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Entry  Thu Jul 26 10:58:02 2012, Sarah, DailyProgress, ISS, ISS Box Transfer Function 8x
    Reply  Mon Jul 30 20:26:39 2012, Sarah, DailyProgress, ISS, ISS Box Transfer Function 13x
       Reply  Mon Aug 6 18:28:08 2012, Sarah, DailyProgress, ISS, ISS Box Transfer Function 7x
          Reply  Tue Aug 7 03:00:31 2012, rana, DailyProgress, ISS, ISS Box Transfer Function 
          Reply  Wed Aug 8 20:57:15 2012, Sarah, DailyProgress, ISS, ISS Box Transfer Function 
          Reply  Wed Aug 8 23:03:52 2012, Sarah, DailyProgress, ISS, ISS Box Transfer Function 7x
Message ID: 1034     Entry time: Tue Aug 7 03:00:31 2012     In reply to: 1033
Author: rana 
Type: DailyProgress 
Category: ISS 
Subject: ISS Box Transfer Function 

 

The TF ought to have a phase of +90 deg at low frequencies and -90 deg at high frequencies. This is for stability.

Then there can be a f^2 section and a 1/f^2 section in the middle band to get more suppression.

For example:

z = 0, 50, 1000 Hz

p = 300, 300, 300, 300 Hz

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