MCF8316AEVM: MCF8316使用时，电机如何正常运行？需要注意什么？

lian xu

Prodigy 20 points

Part Number: MCF8316AEVM

问题1：如何使用MPET，我按照如图步骤进行MPET自动提取，但不知从哪里看提取成功，又如何相关写入寄存器。

问题2：为什么通过I2C控制速度后，运行了，但又会自动停止，而且不报错？停止后电流降低，有时候也不降低？

2 年多前

0 Cherry Zhou 2 年多前

TI__Guru* 81380 points

您好，

能否分享下您参考的以上截图的出处？

0 lian xu 2 年多前

Prodigy 20 points

www.ti.com.cn/.../zhcu983a.pdf

0 Cherry Zhou 2 年多前回复 lian xu

TI__Guru* 81380 points

好的，您的问题我们需要升级到英文论坛看下，有答复尽快给到您。

0 Cherry Zhou 2 年多前回复 Cherry Zhou

TI__Guru* 81380 points

您好，

lian xu 说：
问题1：如何使用MPET，我按照如图步骤进行MPET自动提取，但不知从哪里看提取成功，又如何相关写入寄存器。

MPET 遵循下图中的逻辑：

所以您可以看到您在第4.3.1节中执行的步骤手动命令 MPET 启动并完成每个阶段。假设您在使用 GUI，您可以判断 MPET 何时完成，来查看相关常量在寄存器映射中是否具有非零值(例如 CLOSED_LOOP2寄存器中的 MOTOR_RES 和 MOTOR_IND)。此外，电机应停止旋转(如果目标速度为零)。

要将 MPET 值写入相关寄存器，请将 ALGO_CTRL2寄存器中的 MPET_WRITE_SHADW 设置为1。为了保存这些值以使它们在电源循环后出现，随后单击"Write to EEPROM"。

lian xu 说：
问题2：为什么通过I2C控制速度后，运行了，但又会自动停止，而且不报错？停止后电流降低，有时候也不降低？

在在电机运行期间，是否enable了任何 Auto Read 按钮？该问题可能与以下FAQ中的issue8 相关：

https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1066777/faq-production-device-information

该问题可以通过在运行期间不读取寄存器来避免。

0 lian xu 2 年多前

Prodigy 20 points

你好，我现在存在的问题是：
1.用I2C控制速度有时候不启动，有时候能启动，但启动还分两种，一种正常启动，一种启动大电流就停止？
2.输入电压在12v时还有可能启动，在24v的时候就不启动，但是电流还在升，电机有响声，就是不转？
帮我看看配置有什么问题？谢谢！

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