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中文摘要：
针对锅炉中主蒸汽温度控制系统中具有的非线性、参数时变性和系统大滞后等问题,对非线性系统数学模型的建立、目标值—电力负荷需求信号的跟踪控制、外界干扰的消除等方面进行了研究,对发电系统响应负荷变化的实时跟踪控制策略进行了归纳,在目前普遍采用的锅炉汽轮机协调控制方式的基础上,运用非线性离散控制方法对锅炉主蒸汽温度进行了建模,提出了一种基于非线性离散控制方法的锅炉主蒸汽温度控制系统。并在Matlab 10.0.1中进行了实例仿真,通过仿真实例验证了所提控制方式的正确性和可行性。研究结果表明,采用非线性离散控制法的锅炉主蒸汽温度控制系统在目标值跟踪、抗干扰以及减少延时带来的误差等方面较传统方法具有显著的优势,对发电设备的控制系统具有重要的指导意义。
英文摘要：
Aiming at the problems of nonlinearity,time varying and lagging with the main steam temperature control system of boiler,the establishment of the mathematical model for nonlinear system,the tracking control of target-power load demand signal,elimination of interference and so on were studied,and real-time tracking control of power system response load change strategy was carried on the induction,and now on the basis of boiler turbine coordinated control which widely used in the current way. Nonlinear discrete control method was used to modeling for boiler main steam temperature,so a control method of boiler main steam temperature control system based on nonlinear discrete was put forward. The results indicate that the boiler main steam temperature control system which has used nonlinear discrete control method has significant advantages than the traditional methods in the target tracking,anti-disturbance and reduction in errors caused by delay,has an important guiding significance for the control system of power generation equipment.
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