An iterative learning control approach combined with a multivariable RF controller for the Free Electron Laser FLASH

Author

Langkowski, H. ; Schmidt, C. ; Lichtenberg, G. ; Werner, H.

Author_Institution

Inst. of Control Syst., Hamburg Univ. of Technol., Hamburg, Germany

fYear

2009

fDate

23-26 Aug. 2009

Firstpage

442

Lastpage

447

Abstract

Controlling large scale radio frequency fields in a superconducting linear accelerator to a certain accuracy demands high requirements of the control system. The pulsed operation mode allows the application of iterative learning control algorithms beside the real time feedback controller. This paper presents design and application of an iterative learning controller which operates on an underlying control loop with a low-order H_∞ controller. Measurement results are given from the FPGA based control system at the FLASH facility at DESY.

Keywords

H^∞ control; control system synthesis; field programmable gate arrays; free electron lasers; frequency control; iterative learning control; linear accelerators; multivariable control systems; optical control; physical instrumentation control; DESY; FLASH facility; FPGA based control system; Free Electron Laser FLASH; iterative learning control approach; large scale radio frequency fields; low-order H_∞ controller; multivariable RF controller; pulsed operation mode; real time feedback controller; superconducting linear accelerator; underlying control loop; Clocks; Decision support systems; Europe; Filling; Iterative methods; Probes; Radio frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Conference (ECC), 2009 European

Conference_Location

Budapest

Print_ISBN

978-3-9524173-9-3

Type

conf

Filename

7074442