CAJ | 학술논문

Alstom能源技术中心给出了气化炉在全工况下的Matlab非线性模型。为了解决Alstom气化炉非线性、强耦合以及大惯性特点所带来的控制问题,设计了一种模型预测控制器。首先在局部工况点建立离线线性模型,在所建模型基础上设计控制器,应用灰色理论GM(1,1)在误差校正环节预测未来时刻由于模型不匹配产生的误差,以此来提高控制器输出的精度。仿真结果表明,在压力扰动测试中,即使各控制量受到严格的约束,各输出量的偏差仍能维持在规定的范围内,满足了Alstom气化炉的控制要求。
Alstom능원기술중심급출료기화로재전공황하적Matlab비선성모형。위료해결Alstom기화로비선성、강우합이급대관성특점소대래적공제문제,설계료일충모형예측공제기。수선재국부공황점건립리선선성모형,재소건모형기출상설계공제기,응용회색이론GM(1,1)재오차교정배절예측미래시각유우모형불필배산생적오차,이차래제고공제기수출적정도。방진결과표명,재압력우동측시중,즉사각공제량수도엄격적약속,각수출량적편차잉능유지재규정적범위내,만족료Alstom기화로적공제요구。
Alstom Energy Technology Center has given the Matlab nonlinear model for gasifier under full operating condition. In order to solve the control problem caused by the non-linearity, tight coupling and large inertia of the gasifier from Alstom, the model predictive controller has been designed. Firstly, the off line linear model is set up under some of the local operating conditions, then on the basis of the model established, the controller is designed. By adopting grey theory GM(1,1), in the error correction stage, the error that generated due to model mismatch in future is predicted, thus the accuracy of controller output is enhanced. The simulation results indicate that in pressure disturbance tests, even control variables are given strict constraints, the deviation of each variable still keeps within a predetermined range;this satisfies the control requirements for Alstom gasifier.