TI中文支持网Part Number:DRV10983
马达参数如下：
寄存器设置如下：
0x20~0x2B:{0x5E ,0x0C ,0x3A ,0x00 ,0x00 ,0xD1 ,0xA3 ,0x90 ,0x0E ,0x48 ,0x00 ,0x0C}
目标转速180hz/s
调试过程中发现当马达速度加速到一定速度后，通过IIC命令继续增加速度，马达速度无法继续增加，反而会报错停止转动。
如下是从120hz加速到出现过程中获取到的寄存器状态，转速超过144就开始异常了。
搞了好久了，请帮忙分析一下，多谢！！
Motor_speed_poll speed=124;
Motor_state_poll : 0x04
BLDCDATA 0X00~0X03 = 0X0E,0X81,0X80,0XF0
BLDCDATA 0X10~0X16 = 0X0F,0X1C,0X72,0X00,0X85,0X00,0X07
BLDCDATA 0X17~0X1E = 0X04,0X0C,0X00,0X67,0X87,0X83,0X04
BLDCDATA 0X20~0X25 = 0X5E,0X0C,0X3A,0X00,0X00,0XD1BLDCDATA 0X26~0X2B = 0XA3,0X90,0X0F,0X48,0X00,0X0C
Motor_speed_poll speed=128;
Motor_state_poll : 0x04
BLDCDATA 0X00~0X03 = 0X18,0X81,0X80,0XF0
BLDCDATA 0X10~0X16 = 0X0F,0X1D,0XA7,0X00,0X83,0X00,0X08
BLDCDATA 0X17~0X1E = 0X03,0XFD,0X00,0X67,0X8C,0X88,0X04
BLDCDATA 0X20~0X25 = 0X5E,0X0C,0X3A,0X00,0X00,0XD1BLDCDATA 0X26~0X2B = 0XA3,0X90,0X0F,0X48,0X00,0X0C
Motor_speed_poll speed=139;
Motor_state_poll : 0x04
BLDCDATA 0X00~0X03 = 0X22,0X81,0X80,0XF0
BLDCDATA 0X10~0X16 = 0X0F,0X20,0X00,0X00,0X78,0X00,0X05
BLDCDATA 0X17~0X1E = 0X04,0X11,0X00,0X67,0X91,0X8D,0X04
BLDCDATA 0X20~0X25 = 0X5E,0X0C,0X3A,0X00,0X00,0XD1BLDCDATA 0X26~0X2B = 0XA3,0X90,0X0F,0X48,0X00,0X0C
Motor_speed_poll speed=144;
Motor_state_poll : 0x04
BLDCDATA 0X00~0X03 = 0X2C,0X81,0X80,0XF0
BLDCDATA 0X10~0X16 = 0X0F,0X20,0X00,0X00,0X73,0X00,0X04
BLDCDATA 0X17~0X1E = 0X04,0X06,0X00,0X67,0X96,0X92,0X04
BLDCDATA 0X20~0X25 = 0X5E,0X0C,0X3A,0X00,0X00,0XD1BLDCDATA 0X26~0X2B = 0XA3,0X90,0X0F,0X48,0X00,0X0C
Motor_speed_poll speed=150;
Motor_state_poll : 0x24
BLDCDATA 0X00~0X03 = 0X36,0X81,0X80,0XF0
BLDCDATA 0X10~0X16 = 0X0F,0X20,0X92,0X00,0X6E,0X00,0X03
BLDCDATA 0X17~0X1E = 0X04,0X11,0X00,0X67,0X9B,0X97,0X24
BLDCDATA 0X20~0X25 = 0X5E,0X0C,0X3A,0X00,0X00,0XD1BLDCDATA 0X26~0X2B = 0XA3,0X90,0X0F,0X48,0X00,0X0C
Motor_speed_poll speed=122;
Motor_state_poll : 0x24
BLDCDATA 0X00~0X03 = 0X40,0X81,0X80,0XF0
BLDCDATA 0X10~0X16 = 0X0F,0X1C,0X72,0X00,0X86,0X00,0X07
BLDCDATA 0X17~0X1E = 0X04,0X18,0X00,0X66,0XA0,0X9C,0X24
BLDCDATA 0X20~0X25 = 0X5E,0X0C,0X3A,0X00,0X00,0XD1BLDCDATA 0X26~0X2B = 0XA3,0X90,0X0F,0X48,0X00,0X0C
Motor_speed_poll low detected!!! count=1, speed=47;
Motor_speed_poll speed=47;
Motor_state_poll : 0x26
BLDCDATA 0X00~0X03 = 0X4A,0X81,0X80,0XF0
BLDCDATA 0X10~0X16 = 0X0F,0X28,0X3F,0X00,0X57,0X1F,0XFF
BLDCDATA 0X17~0X1E = 0X03,0XE6,0X00,0X67,0XA5,0XA2,0X26
BLDCDATA 0X20~0X25 = 0X5E,0X0C,0X3A,0X00,0X00,0XD1BLDCDATA 0X26~0X2B = 0XA3,0X90,0X0F,0X48,0X00,0X0C
Motor_state_poll : 0x26
BLDCDATA 0X00~0X03 = 0X40,0X81,0X80,0XF0
BLDCDATA 0X10~0X16 = 0X0F,0X3F,0XFF,0X00,0X28,0X1F,0XFF
BLDCDATA 0X17~0X1E = 0X03,0XFE,0X00,0X67,0XA0,0XA3,0X26
BLDCDATA 0X20~0X25 = 0X5E,0X0C,0X3A,0X00,0X00,0XD1BLDCDATA 0X26~0X2B = 0XA3,0X90,0X0F,0X48,0X00,0X0C
Cherry Zhou：
您好，我们已收到您的问题并升级到英文论坛寻求帮助，如有答复将尽快回复您。谢谢！
,
Cherry Zhou：
您好，
根据电机的datasheet，相位到中心抽头电阻为2.25欧，BEMF 常数 Kt 为6.28mV/Hz。 您给出的设置中，R 和 KT 分别为4.33欧和11 mV/Hz。 您能否将其更改为2.25欧和6.28mV/Hz？ 此外请参考以下链接的app note，试着在更高速度下调整lead time？
https://www.ti.com/lit/pdf/slaa561
,
? ??：
你好，感谢您的回复
对于这两个值的计算方法有点疑问，
1.马达是星型链接，电阻值也要除以2吗？
2.10800/(60/6) = 1080//目标转速10800 r/min；6=12 pole/2
kt = 12V/1080 = 11.1 mv/hz
不是很清楚6.28是怎么计算的？能说一下吗？
,
Cherry Zhou：
好的我们跟进给工程师确认下哈，因这一周为感恩节假期，英文论坛的答复会相对较慢一些。给您带来的不便敬请谅解！
,
Cherry Zhou：
您好，
? ?? 说：1.马达是星型链接，电阻值也要除以2吗？
是的，也需要。
? ?? 说：
2.10800/(60/6) = 1080//目标转速10800 r/min；6=12 pole/2
kt = 12V/1080 = 11.1 mv/hz
不是很清楚6.28是怎么计算的？能说一下吗？
对于 KT 计算，假设当电机以10800rpm 转速旋转时 BEMF 电压为12V。 您给出的数据表中没有提到在最大速度下生成的 BEMF 电压为12V。 12V 是可施加到电机相位的最大电压。 工程师的计算是基于以下 E2E FAQ中的公式-将 mNm/A 转换为 mV/Hz：
e2e.ti.com/…/faq-drv10x-selection-guide
