摘要
从数学上建立了预测控制与PID控制的广义联系,并结合某火电厂300MW锅炉机组,针对烟气氧含量控制回路,在不改变原有控制系统框架的基础上,采用基于GPC的PID控制方法,很好地解决了在锅炉负荷和氧含量设定值同时变化的情况下系统的动态响应不理想的问题。通过MATLAB仿真,验证了该控制系统具有较好的控制品质,适合具有一定延迟的复杂控制系统。
A general relationship between model predictive control and PID control is established mathematically. Combining with a 300 MW thermal power plant boiler unit and aiming at the oxygen content control loop, a GPC-based PID control method without changing the original control system framework is adopted to solve the problem that the dynamic response of the system is not so ideal when the boiler load and oxygen content setting change simultaneously. The simulations in MATLAB show that the proposed control system has better control performance, and is suitable for the complex control system with certain delay.
出处
《电子技术(上海)》
2009年第9期22-24,共3页
Electronic Technology
关键词
预测控制
广义预测控制
自适应
比例积分微分控制器
烟气氧含量
Model predictive control (MPC)
generalized predictive control (GPC)
adaptive
PID control
oxygen content in smoke