Author: Zagel, J.R.
Paper Title Page
S12FC01 Feedback – Closing the Loop Digitall 408
 
  • J.R. Zagel, B.E. Chase
    Fermilab, Batavia, Illinois, USA
  
  Many feed­back and feed­for­ward sys­tems are now using mi­cro­proces­sors within the loop. We de­scribe the wide range of pos­si­bil­i­ties and prob­lems that arise. We also pro­pose some ideas for analy­sis and test­ing, in­clud­ing ex­am­ples of mo­tion con­trol in the Fly­ing Wire sys­tems in Main Ring and Teva­tron and Low Level RF con­trol now being built for the Fer­mi­lab Linac up­grade. The stan­dard tech­niques used to de­sign and an­a­lyze ana­log feed­back sys­tems can also be ap­plied to dig­i­tal sys­tems. It is de­sir­able to con­sider fre­quency re­sponse, max­i­mum tol­er­a­ble error, and sta­bil­ity ques­tions for sys­tems con­trolled by proces­sors. In mod­ern dig­i­tal sys­tems a con­sid­er­able amount of soft­ware not only re­places ana­log cir­cuit func­tions but also al­lows ad­di­tional fea­tures to be built into the sys­tem.
Operated by Universities Research Association for the Department of Energy. 		 
DOI • reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S12FC01  
About • Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992  
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)