FEEDBACK CONTROL OF CUTTING-TOOL FLUTTERS IN MECHANICAL PROCESSES
HE Guoyi(Institute for Adult Education, Nanchang Institute of Aeronautical Technology, Nanchang 330034, China)HE Guowei(Laboratory for Nonlinear Mechanics, Institute of Mechanics, CAS, Beijing, 100080, China)
The flutters of cutting-tools in mechanical processes are investigated in this paper. The flutters are typically self-excited oscillations and could be described by the well-known van der Pol equations. The analytical solutions of the van der Pol equations obtained by the averaging method show the mechanism of the self-oscillations. A new strategy of linear feedback is developed to control the flutters. The control strategy could be realized by a delayed linear function. The analytical solutions of the van der Pol equations with delayed linear feedback showthat the flutters could be effectively reduced. Numerical simulations confirm the theoretical predictions.
【CateGory Index】： TG506