TY - JOUR
T1 - Tokamak-agnostic actuator management for multi-task integrated control with application to TCV and ITER
AU - Trang Vu, N.M.
AU - Blanken, Thomas C.
AU - Felici, F.
AU - Galperti, C.
AU - Kong, M.
AU - Maljaars, E.
AU - Sauter, O.
PY - 2019/10/1
Y1 - 2019/10/1
N2 - The plasma control system (PCS) of a long-pulse tokamak must be able to handle multiple control tasks simultaneously, and must be capable of robust event handling with a limited set of actuators. For ITER, this is particularly challenging given the large number of actuator-conflicting control requirements. To deal with these issues, this work develops a task-based approach, where a plasma supervisory controller and an actuator manager make high-level decisions on how to handle the considered control tasks, using generic actuator resources and controllers. This simplifies the interface for operators and physicists since the generic control tasks (instead of controllers) can be directly defined from the general physics goals. This approach also allows one to decompose the PCS into a tokamak-dependent layer and a tokamak-agnostic layer. The developed scheme is first implemented and tested on TCV for simultaneous β control, neoclassical tearing mode (NTM) control, central co-current drive, and H-mode control tasks. It is then applied to an ITER test scenario to prove its flexibility and applicability to systematically handle a large number of tasks and actuators.
AB - The plasma control system (PCS) of a long-pulse tokamak must be able to handle multiple control tasks simultaneously, and must be capable of robust event handling with a limited set of actuators. For ITER, this is particularly challenging given the large number of actuator-conflicting control requirements. To deal with these issues, this work develops a task-based approach, where a plasma supervisory controller and an actuator manager make high-level decisions on how to handle the considered control tasks, using generic actuator resources and controllers. This simplifies the interface for operators and physicists since the generic control tasks (instead of controllers) can be directly defined from the general physics goals. This approach also allows one to decompose the PCS into a tokamak-dependent layer and a tokamak-agnostic layer. The developed scheme is first implemented and tested on TCV for simultaneous β control, neoclassical tearing mode (NTM) control, central co-current drive, and H-mode control tasks. It is then applied to an ITER test scenario to prove its flexibility and applicability to systematically handle a large number of tasks and actuators.
KW - Actuator management
KW - Plasma control system
KW - Plasma integrated control
UR - http://www.scopus.com/inward/record.url?scp=85068762040&partnerID=8YFLogxK
U2 - 10.1016/j.fusengdes.2019.111260
DO - 10.1016/j.fusengdes.2019.111260
M3 - Article
AN - SCOPUS:85068762040
SN - 0920-3796
VL - 147
JO - Fusion Engineering and Design
JF - Fusion Engineering and Design
M1 - 111260
ER -