| dc.description.abstract | Runout due to the eccentricity of the rotating machine tool, the spindle axis, and I or the bearings of a spindle axis reduces the precision of machined parts. When the required precision of machined products is not high, runout effect can be tolerated However, when high precision is required, runout effect needs to be eliminated or reduced to a tolerable level. Conventional controllers such as Proportional-Plus-Integral (PI) and feedback controllers are not adequate for runout compensation, especially when the frequency of runout is high. A new controller, the repetitive controller, had been proposed by other researchers for use in repeated jobs like the tracking of robot manipulators, non-circular machining, and the positioning of computer storage read I write heads. The success of these applications suggests the possibility of applying the repetitive controller on runout compensation for a peripheral milling process. Results are encouraging: They show that, using appropriately selected controller gains and sampling rate, the application is successful. The research results had been written and sent out as a technical paper and been accepted for publication by Symposium on Advances in Manufacturing Systems Engineering, the Winter Annual Meeting of the American Society of Mechanical Engineers, San Francisco, December 1989. This thesis is written based on the framework of that paper which has the same title as this thesis. In addition, more simulation results, more functions and derivations, more detailed discussion and explanation, and more references are presented in this thesis. Such additional information will make this thesis much more easier to read and understand. | |
