A simple and effective algorithm for synchronized control of four or more stepper motors for computer numerical control machines is presented. Advantages and disadvantages of stepper and servo motors for CNC machines are discussed. Various control topologies for stepper motors are analyzed. Different types of stepper motor drivers and their characteristics are explained. The main emphasis is on the algorithm for synchronous control of multiple motors. The mathematical background for moving functions is explained in context of an overall 3D printing process. A practical implementation of the algorithm is evaluated. Possible directions for further research in this area are pointed.
Keywords
CNC machineCNC machiningCNC milling machine3D printer3D printingStepper motor control
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