| 论文简介 |
The Canadian SuperCritical Water-cooled Reactor (SCWR) is a once-through pressure tube–
type SCWR under development in Canada. It is a multivariable system with strong cross coupling and a
high degree of nonlinearity. The outputs are sensitive to disturbances, and the variations in the thermal
parameters should be limited to avoid thermal stress to its components. Therefore, designing an adequate
control system is challenging. In this paper, robust multivariable feedback control and feedforward control
are proposed to design the control system of the Canadian SCWR. Three uncertainty sources are considered:
unmodeled uncertainty, linearization uncertainty, and model reduction uncertainty. These uncertainties
are evaluated taking into account all aspects affecting the linear dynamic model used in the robust
controller synthesis, and the uncertainty bounds are determined to cover the uncertainties. The robust
feedback controller is synthesized using the μ-synthesis approach. The feedforward control is added to the
robust feedback control to further improve the control performance. It is obtained through disturbance
compensation features for a feedforward controller. The control performance of the hybrid control system is
evaluated based on the nonlinear simulation by introducing different setpoint changes. The designed control
system can stabilize the Canadian SCWR, and the control performance is satisfactory. |
(创新港)
