Implementation of BN Control in the National Spherical Torus Experiment | Zendy

S. P. Gerhardt | Zendy; M.G. Bell | Zendy; M Cropper | Zendy; D. Gates | Zendy; E Koleman | Zendy; J. Lawson | Zendy; B Marsala | Zendy; J. Ménard | Zendy; D. Mueller | Zendy

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Implementation of BN Control in the National Spherical Torus Experiment

Author(s) -

S. P. Gerhardt,

M.G. Bell,

M Cropper,

D. Gates,

E Koleman,

J. Lawson,

B Marsala,

J. Ménard,

D. Mueller

Publication year - 2012

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/1056653

Subject(s) - torus , operator (biology) , pid controller , power (physics) , fusion , value (mathematics) , control (management) , order (exchange) , physics , nuclear fusion , nuclear engineering , computer science , control theory (sociology) , simulation , mathematics , nuclear physics , engineering , geometry , statistics , quantum mechanics , chemistry , thermodynamics , artificial intelligence , philosophy , repressor , temperature control , linguistics , biochemistry , transcription factor , finance , economics , gene

We have designed and constructed a system for control of the normalized B in the National Spherical Torus Experiment [M. Ono, et al., Nuclear Fusion 40, 557 (2000)]. A PID operator is applied to the difference between the present value of B N (from realtime equilibrium reconstruction) and a time-dependent request, in order to calculate the required injected power. This injected power request is then turned into modulations of the neutral beams. The details of this algorithm are described, including the techniques used to develop the appropriate control gains. Example uses of the system are show

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