DRV8329AEVM: By using F2800137 Launchpad

#define USER_MOTOR1_Rs_Ohm (0.0985067934f)
#define USER_MOTOR1_Ls_d_H (9.99999997e-07f)
#define USER_MOTOR1_Ls_q_H (9.99999997e-07f)
#define USER_MOTOR1_RATED_FLUX_VpHz (0.00455222838f)

Hi Michael,

Thank you for posting to the Motor Driver's forum!

When you run this lab, please make sure to run Levels 1, 2, and 3 first before running Level 4 to make sure that the kits are setup correctly.

Best,

~Alicia

我們要如何透過PWM來控制轉速? 

Hi Michael,

In the Universal Motor Control Project and Lab, you can set the speed of the motor by setting the variable shown below:

Best,

~Alicia

Thanks for your reply.

I would like to use outside PWM source to control the motor speed, how should I implement ?

Hi Michael,

The DRV8329A allows the use of 6x PWM mode, as shown below, which can be used to drive the motor:

The speed of the motor can be adjusted by increasing/decreasing the duty cycle.

Best,

~Alicia

Sorry for my poor information.

Actually, my condition is: Flight Control (PWM output) -> TI F2800137 -> DRV8329A -> Motor

Therefore,  I would like to use outside PWM source for F2800137, then control the DRV8329A

Hi Michael,

Would you be able to provide a functional block diagram of your system? 

Also could you clarify what the PWM output is being generated from?

Best,

~Alicia

Draft block diagram for your reference

Hi Michael,

Thank you for the block diagram, I will aim to provide feedback soon.

Best,

~Alicia

If there is any update, please inform me, thanks.

Hi Michael,

I am going to forward this over to the C2000 group as your questions seem to involve the Universal Motor Control Project and Lab.

Best,

~Alicia

What's rated current and speed of your ESC motor? Did you change anything on the DRV8329A board? What the CSA gain do you set on the board and in the project? What value is the USER_M1_ADC_FULL_SCALE_CURRENT_A in the user_mtr1.h file?

The DRV8329A needs to use the single shunt current sensing algorithm. Currently. The sensorless-FOC with single shunt is not very suitable for a low-inductance ESC motor with a higher switching frequency, especially run the ESC motor at a low speed since the current is too small for the DRV8329A board.