用预报误差校正的锅炉燃烧系统预测控制研究  

A Study of the Predictive Control of a Boiler Combustion System through the Correction of a Forecast Error

作　　者：朱学莉[1] 齐维贵[1] 李丽艳[1] 

机构地区：[1]哈尔滨工业大学电气工程与自动化学院,黑龙江哈尔滨150001

出　　处：《热能动力工程》2002年第6期618-621,共4页Journal of Engineering for Thermal Energy and Power

摘　　要：为了改善锅炉燃烧控制系统的性能,提出用预报误差校正的动态矩阵控制(DMC)算法对其施加控制。文中在介绍DMC的组成和内模控制结构后,基于时间序列分析、参数估计和最优预报原理,对模型误差进行预报,并利用模型预报误差代替模型误差,对预测控制的滚动优化进行校正。最后,通过锅炉燃烧系统的预测控制仿真实验证明,预报误差校正较之一般的误差校正算法在跟踪、抗扰和鲁棒性等方面均有明显的改善。To improve the performance of a boiler-combustion control system, a dynamic matrix control (DMC) - based algorithm with the correction of a forecast error has been put forward to fulfill relevant control functions. After a brief description of the DMC composition and an internal-model control structure a model error is predicted based on a time sequence analysis, parameter estimation and an optimum forecast theory. Furthermore, by forecasting the model error and using the model forecast error to replace the model error the rolling optimization of a predictive control can be duly corrected. Finally, through the simulation tests of the predictive control for the boiler control system it is shown that the correction of the forecast error can result in a marked improvement in such characteristics as tracking ability, anti-interference and robustness when compared with an error correction algorithm in general.

关 键 词：预报误差 锅炉 燃烧系统 预测控制 动态矩阵 时间序列 

分 类 号：TK223.2[动力工程及工程热物理—动力机械及工程]