enabled.mdl

学自控的人应该好好看看哦！直接用其强大的函数功能。

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  Created		  "Mon Jul 27 10:28:00 1998"
  Creator		  "ldean"
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	  Text			  "This demonstration shows what happens when "
"a sign wave is fed into an \nenabled subsystem.  After running the simulation"
", the scope shows three\nplots.  \n\nThe first of these plots shows the origi"
"nal sine wave and the absolute \nvalue of the original sine wave offset by tw"
"o.  The absolute value of the sine\nwave is only shown when the subsystem is "
"enabled.  This occurs between\n0 and 2.5 seconds and 5 and 7.5 seconds.  When"
" the subsystem is not\nenabled then the output of the subsystem is reset to 0"
".  The value of 0 is\ndetermined by the initial condition of the outport. You"
" can see when \nthe subsysytem is enabled by looking at the second plot.  A v"
"alue of 1 \nindicates that it is enabled.\n\nThe second plot shows the origin"
"al value of the enable signal.  If the signal\nis towards the top of the plot"
" then the subsystem related to the first plot\nis enabled.  If the signal is "
"towards the bottom of the plot then the\nsubsystem related to the third plot "
"is enabled.  The difference on when the\nsubsystems are enabled is caused by "
"the logical NOT block.\n\nThe third plot shows the original sine wave and the"
" saturation limited sine \nwave offset by two.  The saturated value of the si"
"ne wave is only shown when \nthe subsystem is enabled.  This occurs between 2"
".5 and 5 seconds and 7.5\nand 10 seconds."
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	  Text			  "Enabled Subsystem Demonstration"
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