S32KのトピックRe: MCSPTE1AK144 kit with Encoder

MCSPTE1AK144 kit with Encoder

Canberk — Wed, 14 Dec 2022 10:40:45 GMT

I have got MCSPTE1AK144 development kit and I want to use bldc motor with encoder. I changed encoder macro to 1 just like application note said but when ı run the program bldc motor didn't spin.

I tried to understand the pospe_sensor.c file and I saw there was two variable named MOTOR_PP_GAIN and MOTOR_PP_SHIFT that effects position value. What are those values, do I have to changed them or my problem could be something else?

thanks

I shared the screenshots of the variables that I talked about

Re: MCSPTE1AK144 kit with Encoder

_Leo_ — Fri, 16 Dec 2022 01:14:24 GMT

Hi @Canberk,

Thank you so much for your interest in our products and for using our community.

Just to be clear, are you basing it on the MCSPTE1AK144_PMSM_FOC_xSh example? Because in the example MCSPTE1AK144_BLDC_6Step is not implemented with an encoder.

I think the screenshots you are talking about were not attached, could you please attach them again?

Have a nice day!

Re: MCSPTE1AK144 kit with Encoder

Canberk — Mon, 19 Dec 2022 05:16:52 GMT

First off all thanks for answering and yes I am basing it on the MCSPTE1AK144_PMSM_FOC_2Sh example.

Re: MCSPTE1AK144 kit with Encoder

_Leo_ — Thu, 22 Dec 2022 01:29:41 GMT

Hi again @Canberk,

To use the MCSPTE1AK144 with encoder you must follow the Getting Started with the S32K144 BLDC/PMSM Development Kit.

In the Plug It In section, place DEVKIT-MOTORGD jumpers J9, J10, J11 to position 1-2 for PMSM application (Because only for PMSM application is the encoder function available, in this case MCSPTE1AK144_PMSM_FOC_2Sh).

In my case I left J8 open to establish a 5V voltage level for the encoder.

Connect the encoder to JP1 as shown in the following figure:

In the Build section, before clean, build, debug and load, change the ENCODER macro to 1 in the main source code.

Then in FreeMASTER, set the resolution of your encoder in the Sensors tab.

Finally, Start application and Set speed in the App Control tab, then in the Project Tree/Encoder Sensor/Speed you will be able to visualize the Speed Encoder in the dynamic graph.

Regarding the MOTOR_PP_GAIN and MOTOR_PP_SHIFT macros, you don't need to change them, since these are motor parameters, not encoder parameters.

Hope it helps you!

Have a nice day!