测控制算法对扰动和对象参数、结构的变化、强耦合及非线性具有较强的适应能力。此外,该控制策略能有效地减缓系统振荡,有更高的控制精度和良好的控制品质。因此,改进的Laguerre自适应控制策略适合于复杂工业过程的控制,具有很好的推广应用价值。
The algorithm of the multi-variable adaptive predictive control strategy based on Laguerre model is introduced. Then the recursive least square algorithm of Laguerre spectral coefficients in the control strategy is amended as well. The control performance is greatly improved by this strategy. Experiment results on coupled tanks control system show that the improved algorithm has an outstanding adaptability for the system with disturbance, variable parameters, variable structure, severe coupling as well as nonlinearity. Moreover, this algorithm can reduce system vacillation and gain higher control precision than the former one, so excellent control performances can be gained by this algorithm.
出处
《控制工程》
CSCD
2004年第1期55-58,共4页
Control Engineering of China
基金
国家985高水平大学建设基金资助项目(KY2706)
中国科学技术大学青年基金资助项目(KB1025)
合肥市重点科研计划资助项目(合科2002 45)
