implement of pid controller circuit

Discussion in 'General Electronics Chat' started by panjangsangat, Mar 17, 2010.

  1. panjangsangat

    Thread Starter New Member

    Mar 17, 2010
    i have a problem about implement of pid controller circuit..
    i have the compensator transfer function which is G(s)=
    and i have this circuit
    opamp circuit.GIF
    regarding to circuit, i have difficulty to find the of each component especially 'R'..
    can you please help me how to find the resistant and capacitance value especially 'R'..
    i appreciate for all cooperation..
  2. Darren Holdstock

    Active Member

    Feb 10, 2009
    R is fairly arbitrary, it won't affect the answer of a homework exercise as it sets the gain of the summing amplifier to -1. In the real world anywhere between 1k and 100k should work well.

    Here's a starting point: Eo(s) = - (Ep(s)+Ei(s)+Ed(s)). Work out those last three terms individually and you have your transfer function.