水轮机水门的分数阶PID控制策略研究

针对水轮机调速系统的强非线性及易受各种内外部干扰影响,基于分数阶PID控制策略提出了一种新型的水门非线性控制器。通过对水轮机水门开度模型进行反馈线性化,结合分数阶PID控制理论约束自定义的控制变量,且利用遗传算法在线调节控制器的参数。仿真结果证明,与常规PID控制方式相比,所设计的水门分数阶PID控制器能有效地阻尼系统振荡,调速系统的鲁棒性得到较好的改善。

Research on Fractional Order PID Control Strategies for Turbine Watergate

For the strong nonlinearity and sensitive effects of various disturbances in the speed regulation system, a new nonlinear controller for the turbine watergate is proposed based on the fractional order proportional integral derivative (PID) control strategy in this paper. By feedback linearization of the turbine water gate opening model, fractional order PID control strategy is applied to constraint self-defining control variables, and genetic algorithm is used to adjust the controller parameters online. The results of the computer simulation show that compared with the conventional PID control method the designed water gate controller can subside system oscillation more effectively with the robustness of the water gate speed control system improved.