Stepper motor speed control with labVIEW

This paper describes an appropriate method for control of stepper motor from viewpoints of velocity, direction of rotation, step status and torque. Control of these parameters is performed by LabVIEW software and driver card. The stepper motor can be controlled accurately by configuring the driver controller card over the serial port on computer and writing the appropriate program in block diagram of LabVIEW using the card drivers. At the start of this proposed method, the control flowchart is created and then the graphical programming is accomplished in LabVIEW environment according to flowchart control. This method is capable to change the configuration of control. Thus, the proposed method can be used for control of stepper motor that used in different machinery such as CNC machines.