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MCT8316A: The motor is driven with a high resistance torque and overspeed occurs when held in position

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Part Number: MCT8316A

Hi team,

Here's an issue from the customer may need your help:

In open loop, drive the motor to do a finger-grabbing action. When the resistance torque is high, the motor speed is zero, and the development board incorrectly reports "Abnormal Speed", causing the motor to report errors frequently and thus no longer drive the torque. At the same time, changing the chip parameters removes the "Abnormal Speed" error and the motor cannot be driven.

How to solve this problem to guarantee that the motor will continue to maintain the drive torque when the resistance torque speed is zero? 

https://e2echina.ti.com/cfs-file/__key/communityserver-discussions-components-files/121/20221024_5F00_open.rar

Could you help check this case? Thanks.

Best Regards,

Cherry


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