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介绍以专用控制芯片PBD3517、PBL3770为核心构成的两相步进电机控制器的设计。主要涉及核心控制电路的构成、同步化的改进及驱动电路的并联使用。通过实验证明该控制器简单、实用。“,”The design of stepper motor controller applying the special integrated circuits is introduced.Including the construction of main control circuits, synchronization improvements and parallel drivers. It is proved that the method is simple and practical by experiments.