Improvements in LLRF Control Algorithms and Automation - Desy
Improvements in LLRF Control Algorithms and Automation - Desy
Improvements in LLRF Control Algorithms and Automation - Desy
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<strong>LLRF</strong> FSM: Adaptive Feedforward (Def<strong>in</strong>ition)<br />
• Driv<strong>in</strong>g the cavity with Feedforward only should get close to the<br />
setpo<strong>in</strong>t curve to make proportional Feedback efficent.<br />
• Adaptive Feedforward should be self-updat<strong>in</strong>g, s<strong>in</strong>ce several outer<br />
parameters may changes (human or technical <strong>in</strong>terventions).<br />
• Adaptive Feedforward might be derived <strong>in</strong> a self-evolv<strong>in</strong>g, iterative<br />
process for be<strong>in</strong>g <strong>in</strong>dependent of nonl<strong>in</strong>earities.<br />
• Adaptive Feedforward needs to be fast.<br />
Repetitive fluctuations<br />
<strong>in</strong> klystron high voltage:<br />
September 7 th 2004 alex<strong>and</strong>er.br<strong>and</strong>t@desy.de 10/14
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