Abstract
Stepper motor is a common execution unit in electromechanical control system. In order to realize the high precision and effective control of the stepper motor, a digital control scheme integrated in the stepping motor driver chip is proposed. On the ADMS platform, the digital control system is designed by Verilog HDL language, and the digital control system is connected with the H-bridge circuit. The control of the two-phase micro-stepping motor is realized by Eldo and Modelsim simulation. It can support SPI bus to set working mode, attenuation time, micro-stepping work mode and other parameters. The intelligent harmonic scheme can effectively reduce the ripple current, and the ripple current can be controlled. The control scheme adopts modular design, the coding is simple and easy, and has high application value.
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