【摘要】 针对Ⅰ阶线性自抗扰控制器应用于火电机组大惯性过程控制时响应较慢的问题，提出了一种改进设计方法。基于预估模型信息设计补偿环节，将扩张状态观测器的等效观测对象近似为比例环节，并通过对总和扰动进行补偿，使得闭环系统的动态近似于预期响应，且兼具良好的抗扰能力和鲁棒性。通过分析，明确了该控制器各参数的物理意义及其整定策略，通过仿真验证了控制效果和鲁棒性，并在某二次再热机组高压加热器水位和过热汽温Ⅰ级喷水减温控制回路上对该设计方法进行了组态和测试。结果表明：改进的自抗扰控制器提高了系统的控制性能；该方法的实现和整定较简便，具有良好的工程应用潜力。更多还原

【Abstract】 The conventional 1st-order linear active disturbance rejection controller performs slow closed-loop response in large inertia processes at thermal power units. To solve this problem, an improved design method of linear active disturbance rejection control was proposed. Based on the estimation of model information, a compensation structure was applied to fit an extended state observer which observed a similar proportion object and by using the lumped disturbance compensation, the dynamics of the closed-loop system behaved equivalent to the expected open-loop response, and it also showed the capability to reduce disturbance and system uncertanty. Through analysis, the physical definition of each parameter of the controller and its tuning strategy were determined. The control effect and robustness of proposed method were verified using simulation. The proposed method was configured and tested on the water level control of high pressure heater and the superheated steam temperature control of the 1st-stage attemperator of superheater of double-reheat coal-fired power plant. Results show that the improved active disturbance rejection controller can improve the control performance of the system, and the proposed method is conveniently to be implemented and set, which shows positive engineering application potential.更多还原