控制理论与应用2018，Vol.35Issue(2)：184-197,14.DOI:10.7641/CTA.2017.70026
单元机组的非线性自适应反演综合控制
Nonlinear adaptive backstepping integrated control for thermal-power-generation units
摘要
Abstract
For the complete model (boiler-turbine-generator model) of a thermal power generation unit considering both external disturbances and parameter uncertainties,a new nonlinear integrated control strategy is proposed based on adaptive backstepping method and coordinated passivity theory. At first,the steam-valving controller is obtained by using backstepping method for the controlled object subsystems after preprocessing. Then,the excitation part is optimized by taking the high side voltage as the control target. At last,a stepwise recursive design of the fuel controller is presented. In the control law design process,parameter update laws are designed by using sufficiently smooth projection operators to conquer the effect of parameter uncertainties and avoid the possibly parameter-drift. At the same time,the nonlinear-damping is added in control laws to effectively inhibit the impact of external disturbance on the control quality.The results of simulation analysis and a load-changing experiment show that the proposed nonlinear integrated control system has strong positive impact on the performance of active and reactive power of the unit. It has satisfactory performance in load tracking,disturbance rejection and robustness to model uncertain parameters.关键词
锅炉-汽轮机-发电机单元/非线性控制/自适应反演法/协调无源性/充分光滑投影算子Key words
boiler-turbine-generator units/nonlinear control/adaptive backstepping method/coordinated passivity/sufficiently smooth projection operator分类
信息技术与安全科学引用本文复制引用
席嫣娜,王印松..单元机组的非线性自适应反演综合控制[J].控制理论与应用,2018,35(2):184-197,14.基金项目
国家自然科学基金项目(61533013),中央高校基本科研业务费专项资金项目(2017XS137),国家建设高水平大学公派研究生项目资助.Supported by National Natural Science Foundation of China(61533013),Fundamental Research Funds for Central Universities(2017XS137)and the State Scholarship Fund of CSC. （61533013）
