From: robagar@TOOMUCHBLEEDINSPAMukfsn.org   
      
   I'm not sure how you'd do exactly what you want to do, but in a real world   
   situation would you even notice if the vehicle always steered to the left   
   (or always to the right) if it was heading _exactly_ towards a cone?   
      
   if you had a rule   
   if STRAIGHT_AHEAD then STEER_LEFT   
   then the cone would be avoided, but the influence of the rule would be   
   insignificant so long as the STRAIGHT_AHEAD set is small enough   
      
   Rob   
      
      
      
      
   "scooter"  wrote in message   
   news:j7tmovcnghd298jmnfihc9d29gu8h63085@4ax.com...   
   > anyone?   
   >   
   > On Tue, 07 Oct 2003 18:47:34 +0530, scooter    
   > wrote:   
   >   
   > >I'm trying to create a fuzzy controller for a vehicle to enable it to   
   > >steer around traffic cones. The controller will output a crisp value   
   > >equal to a steering force. Unfortunately I've run into a problem when   
   > >creating the rule set   
   > >   
   > >Let's say I have these simple fuzzy variables:   
   > >   
   > >DISTANCE_TO_CONE = {CLOSE, AVERAGE, FAR}   
   > >   
   > >POSITION_TO_CONE = {TO_LEFT, TO_CENTER, TO_RIGHT}   
   > >   
   > >STEERING = {STEER_LEFT, STEER_FORWARD, STEER_RIGHT}   
   > >   
   > >now how do I create a rule such that if the cone is directly ahead and   
   > >close to the vehicle the vehicle will steer to the left *or* to the   
   > >right?   
   > >   
   > >It seems that I can only create a  rule that makes the vehicle steer   
   > >in one direction:   
   > >   
   > >if CLOSE and TO_CENTER then STEER_LEFT   
   > >   
   > >   
   > >Is there a way I can overcome this problem? Is defining the   
   > >POSITION_TO_CONE variable as follows a possibility?   
   > >   
   > >POSITION_TO_CONE = {FAR_LEFT, SLIGHTLY_LEFT, SLIGHTLY RIGHT,   
   > >FAR_RIGHT}   
   > >   
   > >If so how would this system then deal with a value equally situated in   
   > >SLIGHTLY_LEFT &  SLIGHTLY RIGHT?   
   > >   
   > >   
   > >thanks   
   > >   
   > >   
   > >   
   > >   
   >   
      
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