Design of fuzzy controller development environment and it's application on digital position control

• Main Authors: Chiung_Yao Huang, 黃瓊瑤
• Other Authors: Ming-Shing Young
• Format: Others
• Language: zh-TW
• Published: 1994
• Online Access: http://ndltd.ncl.edu.tw/handle/93882224328853247298

碩士 === 國立成功大學 === 電機工程研究所 === 82 === Fuzzy logic have been successfully implemented to con- trol nonlinear,time-varying ,ill-defined system,to control systems whose dynamics are exactly known.In order to make profit on time and economics in the process of development of fuzzy logic, what we need is a more ideal development system.But,the fuzzy logic development kits which has been finished for sale are ordinarily too expensive,too compli- cated,not easy for an user to operate it, can't be put to the proof right away ,and so are not practical.To improve these drawbacks as stated above,we try to established by ourself a development environmemt.The one which we estab- lished has friendly user interface,and is easy to operate .It can even be used repeadtly for different need and be put to proof with few change when experimental hard ware is ready. Digital position control is still the base of automati- cally controlled machines.So, we take it to test the effec- tivity of development environment.The experimental system for demonstration is composed essentially of control soft- ware written in Microsft Windows operating environment ,control circuits,power circuits ,and interfaces.The con- trol software is a fuzzy controller whose functions assumed are user dialogue,data processing and transmission,display, diagnostic, measurement,etc.The control ciruits consist of three main parts. One is phase lock loop circuit, one is pulse wide modulation circuit,the other one contains incremental encoder,up/down counters,and an interface circuit which pro- cesses output signal of encoder in order to provide infor- mation on position and speed.The power circuits consist of dc motor fed by a four- quadrant transistor bridge which is nece- ssary for acceleration and braking in both directions.Besides above ,in order to find the suitable and stable parameters of fuzzy logic ,we adopt Taguchi-Method to experiment auxilarily. From the result of demonstration ,we can see the effectivity of our development environment.