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燃料-汽压系统锅炉蒸汽压力动态面控制

, PP. 103-108

Keywords: 锅炉,燃料-汽压系统,观测器,动态面控制,低通滤波器,稳定性分析

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Abstract:

锅炉蒸汽压力是表征锅炉运行状态的重要参数。针对燃料–汽压系统,提出一种新颖的动态面控制方法,控制系统中只采用了锅炉蒸汽压力信号。将拟合得到的燃料-汽压对象的数学模型转化为状态方程;采用锅炉蒸汽压力信号构造状态观测器对状态进行估计;利用动态面控制方法设计控制器,由于引入一阶低通滤波器,动态面控制克服了传统反演方法的“微分爆炸”现象;通过Lyapunov稳定性分析方法证明闭环系统的信号半全局一致有界,并且跟踪误差可以通过调节控制参数达到任意小。仿真结果表明锅炉蒸汽压力能够较快跟踪给定信号,证明了该控制方法的有效性。

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