Virtual CNC system. Part I. System architecture |
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| Authors: | Chi-Ho Yeung Yusuf Altintas Kaan Erkorkmaz |
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| Affiliation: | aManufacturing Automation Laboratory University of British Columbia, Department of Mechanical Engineering, 2324 Main Mall, Vancouver, BC, Canada V6T 1Z4;bDepartment of Mechanical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ont., Canada N2L 3G1 |
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| Abstract: | The paper presents a comprehensive virtual simulation model of a realistic and modular CNC system. The Virtual CNC architecture represents an actual CNC, but with modular feed drives, sensors, motors, and amplifiers. The CNC software library includes a variety of trajectory interpolation and axis control laws. Constant, trapezoidal and cubic acceleration profiles can be selected as a trajectory generation module. The control laws can be selected ranging from a simple PID to complex Pole Placement, Generalized Predictive Control or Sliding Mode Controller with friction compensation. When the Virtual CNC is assembled, its performance can be tested using frequency and time domain response analyses, which are automated. The Virtual CNC includes both analytical tuning methods for linear controllers, as well as Fuzzy Logic based expert auto-tuning system for Adaptive Sliding Mode Control. The paper includes detailed experimental verification of the Virtual CNC. |
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| Keywords: | Virtual machining CNC Modeling Controls Interpolation |
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