Abstract:The control methods of permanent magnet synchronous motor (PMSM) for printing and packaging and sensorless control technology were reviewed. Firstly, the main control methods of permanent magnet synchronous motor vector control system for packaging and printing machinery industry were presented. Then, PMSM sensorless control was classified by the two sensorless classification method of Professor Holtz with the introduction of methods of PMSM sensorless control provided and the advantages and disadvantages discussed in detail. In the end, the prospect of PMSM application and sensorless control in packaging and printing were described.