Application of H∞ Control Theory to Power Control of a Nonlinear Reactor Model
Application of H∞ Control Theory to Power Control of a Nonlinear Reactor Model
复制标题
DOI：
10.13182/nse92-112
复制
发表时间：
1993-10
影响因子：
1.2
通讯作者：
Katsuo Suzuki;Junya Shimazaki;Y. Shinohara
中科院分区：
文献类型：
--
作者：
Katsuo Suzuki;Junya Shimazaki;Y. Shinohara
将H[∞]控制理论应用于非线性核反应堆模型的补偿器设计，并与标准线性二次高斯（LQG）控制结果进行了比较。假定电抗器模型具有控制棒位置反馈补偿的控制棒驱动系统。反应堆模型的非线性对控制系统的稳定性有很大的影响，因此，核反应堆动力控制系统需要实现鲁棒稳定性，并提高反馈控制系统的灵敏度。基于LQG控制合成的功率控制系统的计算机仿真表明，控制系统存在一定的稳态偏移，稳定性较差。因此，在这里，关注的是一种鲁棒控制方法的发展，这种方法可以承受外源干扰和系统参数变化的非线性。所开发的方法在反馈系统中采用H[∞]控制理论，并显示出有趣的鲁棒性特征。计算机仿真结果表明，由该补偿器构成的反馈控制系统对核反应堆的稳定性和扰动衰减具有足够的鲁棒性，这是核反应堆安全运行所必需的。«少
The H[infinity] control theory is applied to the compensator design of a nonlinear nuclear reactor model, and the results are compared with standard linear quadratic Gaussian (LQG) control. The reactor model is assumed to be provided with a control rod drive system having the compensation of rod position feedback. The nonlinearity of the reactor model exerts a great influence on the stability of the control system, and hence, it is desirable for a power control system of a nuclear reactor to achieve robust stability and to improve the sensitivity of the feedback control system. A computer simulation based on a power control system synthesized by LQG control was performed revealing that the control system has some stationary offset and less stability. Therefore, here, attention is given to the development of a methodology for robust control that can withstand exogenous disturbances and nonlinearity in view of system parameter changes. The developed methodology adopts H[infinity] control theory in the feedback system and shows interesting features of robustness. The results of the computer simulation indicate that the feedback control system constructed by the developed H[infinity] compensator possesses sufficient robustness of control on the stability and disturbance attenuation, which are essential for the safemore » operation of a nuclear reactor.« less