integrated plasma control system for ir-t1 tokamak with disruption mitigation

Controlling tokamak plasmas is a complex process that is affected by structured uncertainties and unmodeled dynamics. to overcome these challenges and achieve a well-defined robust behavioral outcome, it is crucial to develop standard controllers. the decoupling control theory for multiple-input multiple-output (mimo) processes is a powerful technique that allows the mitigation or elimination of undesirable cross-coupling terms in tokamaks, making it superior to the single-input single-output (siso) control scheme. our study proposes two types of controllers, pid-tuned and cascaded-robust controllers, that exploit decoupling and robustness for horizontal position and current control of plasma in ir-t1 tokamak. we compare the controllers through simulations and study the impact of changing the vertical field coil voltage on the cross-coupling of these two plasma parameters. the results demonstrate that the pid-tuned controller outperforms the robust controller in terms of meeting control requirements, disturbance rejection, reference value tracking, and disruption mitigation, especially in cross-coupling controls. of course, the definitive confirmation requires experimental studies with more diverse conditions and, finally construction and operation of these controllers in tokamaks.

integrated plasma control system for ir-t1 tokamak with disruption mitigation

controlling tokamak plasmas is a complex process that is affected by structured uncertainties and unmodeled dynamics. to overcome these challenges and achieve a well-defined robust behavioral outcome, it is crucial to develop standard controllers. the decoupling control theory for multiple-input multiple-output (mimo) processes is a powerful technique that allows the mitigation or elimination of undesirable cross-coupling terms in tokamaks, making it superior to the single-input single-output (siso) control scheme. our study proposes two types of controllers, pid-tuned and cascaded-robust controllers, that exploit decoupling and robustness for horizontal position and current control of plasma in ir-t1 tokamak. we compare the controllers through simulations and study the impact of changing the vertical field coil voltage on the cross-coupling of these two plasma parameters. the results demonstrate that the pid-tuned controller outperforms the robust controller in terms of meeting control requirements, disturbance rejection, reference value tracking, and disruption mitigation, especially in cross-coupling controls. of course, the definitive confirmation requires experimental studies with more diverse conditions and, finally construction and operation of these controllers in tokamaks.