DRV8353RS-EVM: proj_lab02b does not identifies motor.

Hey Tiago,

Thank you for your question. We will aim to provide a response shortly.

Best,
Akshay

Can you try to run in lab01b/c to check if the PWM outputs are right or current/voltage sensing signals are right?

Can you check if the sensing dc bus voltage is correct within CCS?

Hi Yanming

This is the behaviour of my EVM running lab01b:

It starts with the expressions set as shown below.

When Flag_enableSys and Flag_Run_Identify are enabled, CtrlState changes from CTRL_State_Idle to CTRL_State_OffLine at a first moment. And this can be seen in each one of MOTA/B/C.

 

Then, I think less than two seconds before Flag_enableSys and Flag_Run_Identify are enabled, both CtrlState and EstState changes to CTRL_State_OnLine and EST_State_OnLine respectively. At this moment the motor tries to spin but this don't last more than two seconds.
If I try to repeat the lab (I mean, desabling and enabling Flag_enableSys and Flag_Run_Identify), the motor doesn't spin at all. I have to stop the debug session and start it again.

The sensed dc voltage seems to be good.



Thanks in advance

[FAQ] BOOSTXL-DRV8323RS and BOOSTXL-DRV8323RH InstaSPIN and MotorWare support

[FAQ] DRV8353RS-EVM with InstaSPIN and MotorWare support

Try to tune the following parameters for running the lab01b according to your motor.

#define USER_MOTOR_FREQ_LOW                                (10.0)                        // Hz - suggested to set to 10% of rated motor frequency

#define USER_MOTOR_FREQ_HIGH                                      (100.0)                        // Hz - suggested to set to 100% of rated motor frequency

#define USER_MOTOR_FREQ_MAX                                (120.0)                        // Hz - suggested to set to 120% of rated motor frequency

#define USER_MOTOR_VOLT_MIN                                (3.0)                        // Volt - suggested to set to 15% of rated motor voltage

#define USER_MOTOR_VOLT_MAX                                (18.0)                        // Volt - suggested to set to 100% of rated motor voltage

For running the lan02b, please try to tune the identification variables in the file of the user header file according to the motor.  And don't add any load on the motor when run this lab for motor parameters identification, to ensure that the motor spins smoothly during Flux measurement and Ls identification states.

#define USER_MOTOR1_RES_EST_CURRENT      (1.5f)                               // A -  10-30% of rated current of the motor

#define USER_MOTOR1_IND_EST_CURRENT      (-1.0f)                             // A -  10-30% of rated current of the motor,  just enough to enable rotation

#define USER_MOTOR1_MAX_CURRENT            (5.0f)                               // A -  30~150%  of rated current of the motor

#define USER_MOTOR1_FLUX_EST_FREQ_Hz     (40.0f)                            // Hz - 10~30% rated frequency of the motor

Yanming Luo said:

[FAQ] DRV8353RS-EVM with InstaSPIN and MotorWare support

From here is where I get the code to test my EVM. I mentioned this in my first post. 

Yanming Luo said:

Try to tune the following parameters for running the lab01b according to your motor.

I've already tuned this parameters. Still having the same issue.

Tiago Monteiro said:

I've already tuned this parameters. Still having the same issue.

Keep tuning the v/f profile as mentioned above according to your motor. Don't add any load to the motor in lab01b and lab01c, this lab is just used to verify the board.

You may check if the current and voltage sensing without connecting the motor first in lab01b, and then connecting the motor to check these sensing signals.

Since you are using the TI EVM, you may try to run the lab02b, but tuning the identification variables as mentioned above after run the lab01b and lab01c successfully. 

I've tunned the v/f profile as you said. Now I can run lab01b and c. Lab01b with some motor noises that I understand are normal and lab01c at low rpm but extremely quiet.
However, I'm still having the same issue at lab02b that I mentioned here:

Tiago Monteiro said:

When gMotorVars.Flag_enableSys and gMotorVars.Flag_Run_Identify are set to 1 I get this values:

•     gMotorVars.UserErrorCode = USER_ErrorCode_NoError
•     gMotorVars.CtrlState = CTRL_State_OffLine
•     gMotorVars.EstState = EST_State_Idle

Can you check the angle and speed from the FAST estimator in lab01c? The values of these two variables should be close to the values from the open-loop control in lab01c.

Alicia's response to this post solves my issue:
https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1189832/drv8353rs-evm-ccs-project-file-corresponding-to-default-appprogram-out-and-more-example-projects/4483809?tisearch=e2e-sitesearch&keymatch=drv8353rs%252525252525252520gui#4483809

The sw that she provides in answer 1 works fine. I'll see if I can continue from here with my project.
Thanks