基于ARM的步进电机细分控制.pdfVIP

20 4 () Vol. 20 No. 4 2006 12 Journal ofN anhuaUn iversit ( Science and T echnolog ) Dec. 2006 : 1673- 0062( 2006) 04- 0016- 04 基于ARM 的步进电机细分控制 * 徐祖华, 肖志华 , 苏泽光 ( , 421001) : 本文设计的步进电机细分控制系统, 基于ARM 7 芯片 LPC2214 和专用驱 芯片 LMD18245, 采用/ 线性+ 正弦0波形驱 方法和电流矢量恒幅均匀旋转算法, 通 过ARM 控制器产生波形数据, 经 D /A 芯片MAX526转换成对应的控制电压, 经过驱 芯片 LMD 18245放大, 驱 两相步进电机. 通过键盘输入控制信号, 利用液晶显示 电机的频率和细分倍数, 利用 uCL inux和 M in iGU I平台进行程序设计. 该系统实现了 步进电机的多功能控制, 得到 4096细分的精确步进效果. : 步进电机; 细分; ARM : TM 301. 2 : B Design of StepperM otor Subdivision Control System Based on ARM * XU Zu-hua, X AO Zhi-hua , SU Ze-guang ( School ofE lectricalEngineering, Nanhua Un iversit , H eng ang, H unan 421001, China) Abstract: A stepper motor subdivision control s stem has been designed in th is paper, w hich is based on ARM 7 chip LPC2214 and the LMD 18245 electricalmachiner special- purpose driver chip. The / linear + sine0 w ave driver method and the electric current vec- tor constant breadth algorithm is used in th is s stem. The digitalwave data is generated b ARM controller, wh ich is converted to corresponding control voltage. The voltage is enlarged b driver ch ip LMD 18245 to drive the two- phase stepper motor. The control sign is input b the ke board, and the frequenc and the subd ivided multiple are disp la ed b liquid cr stal. The softw are based on uCL inux and M in iGU I p latform is designed. Mu lti- purpose control of the stepper motor and 4096 subdivision multip le are realized in the s stem. K ey w ords: stepper moto