Design and Realization of Robust Controller on the Stylus Probe For a Roundness Test Machine

• Main Authors: Chih-Hui Lee, 李志輝
• Other Authors: Jia-Yush Yen
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/11155046361430050205

博士 === 國立臺灣大學 === 機械工程學研究所 === 93 === Abstract This thesis presents the integration design of a roundness test machine using a novel smart stylus probe with a high stiffness air-bearing. The high stiffness air-bearing minimizes the effect of the spindle runout. The smart stylus design enables active control on the stylus force. The stylus design is based on the mechatronics concept and is made of relatively inexpensive parts. The force control is based on the strain gauge output to control the stylus movement. An optical fiber sensor detects the stylus position for the roundness measurement. The stylus force control enables active adjustment of the system response. It is also possible to use a high bandwidth loop for surface roughness measurement. This realization uses the µ-synthesis procedure to implement the performance and the uncertainty specifications. The realization allows the measurement of very small profile change without scratching the test object with the active stylus. The roundness tester is also built for experimental verification. Keywords：Stylus, roundness test machine, µ-synthesis, robust performance