40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log  Not logged in ELOG logo
Entry  Thu Apr 5 01:07:08 2012, Mike J., Update, Computers, Hysteresis Plots SHO_hyst_plot.png
    Reply  Sat Apr 7 01:45:02 2012, Mike J., Update, Computers, Even Better Hysteresis Model and Plots hyst_v3.pnghyst_v_3.pnghyst_v_3-x(t).png
       Reply  Thu Apr 12 22:04:17 2012, Mike J., Update, Computers, New Hysteresis Model & Plots hyst_combo.pngferro_hyst.png
Message ID: 6487     Entry time: Thu Apr 5 01:07:08 2012     Reply to this: 6505
Author: Mike J. 
Type: Update 
Category: Computers 
Subject: Hysteresis Plots 

Here are the hysteresis plots from the most recent model, which uses a modified harmonic oscillator equation y''=-(Frequency)2*y-Hysteresis.  The hysteresis constant seems to change both the amplitude and equilibrium point of the pendulums, which is akin to changing the length of a pendulum without changing the frequency. This does not make sense. Perhaps the hysteresis value should be moved to the "spring" constant for the pendula and not restricted to a position-biasing value.

SHO_hyst_plot.png

ELOG V3.1.3-