A Study of Bi-axial Motion Position Control Using Pneumatic Cylinder and Stepping Motor as Actuators

• Main Authors: Chi-Ji Ho, 何啟吉
• Other Authors: Ming-Chang Shih
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/wj33fp

碩士 === 國立成功大學 === 機械工程學系碩博士班 === 90 === 　　In general, pneumatic servo control system is implemented in the way of fixing pneumatic cylinder at either horizontal axis or vertical axis. This paper attempts to study bi-axial position control using a pneumatic cylinder and a stepping motor as actuators. 　　A self-tuning fuzzy logic controller is presented. Depending on the process trend, the output scaling factor of controller is modified on-line by an real-time gain updating factor . The value of real-time gain factor is determined from a rule-base defined on error and change of error of the controlled variable. The most important point to note is that real-time gain factor is not dependent in any way, on any process parameter. The value of real-time gain factor depends only on the instantaneous process states .Hence the proposed controller is process independent.