infineon / tle9879-bldc-shield

TLE9879-BLDC-Shield

Arduino library for Infineon's BLDC Shield with TLE9879.

Summary

The BLDC shield is a small evaluation board equipped with the TLE9879 to use with Arduino. Up to 4 boards can be stacked ontop of each other to control 4 BLDC motors indepedently. Each shield can supply up to 10 A load current. The implemented integrated TLE9879 is a inteligent B6 MOSFET driver designed especially for automotive motion control applications such as wiper, engine cooling fan or Fuel pump.

Key Features and Benefits

• 32-bit Arm® Cortex® -M3 core at up to 40 MHz
• Single power supply from 5.5 V to 28 V
• FLASH up to 128 KB, RAM up to 6 KB
• 1x LIN transceiver
• 2x UART, 2x SSC
• 3-phase bridge driver with charge pump and PWM generator
• 1x low-side shunt current sense amplifier
• 1x 10-bit ADC/8 ch and 1x 8-bit ADC/10 ch
• 10x 16-bit timer, 1x 24 bit timer
• Temperature Range-GRADE1 TJ: -40 °C up to 150 °C
• Temperature Range-GRADE0 TJ: -40 °C up to 175 °C
• Ultra compact application footprint with VQFN-48 packages

Target Applications:

• Wiper
• Engine cooling fan
• Auxillary water pump
• Fuel pump
• Oil pump

Examples

Three examples are available to be used with the TLE9879 BLDC shield.

• Blinky
• Single motor
• Multiple motor

A documentation of the API for Arduino can be found in chapter 4 of the user manual.

tle9879-bldc-shield's Issues

Adding an approximate RPM Reading of the motor attached

There is a lack of actual motor RPM readings.

Utilizing the board capability of FOC control, I assume there is access to an approximate RPM that the motor attached is spinning at. This would allow the user to see any differences in the set RPM and the actual RPM. Enabling additional safety features, loop-control etc.

I noticed a getMotorspeed function within the code, however this seems to simply return the RPM set by the user and not the actual RPM of the motor. Furthermore, accessing this function for Arduino should be added to the public class.

Proposed Solution: adding a function that communicates with the infineon chip that should have the information needed to calculate an approximate rpm.

Alternative solution: adding an rpm reader to the board.

motors take forever to start in hall mode

Hello,

I hope you are doing well, I am running a hub brushless motor at 12V and I need to move at very low speeds. Obviously Hall Mode is the only way to achieve that. But I am running into a major problem, the lower I set the speed the speed the more time it takes for the motor to start. At the lowest speed (any lower the motors don't start at all) it took the motor a full 53 second to start turning. I tried adjusting the following parameters: HALL_PWM_FREQ, HALL_INIT_DUTY, HALL_DELAY_MINSPEED but it did not help at all. It feels like a current issue where there is a large current ramp until the amount needed to overcome the torque load is reached.

please help its a little urgent

First steps

Hi there,

for a first bginning the support code is to less. Can you update the repository with more examples on how to use the board with the arduino IDE, please ?!

It would be fine to get some impressions of:

• how to read the current over the shunt
• how to read hall sensors
• how to use the different modes, by example (for example: how set position and velocity)
• how to establish a closed loop control (and why is there no D-term for internal control in the header file? More advanced controller would be also nice (LQR, H_inf, Force_Torque).)

Please note, my knowledge of assembly programming is rusty, but I know, there could be more information of each registers and address. Never the less, I would guess, the most people don't know how to handle this in C. Proper functions and method descriptions woud be fine: What goes in? What goes out? What is the method doing?

All in all, commented arduino code (as you can see for olimex modules) would be nice, and make the shields more useable than a static help file.

Hall mode having problems?

Hi Guys,

I have read decently on the documentation of TLE9879QXA40 and decided to write some code to control the motor. Happily, I can run the motor in FOC & BEMF mode. However, It does not move in HALL mode. The motor just gives an initial jerk when we send 'startMotor' command. Following is the code for HALL mode.

// Include the Shield library to your Arduino project
#include "TLE9879_Group.h"

#define BOARD1 1

// Declare Shield group object
TLE9879_Group *shields;

void setup()
{
// Initialize the Shield group object with the
// number of Shields in the stack
shields = new TLE9879_Group(1);

// Set the desired mode (FOC, HALL, BEMF)
// shields->setMode(BEMF);

/*
shields->setMode(FOC);
shields->setParameter(FOC_START_ACCEL, 1);
*/

// /*
shields->setMode(HALL, BOARD1);
shields->setParameter(HALL_INIT_DUTY, 30, BOARD1);
shields->setParameter(HALL_POLE_PAIRS, 4, BOARD1);
shields->setParameter(HALL_SPEED_KP,500, BOARD1);
shields->setParameter(HALL_SPEED_KI,100, BOARD1);
// shields->setParameter(HALL_INPUT_A,0, BOARD1);
// shields->setParameter(HALL_INPUT_B,1, BOARD1);
// shields->setParameter(HALL_INPUT_C,2, BOARD1);
// */

// Set the desired motor speed (RPM)
shields->setMotorSpeed(2000, BOARD1);
/*
You might have to adjust the motor parameters,
in case the motor does not run properly.
*/
// Start the motor and let it run for 5 seconds,
// then stop the motor
shields->setMotorMode(START_MOTOR, BOARD1);
delay(10000);
shields->setMotorMode(STOP_MOTOR, BOARD1);
}

void loop()
{
}

My motor is 4 pole and is an BLDC. Already checked the hall sensor connections many times with the shield pins. I would be happy to answer more questions, if any.