Make Life Accessible - Motor Suite Test - blog 8

RE: Make Life Accessible - Motor Suite Test - blog 8

stevesmythe — Mon, 11 Feb 2019 16:51:54 GMT

Hi Doug

I have a favour to ask you. I am roadtesting the FRDM-KV31, LVPMSM motor controller and Linix motor. After reading your design challenge blog, and downloading various documents, it is clear that getting these components to work with the Kinetis Motor Suite will depend on exactly the right combination of obsolete software. I also found that the KV31F boards come with different firmware, depending on their age.

To save me hours of pain (like the 33+ hours you experienced), it would be great if you could firstly check what your KV31F board enumerates as when you plug it into a PC. This assumes a) you still have it, b) you can still find it!

It should either show up as MBED <drive letter> , or FRDM-KV31F <drive letter>.

Next, can you remember or have you a note of, which versions of:

Kinetis Motor Suite
Kinetis SDK

worked with Kinetis Design Studio v3.0 and the hardware you were sent? I appreciate that almost three years have elapsed since this project.

Any answers at all would help narrow down what I need! I asked NXP for some help but they said that they "will no longer be licensing" KMS and pointed me towards MCUXpresso (without KMS). I can do this, but I'd rather have a play with KMS first.

Thanks in anticipation.

Steve

RE: Make Life Accessible - Motor Suite Test - blog 8

DAB — Mon, 30 May 2016 19:06:50 GMT

Nice update Douglas.

I am curious about your low speed issues. Is it a case of needing the right sequence and is that an issue for how you can load the motor?

Have you looked at the similarities with the TI Instaspin approach?

Thanks

DAB

RE: Make Life Accessible - Motor Suite Test - blog 8

kulky64 — Mon, 30 May 2016 12:09:18 GMT

How do you think will Hall effect sensors help you at lower speeds? The state of the Hall effect sensors changes every 60 degrees of electrical revolution. This is of little help to FOC algorithm. They may help you if you are using trapezoidal control as back-EMF zero crossing detection is not reliable at low speeds, but FOC algorithm will probably use some other means of sensorless rotor position estimation.