Active Magnetic Bearing Technology Development in High-Speed Motorized Spindles

High-speed electric spindles are the core functional components of high-speed precision machine tools. Active magnetic levitation technology is the basis for the normal operation and work of magnetic levitation electric spindles. After decades of development, active magnetic levitation electric spindles have established many cases in the field of scientific research, but So far, it has not been widely used in the field of high-speed machine tools. In order to explore the main reasons why the active magnetic suspension electric spindle is difficult to promote in the high-speed machine tool field, first, the development history of the active magnetic suspension electric spindle is systematically reviewed; secondly, from the bearing capacity of the magnetic bearing, In terms of system dynamics modeling, magnetic bearing controller design, and control system response characteristics, the key technologies of active magnetic levitation electric spindles are comprehensively reviewed and analyzed. Finally, from ultra-high-speed light-load processing, ultra-precision gas magnetic levitation, high-speed The development of magnetic dense materials, new FPGA control chips, power amplifiers and sensor angles put forward the development trend of active magnetic levitation electric spindles in the future.