In this paper, the Quantitative Feedback Theory (QFT) is proposed to design a controller for feed drive of Virtual Computer Numerical Control (VCNC) systems. The designed robust QFT controller is also compared to two commonly used controller design methods, i.e. Fuzzy Control (FC) and Sliding Mode Control (SMC), for contour tracking problem. The position commands required for contour following task are evaluated by the Non-Uniform Rational BSpline (NURBS) curve interpolator with the S-shape feedrate profile for two contours, i.e. "heart" and "omega" as the case studies. After modeling the feed drive of the VCNC system, the robust QFT controller and also FC and SMC controllers are designed to achieve the allowable tolerance contour error. The simulation results for the "heart" and "omega" contour following tasks with the aforementioned controllers were analyzed and discussed. It is found that the designed QFT controller not only achieves the tight contour error but also yields better satisfactory performance, especially at the corners of the tool path, compared to the other controllers used in contour following applications in VCNC systems.
JAHANPOUR, J. , HONARI-TORSHIZI, M. and GHARIB, M. R. (2015). VCNC CONTOUR FOLLOWING TASKS USING ROBUST QFT CONTROLLER. Iranian Journal of Science and Technology Transactions of Mechanical Engineering, 39(M1), 131-145. doi: 10.22099/ijstm.2015.2954
MLA
JAHANPOUR, J. , , HONARI-TORSHIZI, M. , and GHARIB, M. R. . "VCNC CONTOUR FOLLOWING TASKS USING ROBUST QFT CONTROLLER", Iranian Journal of Science and Technology Transactions of Mechanical Engineering, 39, M1, 2015, 131-145. doi: 10.22099/ijstm.2015.2954
HARVARD
JAHANPOUR, J., HONARI-TORSHIZI, M., GHARIB, M. R. (2015). 'VCNC CONTOUR FOLLOWING TASKS USING ROBUST QFT CONTROLLER', Iranian Journal of Science and Technology Transactions of Mechanical Engineering, 39(M1), pp. 131-145. doi: 10.22099/ijstm.2015.2954
CHICAGO
J. JAHANPOUR , M. HONARI-TORSHIZI and M. R. GHARIB, "VCNC CONTOUR FOLLOWING TASKS USING ROBUST QFT CONTROLLER," Iranian Journal of Science and Technology Transactions of Mechanical Engineering, 39 M1 (2015): 131-145, doi: 10.22099/ijstm.2015.2954
VANCOUVER
JAHANPOUR, J., HONARI-TORSHIZI, M., GHARIB, M. R. VCNC CONTOUR FOLLOWING TASKS USING ROBUST QFT CONTROLLER. Iranian Journal of Science and Technology Transactions of Mechanical Engineering, 2015; 39(M1): 131-145. doi: 10.22099/ijstm.2015.2954
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