I have spent the last days evaluating and reviewing the XMC FOC sensorless libraries for an ebike solution proof-of-concept.
Here I expose certain thoughts and questions that came up...
- I have noticed that the last version of the library (4.2.8) is provided at the DAVE repos as as pre-compiled library without chance to access the source code.
However I saw that previous versions are provided open-sourced with only some modules pre-compiled (like the PLL position estimator).
This implies certain restrictions when developing on-top solutions. Is the library offered somewhere open-source or at least partially open-sourced (like it used to be)? Would it be possible to get such code under request?
- Having a position feedback over Hall sensors might be required/interesting for certain applications. It is the case for my application. However, with this pre-compiled FOC library I am not even able to try to include such modification on my own.
With previous versions it was possible for developers to include and evaluate such functionalities. Is there really no way now to give a try to a Hall sensored self-implementation?
- Previous versions have a comprehensive documentation. For the latest version all the documentation is a brief Help in DAVE which is somehow poor and certainly misleading in some cases.
No plan for an updated further documentation of the library?
- There are certain unstable and undesired behaviors of the library that would require in-depth analysis and debugging before going into an end-product, therefore my need of having the library code. See for example the video attached.
In the video I am running the motor under torque control at a constant torque and maximum controller output of 50%. It can be observed how the motor reacts to an opposite load (my fingers) differently in 2 consecutive attempts.
The first time, the motor slows down until stopped and after releasing the load, the motor resumes spinning normally (this is how it should be). The second time, the motor slows down until stopped and remains stall (this should not be).
Am I very wrong about this?
I hope someone find this thoughts interesting and can help me out with my questions.
Thanks for reading and all the best.
Here I expose certain thoughts and questions that came up...
- I have noticed that the last version of the library (4.2.8) is provided at the DAVE repos as as pre-compiled library without chance to access the source code.
However I saw that previous versions are provided open-sourced with only some modules pre-compiled (like the PLL position estimator).
This implies certain restrictions when developing on-top solutions. Is the library offered somewhere open-source or at least partially open-sourced (like it used to be)? Would it be possible to get such code under request?
- Having a position feedback over Hall sensors might be required/interesting for certain applications. It is the case for my application. However, with this pre-compiled FOC library I am not even able to try to include such modification on my own.
With previous versions it was possible for developers to include and evaluate such functionalities. Is there really no way now to give a try to a Hall sensored self-implementation?
- Previous versions have a comprehensive documentation. For the latest version all the documentation is a brief Help in DAVE which is somehow poor and certainly misleading in some cases.
No plan for an updated further documentation of the library?
- There are certain unstable and undesired behaviors of the library that would require in-depth analysis and debugging before going into an end-product, therefore my need of having the library code. See for example the video attached.
In the video I am running the motor under torque control at a constant torque and maximum controller output of 50%. It can be observed how the motor reacts to an opposite load (my fingers) differently in 2 consecutive attempts.
The first time, the motor slows down until stopped and after releasing the load, the motor resumes spinning normally (this is how it should be). The second time, the motor slows down until stopped and remains stall (this should not be).
Am I very wrong about this?
I hope someone find this thoughts interesting and can help me out with my questions.
Thanks for reading and all the best.