how to control the position of a DC motor by FLC

hi, i would control the position of a DC motor by FLC, whereby i made a model with simulink and then i insert the rules base in the FLC, but when i start the process the trend of the position is a straight line descending, which is wrong

The model is:

http://i59.tinypic.com/21cf4lk.jpg

Answer 1

[Manikandan]

i completed the same, refer this link, if you want more clarification write me: [e-mail]

http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6838474&newsearch=true&queryText=manikandan,%20motor