一种提高步进电机运行质量的电流控制方法

Current Control Method for Improving Running Quality of Stepping Motor

双极性步进电机广泛用于许多应用中,从打印机到工业设备中的移动XY工作台。通常情况下,电机驱动都采用较廉价的专用步进电机驱动芯片控制。不幸的是,大多数这些驱动芯片都使用较简单的电流控制方法,使电机的电流波形不理想,导致电机运行精度不高。现在,通过在步进电机驱动集成电路内部集成双向电流采样,能有效提高电机运行控制精度,同时比传统解决方案降低了系统成本。

Bipolar stepper motors are widely used in many applications, ranging from printers to industrial equipment in the mobile XY workbench. Typically, motor drives are driven by cheaper dedicated stepper motors that drive the chip. Unfortunately, most of these drive chips use simpler current control methods, which make the motor＇s current waveform unsatisfactory, resulting in low motor accuracy. Now, through the integration of bi-directional current sampling in stepper motor drive IC, it can effectively improve the accuracy of motor operation control, while reducing the system cost than traditional solutions.