DRV10983-Q1: enlarging the accelerated speed

user5907944

Prodigy 100 points

Part Number: DRV10983-Q1

Hi Team，

I want to enlarge the motor speed from 600RPM to 1200RPM, But the acceleration is very low.

How can i to configure the DRV10983-Q parameters can Increase acceleration？Thanks

over 6 years ago

0 Sanmesh Udhayakumar over 6 years ago

TI__Expert 6065 points

Please refer to section 8.4.6.5 Closed-Loop Accelerate in the datasheet https://www.ti.com/lit/ds/symlink/drv10983-q1.pdf

0 user5907944 over 6 years ago in reply to Sanmesh Udhayakumar

Prodigy 100 points

Hi Sanmesh,

We have already configured the parameter.

But It still takes more than 10S that motor speed from 600RPM to 1200RPM.

0 Sanmesh Udhayakumar over 6 years ago in reply to user5907944

TI__Expert 6065 points

You have entered 0 into phase to center tap resistance and BEMF constant. I dont think the DRV10983-q1 will drive the motor properly with these settings. PLease follow this tuning guide http://www.ti.com/lit/ug/slvuav9/slvuav9.pdf

0 user5907944 over 6 years ago in reply to Sanmesh Udhayakumar

Prodigy 100 points

It is GUI DEMO MODE!

And the DRV10983-q1 will drive the motor.The problem is that the acceleration is too low.Thanks!

0 Sanmesh Udhayakumar over 6 years ago in reply to user5907944

TI__Expert 6065 points

In order for me to debug this, can you please send me your full settings, using either screen shots of all the actual settings or a csv file of the settings through pressing the save button on the bottom right of the Basic Settings Tab of the GUI?

0 user5907944 over 6 years ago in reply to Sanmesh Udhayakumar

Prodigy 100 points

Please kindly help, Million thanks.

config.zip

0 Sanmesh Udhayakumar over 6 years ago in reply to user5907944

TI__Expert 6065 points

1) try increasing open to closed loop threshold from 4.8Hz to 25.6Hz. What I think may be happening is that the closed loop threshold is so low and the open loop acceleration is so fast that the driver gets improper info about motor position and acceleration is abnormally slow.

2) Try doubling pwm frequency.

0 Sanmesh Udhayakumar over 6 years ago in reply to Sanmesh Udhayakumar

TI__Expert 6065 points

Any followup needed on this?

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DRV10983-Q1: enlarging the accelerated speed