当时间变化,自从开火煤的锅炉的燃烧系统,尽最大努力,植物被描绘,强烈联合了,并且非线性,它是难的由常规比例的不可分的衍生物(PID ) 完成令人满意的表演控制计划。尽最大努力为主要蒸气压力的特征种锅炉,与史密斯一起的滑动模式控制系统预兆的结构被建议寻找性能和坚韧性改进。首先,内部模型控制(IMC ) 和史密斯预言者(SP ) 被用来处理时间延期,和滑动模式控制器(SMCr ) 被设计克服模型失配。模拟结果与常规的相比显示出建议控制器的有效性。
Since the combustion system of coal-fired boiler in thermal power plant is characterized as time varying, strongly coupled, and nonlinear, it is hard to achieve a satisfactory performance by the conventional proportional integral derivative (PID) control scheme. For the characteristics of the main steam pressure in coal-fired power plant boiler, the sliding mode control system with Smith predictive structure is proposed to look for performance and robustness improvement. First, internal model control (IMC) and Smith predictor (SP) is used to deal with the time delay, and sliding mode controller (SMCr) is designed to overcome the model mismatch. Simulation results show the effectiveness of the proposed controller compared with conventional ones.