基于分数阶自抗扰技术的核电站稳压器压力控制

针对传统PID在复杂的核电站稳压器控制系统中无法获得良好的控制效果的问题,提出了分数阶自抗扰控制器(FOADRC).该控制器将分数阶控制器与自抗扰控制器相结合,不仅具备分数阶控制器的快速与高精度特点,还具备自抗扰控制器的强鲁棒性和抗扰动性能,解决了ADRC技术中非线性状态误差反馈控制律调参较困难的问题.建立的稳压器压力控制的Simulink仿真模型表明,分数阶自抗扰控制器与传统PID控制和ADRC控制相比具有更加优良的性能指标.

Pressure control of pressurizer in nuclear power station based on fractional order auto disturbance rejection technique

Aiming at the problem that the traditional PID can not obtain good control effect in the complex pressurizer control system of nuclear power station, a fractional order auto disturbance rejection controller(FOADRC)was proposed. Both fractional order controller and auto disturbance rejection controller(ADRC)were combined in the present controller, so that the controller could not only have the rapidity and high precision features of fractional order controller, but also have the strong robustness and disturbance rejection performance of ADRC. Therefore, the problem of difficult parameter adjustment in the nonlinear state error feedback control law in ADRC technology gets solved. The established Simulink simulation model for the pressure control of pressurizer reveals that compared with the traditional PID control and ADRC control, the FOADRC has better performance indexes.