文章摘要
何德峰*,李海平*,王青松*,李廉明**.CFBB燃烧过程变经济性能多目标预测控制[J].高技术通讯(中文),2021,31(10):1108~1116
CFBB燃烧过程变经济性能多目标预测控制
Multi-objective predictive control of CFBB combustion processes with changing economic criterion
  
DOI:10.3772/j.issn.1002-0470.2021.10.012
中文关键词: 循环流化床锅炉(CFBB); 多目标控制; 模型预测控制(MPC); 变经济性能
英文关键词: circulation fluidized bed boiler(CFBB), multi-objective control, model predictive control(MPC), changing economic criterion
基金项目:
作者单位
何德峰*  
李海平*  
王青松*  
李廉明**  
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中文摘要:
      针对具有非线性、耦合和约束等复杂特性的循环流化床锅炉(CFBB)燃烧过程,考虑经济性能指标可变情况下其多目标优化控制问题,提出一种变经济性能多目标经济模型预测控制(MPC)策略。为了保证经济性能指标发生改变后CFBB燃烧过程在稳态工况下的稳定性和燃烧经济性,首先引入关于最优经济稳态点的正定辅助函数作为最高优先级目标,其次考虑床温设定值跟踪目标和经济性目标。进一步,应用广义终端约束、字典序多目标优化和滚动时域控制原理,设计CFBB燃烧过程变经济性能多目标经济预测控制器。最后,通过仿真验证了本文提出策略的可行性和有效性。
英文摘要:
      Aiming at the combustion process of circulation fluidized bed boiler (CFBB) with complex characteristics such as non-linear, multivariable coupling and constraints, considering its multi-objective optimization control problem with changing economic criterion, a multi-objective model predictive control (MPC) strategy with changing economic criterion is proposed. In order to ensure the stability of the CFBB combustion process under steady-state conditions and the economy of combustion after the economic performance criterion changes, the positive definite auxiliary functions at the optimal economic steady-state points are introduced and viewed as the highest priority goal, and then the set-points tracking target of the boiler bed temperature and the goal of combustion economy are considered. Furthermore, applying the generalized terminal constraints, lexicographic multi-objective optimization and predictive control principles, a multi-objective model predictive controller with changing economic performance is designed for CFBB system. Finally, the feasibility and effectiveness of the strategy proposed in this paper are verified by simulations.
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