Intelligent instrumentation, control and monitoring of precision motion systems

Abstract

High speed and high accuracy motion systems are essential elements in advanced manufacturing systems. Demands on higher productivity and product quality call for development of high performance positioning devices and accompanying robust control algorithms. Contributions in the areas of precision motion instrumentation, control and diagnostics are proposed in this thesis. In particular, an intelligent instrumentation methodology is developed for the purpose of adaptive online correction and interpolation of encoder signals. An intelligent nonlinear control methodology, based on a mixed PID/adaptive algorithm, is next presented. Following these, two approaches to monitor and suppress mechanical vibrations in precision motion systems is elaborated. Simulation and experimental results are provided to highlight the effectiveness of the proposed approaches.