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Lead/lag analog circuit

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Uploaded by on Mar 28, 2009

After discussing lead/lag functions used in feedforward control systems (for dynamic compensation), my students and I simulated one on a breadboard using variable resistors and capacitors. A square-wave function generator serves as the source of input step-change signals, while an oscilloscope displays the lead/lag function output.

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  • @sickboymike The circuit by itself is pretty useless. It does, however, illustrate the operation of a lead/lag function of the type used in "feedforward" control systems to compensate for different lag times in a process control loop. It's hard to explain in 500 characters, so if you want more info you'll probably have to read the chapter in my book on feedforward.

  • What would be the purpose for this lead lag circuit?

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