D. Humphreys, J.M. Hanson, J. King, E.J. Strait, G. Jackson, A.M. Garofalo
ITPA Joint Experiment :
No
Description:
In a Thursday evening session, perform a thorough validation of a revised version of the PCS Error Field Category against the existing one
ITER IO Urgent Research Task :
No
Experimental Approach/Plan:
During this session, we will test the basic features of the revised error field category as well as vet the RWM feedback algorithm.
Background:
The capability to simulate the 3D coil and magnetic feedback system on DIII-D would help users to test, understand, and optimize the system performance. Although various RWM feedback models exist, a model of the full system on DIII-D does not. Beyond increasing confidence in the existing algorithms, a complete and well-understood model would also enable new advanced controllers to be developed, simulated, and implemented into the PCS.
The GA Control group has recently developed software tools that allow the PCS to integrate C source code generated by the Simulink Embedded Coder. These tools enable Matlab/Simulink-based control models to be directly incorporated into the PCS. A Matlab/Simulink model of the Error Field Category and PID-based RWM feedback algorithm will be developed in 2013 and the Embedded Coder will be used to generate the new PCS code. During this process, the new 3D magnetic diagnostic signals will be incorporated into the feedback algorithm. The performance of the new category and the existing one will be compared, providing a valuable test of the Embedded Coder workflow.