Uncertain system modeling of SNS RF control system

Author

Kwon, Sung-il ; Regan, Amy ; Wang, Yi-Ming ; Lynch, Michael

Author_Institution

Los Alamos Nat. Lab., NM, USA

Volume

2

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

1249

Abstract

This paper addresses the modeling problem of the linear accelerator RF system for SNS. The cascade of the klystron and the cavity is modeled as a nominal system. In the real world, high voltage power supply ripple, Lorentz force detuning, microphonics, cavity RF parameter perturbations, distortions in RF components, and loop time delay imperfection exist inevitably, which must be analyzed. The analysis is based on the accurate modeling of the disturbances and uncertainties. In this paper, modern control theory is applied for modeling the disturbances, uncertainties, and for analyzing the closed loop system robust performance

Keywords

H^∞ control; accelerator cavities; accelerator control systems; closed loop systems; klystrons; linear accelerators; neutron sources; proton accelerators; superconducting cavity resonators; two-term control; uncertain systems; Lorentz force detuning; RF control system; SNS; cavity; closed loop system; control theory; high voltage power supply ripple; klystron; linear accelerator; microphonics; Control system synthesis; Klystrons; Linear accelerators; Lorentz covariance; Power supplies; Power system modeling; Radio frequency; Uncertain systems; Uncertainty; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001

Print_ISBN

0-7803-7191-7

Type

conf

DOI

10.1109/PAC.2001.986643

Filename

986643