With the development of industrial control in the direction of high speed,high precision,high reliability,more and more multi motor control occasions require synchronous between motors. In viewof the existing synchronous control structure exiting the disadvantages: the complex design of structure,the large online computation,and not easy to extend to the control structure of more than 2 motors. In this paper,based on the control theory of the least correlation axis,the control system of the multi motors is ...