Title :
Design of a multivariable RF control system using gain-shaping in the frequency domain
Author :
Ziomek, Christopher D. ; Jachim, Stephen P. ; Natter, Eckard F.
Author_Institution :
Los Alamos Nat. Lab., NM, USA
Abstract :
The authors describe a multivariable control system that compensates the electrical structure of the accelerator by using gain-shaping in the frequency domain. The amplitude and phase quantities have been resolved into in-phase and quadrature (I&Q) variables. These orthogonal variables have simple mathematical relationships, and can be analyzed using linear transform function matrices. The transfer matrix theory has been applied to the design of the multivariable control system that regulates the RF field (I+Q) components. Frequency-domain controllers compensate these two signals to provide desired frequency response characteristics. A control pre-distorter performs an inverse coupling functions, so that the I&Q components are effectively decoupled by the accelerator. Computer interface circuitry allows the adaptive optimization of the mathematical transfer functions of the compensators.<>
Keywords :
control system synthesis; frequency-domain analysis; multivariable control systems; nuclear electronics; particle accelerators; physical instrumentation control; adaptive optimization; compensators; computer interface circuitry; control pre-distorter; controllers; electrical structure; frequency domain; frequency response characteristics; gain-shaping; in-phase; inverse coupling; linear transform function matrices; multivariable RF control system; phase quantities; quadrature; Acceleration; Control systems; Electric variables control; Feedback control; Frequency domain analysis; Laboratories; Particle accelerators; Particle beams; Radio frequency; Transfer functions;
Conference_Titel :
Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0135-8
DOI :
10.1109/PAC.1991.164623
