Constrained Dynamic Matrix Control for a Boiler-Turbine Unit
Constrained Dynamic Matrix Control for a Boiler-Turbine Unit
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锅炉汽轮机组的约束动态矩阵控制
DOI：
10.1109/icmlc.2006.258396
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
Ji
中科院分区：
文献类型：
--
作者：
Zhijun Li;Zheng;W. Tan;Ji
机组是典型的多输入多输出（MIMO）工业控制系统，具有非线性和耦合特性。针对具有硬输入约束的非线性多变量锅炉-汽轮机组，设计了一种约束动态矩阵控制（DMC）算法。针对单输入单输出（SISO）集成过程，提出了一种基于阶跃响应模型的改进无约束DMC算法。结果表明，该算法比传统的DMC更有效，也可以推广到具有集成子系统和输入/输出约束的MIMO系统。提出了一个1-范数的目标函数，并利用线性规划在线获得控制器的控制作用。仿真结果表明，在控制量满足约束条件的情况下，所设计的控制系统具有良好的跟踪性能和抗干扰能力，无稳态偏移
A boiler-turbine unit is a typical multi-input multi-output (MIMO) industrial control system in power plant, which has nonlinear and couple characteristics. In this paper, a constrained dynamic matrix control (DMC) algorithm is designed for a nonlinear multivariable boiler-turbine unit with hard input constraints. Firstly an improved unconstrained DMC algorithm based on step response model for a single-input single-output (SISO) integrating process is proposed. It is shown that the proposed algorithm is more effective than conventional DMC and can also be extended to MIMO systems with integrating subsystems and input/output constraints. A 1-norm objective function is presented and the control actions can be obtained using linear programming online. Simulation results show that the designed control system has good tracking property and disturbance rejection ability without steady state offset while the control actions satisfy the constraints