Dspin软件和EVAL6470H问题

嗨，


我一直在尝试在EVAL6470H板上调整步进电机的BEMF补偿参数。我正在使用WindowsXP上的Dspin评估软件和STEVAL-PCC009V1通信板。我用示波器和钳形表监测绕组电流。

经过几个小时的尝试后，无论我为起始坡度，交叉速度或最终acc / dcc坡度输入什么参数，都无法在任何特定速度下实现电机所消耗电流的任何变化。我试图将电机电流保持在1.5a rms附近，最高可达1600 cps，但电流在速度范围内稳定上升。我可以调整KVAL参数并影响所绘制电流的水平，但无论我在所提到的参数中输入什么值，“斜率”似乎都保持不变。无论我为这些参数输入什么设置，我都看不到以任何速度绘制的电流都没有影响。


你能给任何一个adivce吗？ Dspin软件中是否存在错误，或者我的EVAL6470H板有错误？


非常感谢。



以下为原文




Hi,


I have been trying to adjust the BEMF compensation parameters for my stepper motor on a EVAL6470H board.  I am using the Dspin evaluation software on WindowsXP and an STEVAL-PCC009V1 communications board.  I am monitoring the winding current with an oscilloscope and and clamp meter.

After hours of trying I was unable to achieve any change in the current drawn by my motor at any particular speed, no matter what parameters I enter for the starting slope, intersect speed, or final acc/dcc slope.  I am attempting to keep the motor current near 1.5a rms up to about 1600 cps, but the current rises steadily over the speed range.  I can adjust the KVAL parameters and affect the level of the current drawn, but the ''slope'' seems to remain the same no matter what values I enter in the parameters mentioned.  I can see no effect on the current drawn at any speed no matter what settings I enter for these parameters.   


Can you give any adivce?  Is there a bug in the Dspin software or do I perhaps have a faulty EVAL6470H board?


Thanks much.