Description: The system uses AT89S51 microcontroller to control the stepper motor, the motor can be achieved not only rotating, you can also turn the display to achieve the preset step, and the LED reversing the status display, circuit design, reliable and easy to implement, easy to program design to understand. The system consists of key circuit, the smallest single-chip system, AT89S51 microcontroller, stepper motor reversing the status display circuit, drive circuit and the stepper motor composed of several parts. Output driver circuit using a six-chip 74LS04 NAND gate and ULN2003A, to drive the four-phase stepper motor windings. Short circuit protection using a 0.4A fuse to prevent short circuit due to winding of the motor windings burned burned.
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stepping motor design\步进电机设计报告1.doc
stepping motor design