From ed31ac07a5940eca609e09c1bdb5a4d00ed0d39a Mon Sep 17 00:00:00 2001 From: EmanuelFeru Date: Thu, 12 Dec 2019 23:52:07 +0100 Subject: [PATCH] Update README.md --- README.md | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/README.md b/README.md index 0f7924c..9b4c5b0 100644 --- a/README.md +++ b/README.md @@ -52,15 +52,16 @@ Demo videos: --- ## General Notes - The C code for the controller was auto-code generated using [Matlab/Simulink](https://nl.mathworks.com/solutions/embedded-code-generation.html) from a model which I developed from scratch specifically for hoverboard control. For more details regarding the working principle of the controller please consult the [Matlab/Simulink model](https://github.com/EmanuelFeru/hoverboard-firmware-hack-FOC/tree/master/01_Matlab). - - A [webview](https://github.com/EmanuelFeru/hoverboard-firmware-hack-FOC/tree/master/01_Matlab/BLDC_controller_ert_rtw/html/webview) was created, so Matlab/Simulink installation is not needed, unless you want to regenerate the code + - A [webview](https://github.com/EmanuelFeru/hoverboard-firmware-hack-FOC/tree/master/01_Matlab/BLDC_controller_ert_rtw/html/webview) was created, so Matlab/Simulink installation is not needed, unless you want to regenerate the code. The webview is an html page that can be opened with browsers like: Microsoft Internet Explorer or Microsoft Edge. -### Field weakening +### Field Weakening / Phase Advance - By default the Field weakening is disabled. You can enable it in config.h file by setting the FIELD_WEAK_ENA = 1 - - In BLDC_controller_data.c you can find the field weakening Map as a function of Input target: MAP = id_fieldWeak_M1, XAXIS = r_fieldWeak_XA - - The default calibration was experimentally calibrated to my particular needs - - If you re-calibrate the field weakening map please take all the safety measures! The motors can spin very fast! - - During the recalibration make sure the values in XAXIS are equally spaced for a correct Map interpolation. + - The Field Weakening is a linear interpolation from 0 to FIELD_WEAK_MAX or PHASE_ADV_MAX (depeding if FOC or SIN is selected, respectively) + - The Field Weakening starts engaging at FIELD_WEAK_LO and reaches the maximum value at FIELD_WEAK_HI + - The figure below shows different possible calibrations for Field Weakening / Phase Advance + ![Field Weakening](https://github.com/EmanuelFeru/hoverboard-firmware-hack-FOC/blob/master/docs/pictures/FieldWeakening.png) + - If you re-calibrate the Field Weakening please take all the safety measures! The motors can spin very fast! ### Parameters