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在线性自抗扰控制技术基础上,引入解耦补偿器,提出汽包锅炉单元机组协调系统的新控制方案。该方案首先对单元机组设计解耦补偿器,进行一定程度解耦;再将其他通道耦合作为扰动,分别设计炉侧和机侧线性自抗扰控制器,进一步消除耦合的影响。由于线性自抗扰控制技术采用扩张状态观测器,可以对扩张状态(系统未建模动态摄动和未知扰动)进行在线实时估计,因此其设计的扰动补偿可以不依赖于模型达到快速消去扰动的效果。将该方法应用于一500 MW汽包锅炉单元机组协调系统进行仿真研究,结果表明该方案可以实现良好的动静态解耦,有较强的鲁棒性和抗干扰能力,并且算法简单、调试容易。
Based on the linear ADRC technology, the decoupling compensator is introduced and a new control scheme of the boiler unit unit coordination system is put forward. In this scheme, the decoupling compensator is first designed for the unit unit and decoupled to a certain degree. Coupling the other channels as the disturbance, the linear and self-reactive linear disturbance rejection controllers are designed respectively to further eliminate the influence of the coupling. Because of the linear state-of-the-art disturbance rejection control technology, an extended state observer can be used to perform online real-time estimation of the dilated state (unmodeled dynamic perturbation and unknown disturbance). Therefore, the designed disturbance compensation can be independent of the model to achieve rapid elimination of perturbations effect. The method is applied to a 500 MW drum boiler unit coordination system simulation results show that the scheme can achieve good dynamic and static decoupling, strong robustness and anti-interference ability, and the algorithm is simple, easy to debug .