Title :
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
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;
Conference_Titel :
Control Conference (ECC), 2009 European
Conference_Location :
Budapest
Print_ISBN :
978-3-9524173-9-3
