Sliding Mode Motion Control of a Three-Axis CNC Platform

• Main Authors: Yu-MinShen, 沈育民
• Other Authors: Chieh-Li Chen
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/40761357066034048345

碩士 === 國立成功大學 === 航空太空工程學系碩士在職專班 === 104 === The main purpose of this paper is to explore the performance of the position accuracy with the different controller design. The motion of the hardware is driven by the servomotor connected with a ball screw. In order to achieve the required accuracy, and resist the external disturbance from the friction and the uncertainty of the system, the sliding mode controller (SMC) is used in this paper for a tracking assignment. Compared with a traditional PI-controller, we found that the accuracy of the SMC with less bandwidth affected is better. The results demonstrated that the contour tracking accuracy can successfully reach to 0.5mm by utilizing the PI type sliding controller.