Research of CNC electromagnetic levitation height self-tuning quantization scale factor fuzzy control

For the mobile beam suspension height of gantry CNC machining center. In order to eliminate influence of friction, improve machine precision, this paper adopt maglev technology to suspension beam. In this paper, mathematical model of gantry beam suspension system is established, and then a self-tuning quantization scale factor fuzzy controller is designed. The fuzzy controller can real-time adjust quantification factors and scaling factor, and improve suspension precision, then flexible control to the whole system is achieved. At the same time, disturbance observer is designed to observe the external disturbance and model uncertainties. Then the equivalent output which was observed is sent to the control input, to achieve interference suppression. The simulation results show: this control scheme is applied to control the suspension beam, the system has good performance of anti-interference and high stiffness. The Beam can be stable suspension without friction.