【摘要】 在研究步进电机细分驱动原理的基础上,提出了一种采用FPGA芯片实现步进电机恒转矩细分驱动的方法。利用FPGA芯片中的嵌入式阵列块(EAB)构成LPM_ROM来存储步进电机各相细分电流的数据,并把斩波控制电路集成到FPGA内部,从而提高了系统的集成度和稳定性。微控制器只需提供细分数等参数,就能精确控制步进电机的运行,所以该设计特别适用于某些实时控制场合。更多还原

【Abstract】 On the basis of researching the principle of micro-step motor drive,the constant torque micro-step motor driving method based on FPGA is proposed.By adopting the embedded array block(EAB) in FPGA chip,the LPM_ROM is built for storing the data of fine division current of each phase for the stepping motor.In addition,the chopping control circuit is integrated into FPGA,which enhances the integrality and stability of the system.The stepping motor can be controlled and operated precisely with the numbers of fine divisions provided by the micro-controller,so the design is specifically suitable for certain real-time control occasions.更多还原