STM32 MCUs Motor control

My setup:NUCLEO-F446RE and STEVAL-IPM15B"ST Motor Control Workbench" "Power Stage - Current Sensing" settings:Shunt resistors value: 0.04 Ohm (also on PCB, but User Manual um-2014-1500-... says 0.08 ohm, another mismatch)Amplifying network gain: 2.10T-rise: 1500T-noise: 2000These values are in "power_stage_parameters.h" too.However, Motor Pilot in "Rev-up" tab, "Phases configuration" -> click "Read all", reads as follows:RShunt: 0.0050 ohmOPAMP Gain: 24Vref: 3.3 VThat effectively lowers down current/torque about 30% in rev-up phase.Is it a bug or a feature? Motor Pilot does not read RShunt and gain values from the firmware?Thank you.

hi~We are testing the motor development kit.MCU keeps dying at "steval-ctm010v1".220V in, RS232 cable is connected.The MCU dies when the debugger is connected.The debugger connection was not possible, so I connected the C82 capacitor NRST pin to the debugger reset pin.The debugger connection was not possible, and RS232 communication was not possible, so I checked the MCU and found that it was hot and dead.What is the problem?Please reply as soon as possible.Thank you.

Hello There,I am currently work on 6 - Step (Trapezoidal) Control and have developed my software with Nucleo - F302R8. I have a low inductance(23uH) bldc motor. When I've tested this motor with my software, current signal doesn't look right. Also, we have tested bldc motor with another motor driver and signal is same. What can be the reason of this signal?Yellow -> Dc_Bus - PhasePurple -> Phase CurrentPWM at 50% duty cycle PWM at 100% duty cycle

Hello!In what units is the current expressed in ST Motor pilot? And how to convert this current units to amperes in ST Motor Pilot?

I have a steval-dpsllck1 board.If I want to initialize due to a program problem in the board, if I use the Full Bridge 3 kW LLC STM32F334x V1.6.BIN file provided by ST, is it initialized for normal operation?

Hello - I'm wondering if the STSPIN32G4 can be utilized to drive a brushed motor rather than a three-phase brushless motor that it is marketed for. Alternatively, are there any chips within STMicro that are meant for brushed motors that have a combined MCU and gate driver like the STSPIN32G4?Thank you!-Shane

We are working on a project to control a PMSM servo motor with Encoder and Hall sensors. We have custom built a board with STM32F407 but I am not able to find any example code for sensored PMSM motor control. The motor control SDK does not seem to support this device - also, the SDK does not seem to support custom boards. The requirement is urgent....

Hello, I try to run PMSM motor with Steval-HKI001V2 board. Unfortunately, this board does not support motor profiler software, so I measured the motor parameters manually.I watched all the Motor Control online video courses and configured the drive parameters, sensors, and start-up parameters. After many days of trying to spin the motor with different start-up parameters I have achieved the following result: I'm able to align the rotor and spin it smoothly to the final ramp speed of 700rpm but then the motor just stops with "start-up" failure. As I noticed in FAQ start-up failure often occurs when the current is too low, but after increasing the current to 8A, the motor is clogging near 600rpm and then a "speed feedback" error occurs.What could be the reason for such behavior?I attach .stmcx project file.My motor parameters:3 pole pairs2400 rpm16A current205V DC VoltageRs = 0,6 OhmLs = 0,62 mHE-Emf constant = 57 V/krpm

Hi everyone! I use ST Motor pilot to control the motor. The motor reference is 354 RPM. Quantity of pole pairs is 10. Phase period must be 60 / (354 * 10) = 17 ms. But when I display the electrical phase plot, I see that the period of the phase is 136 units. What do these units mean? ms or us?

Hello - i'm new to STM32 MCU's (mostly have been using 8bit AVR's or OS based Raspberry Pi). I've been trying to implement a 6-step motor control (making everything from scratch as a learning experience). I picked TIM4 and TIM8 in a master-slave configuration, using complementary outputs of channel 1, 2 & 3 in TIM8. Everything is set so that PWM preloaded registers update happens in a commutation even, which is the TRGO of TIM4.void motor6Step_Init(TIM_HandleTypeDef* htim4, TIM_HandleTypeDef* htim8){ htim4->Instance->CCR1 = (TIM4_ARR>>2);   htim8->Instance->CCR1 = 0; htim8->Instance->CCR2 = 0; htim8->Instance->CCR3 = 0; htim8->Instance->CR1 &= ~( TIM_CR1_CEN ); htim8->Instance->CNT = 0; __HAL_TIM_ENABLE_IT(htim8, TIM_IT_UPDATE); HAL_TIMEx_ConfigCommutEvent_IT(htim8, TIM_TS_ITR2, TIM_COMMUTATION_TRGI); }   void motor6Step_Start(TIM_HandleTypeDef* htim4, TIM_HandleTypeDef* htim8){ HAL_TIM_Base_Start(htim8); HAL_TIM_OC_

(Environment)MC_SDK 5.Y.3 + STM32CubeMX 6.3.0 with HAL + IAR EWARM 8.5(Hardware)custom board based on F446RE + custom power board(3-shunt) + Low Voltage BLDC motor with Encoder(Control Mode)Speed Control(What I found)In "parameters_conversion.h", there is defined MAX_MODULE as follows:=================================================/* MMI Table Motor 1 MAX_MODULATION_100_PER_CENT */#define MAX_MODULE 32767=================================================If this 100% modulation is used, there might be some moments where low-side duty becomes close to zero (less than dead time). Then the boot capacitors might not be charged properly.Is this value still good as is or need to be modified? If modified, what would be the recommended value?And can it directly modified in "parameters_conversion.h" or by workbench tools?

Info : accepting 'gdb' connection on tcp/3333Warn : GDB connection 2 on target STM32F031C6Tx.cpu not haltedError: timed out while waiting for target haltedError executing event gdb-flash-erase-start on target STM32F031C6Tx.cpu:TARGET: STM32F031C6Tx.cpu - Not haltedError: Target not haltedError: failed erasing sectors 0 to 19Error: flash_erase returned -304Info : dropped 'gdb' connectionshutdown command invokedInfo : dropped 'gdb' connection

I am using the IHM17M1 power board which is not supported out of the box. I have it working quite well by configuring it as a custom board. However I don't know how to set the t-rise and t-noise values. I can't find any reference to them in the documentation.I also note the current sensing seems a little noisier that I think it should be, so wondered if these settings could have an effect.Thanks.

I'm a complete beginner following the motor control tutorial here:https://wiki.st.com/stm32mcu/wiki/STM32StepByStep:Getting_started_with_Motor_Control#Managing_the_programming_code_partIt tells me that this code will get my motor running. while (1) { MC_StartMotor1(); HAL_Delay(2000); MC_StopMotor1(); }Well I've followed the whole tutorial, creating a project from scratch and I think I can safely say that it doesn't do what it's supposed to do.I know the program is running as I have an LED flashing under my control each time it goes round the loop but the motor does not move. The motor is known to work. Looking at the api, this function just returns another function in mc_interface:MCI_StartMotor(MCI_Handle_t *pHandle)I do not know where this second function is supposed to get the pointer from - the wrapping function doesn't supply it. Perhaps it is initialised somewhere else - to me it looks suspect. Is it worth bothering with this tutorial or should I just get on with using m

Iam using STMotor workbench to run the BLDC motor,How to do sensorless method in STEVAL SPIN3201 board?

I am using a custom PCB based on the EVSPIN32G4 schematic and STSPIN32G4 and IRF7759 MOSFETs. Since the 10 kW motor that I try to run doesnt spin, even with 30 A current at startup, I wanted to use the board in openloop, so I changed the OPEN_LOOP_FOC in the .ioc file to true, and set startup to look like this:When I start the motor, the current in phase B rises to 350 Amp before an undervoltage error stops the motor (power supply cant keep up with current). I think if I connect a battery, the MOSFETs would burn through. switching frequency is 30 kHz and with 15 kHz I have the same issue. Current waveform is as follows:and the oscilloscope measurements CH1, yellow = Phase V highside gate,CH2, blue = Phase W lowside gateCH3, pink = Phase V lowside gateCH4 green = Phase W highside gate, all measured to groundIf someone has an explanation what goes wrong here, please give me a hint.

Hi ST and fellow struggling customers:),I am trying to to get running small 24V BLDC sensorless in-runner with STEVAL-SPIN3202 in FOC or 6 STEP .I stuck after endless attempts with downloading various older versions of all the "cubes".I am trying (for a new project) to migrate from TI's F28027F which was not the easy one to work with, but this one... No manuals, no videos, except for marketing.At the moment:I use MotorControl Workbench 5.Y.2., STM32CubeIDE 1.8.0, STM32CubeMX 6.3.0.At least this version configuration allows me to upload the project into the board.I am loading the example 6S_STEVAL3202_SL_VM.Saving it in separate location.The only changes I do: Unchecking Hall Sensors and Encoder in motor section and select Sensor-less (Observer+PLL) in Speed sensing.I click " Project Generation:I click "Update"It creates project files. Here I am a bit confused. The readme suggests "open the project in IDE". I was unable to do this.Instead, I click It opens STM32CubeMX, where I can find

I am starting a project with an X-NUCLEO-IHM01A1 and an STM32 NUCLEO F411RE board. The example project on the IHM01A1 page called "X-CUBE-SPN1" is an STM32 project, not an STM32IDE one. I'm using the F401 example inside the example project. Is there a way for me to add an .ioc file to this so that I can utilise other pins for some sensors I have? Alternatively, is it possible for me to copy the libraries used from the example into a new STM32IDE project. I'm a little confused by the file structure so I'm unsure which files I would actually need to copy over.Thanks for any help.

After working with FUL_5.Y.2, I need some of the features offered in 5.Y.3.I believe I clicked on the 5.5.3 version when downloading. Is 5.5.3 actually 5.Y.2? Or did I misclick? I did have trouble downloading, as my browser crashed and sent ~12 requests .

Hi ST community，I tried to use STM32CubeMX for motor control of sensorless PMSM. I am confused about the Speed Sensing module. There are three modes of sensorless: Observer PLL, Observer Cordic, HFI+Observer, what is the trade-off between them? HFI+Observer indicates that the firmware library is not supported. When the first two modes are used, the motor can rotate, but the effect is not good at low speed. Do you have any countermeasures? Thank you very much!​​

(Environment)MC_SDK 5.Y.3 + STM32CubeMX 6.3.0 with HAL + IAR EWARM 8.5(Hardware)custom board based on F446RE + custom power board + Low Voltage BLDC motor with Encoder(Control Mode)Speed Control(What I found)In "stm32f4xx_mc_it.c", there is TIMx_BRK_M1_IRQHandler() as follows.Notice, here MC_Scheduler() is called as commented.========================================================void TIMx_BRK_M1_IRQHandler(void){   if (LL_TIM_IsActiveFlag_BRK(PWM_Handle_M1.pParams_str->TIMx)) {   LL_TIM_ClearFlag_BRK(PWM_Handle_M1.pParams_str->TIMx);   R3_2_BRK_IRQHandler(&PWM_Handle_M1);  }  /* Systick is not executed due low priority so is necessary to call MC_Scheduler here.*/  MC_Scheduler();}========================================================(Question)Once BRK interrupt(over current) happened, we need to handle this fault immediately. While MC_Scheduler() is for normal medium task(speed controller), TSK_SafetyTask() that is for fau

STM32F405MCSDK = V5.4.5f_pwm = 10kHzHigh frequency task = 10kHzMedium frequency task = 1kHzPosition and speed = Hall (main) & STO+PLL (auxiliary)Current sensing = 3 x 3mOhm shuntsI am having a problem with very poor Id and Iq measurements when the motor hits a certain critical speed, around 650rpm mechanical with no load. Fig1 shows plots of Iq, Id, RPM, Electrical angle (hall and sensorless) and BEMF generated by printf-ing out the values in the Medium frequency task using Segger RTT. Fig2 is the same plot but zoomed in on the "good" region. Fig3 is zoomed in on the "bad" region.I have traced the transition between "good" and "bad" to when the R3_2_SetADCSampPointSectX() function in r3_2_f4xx_pwm.c stops sampling in the middle of the PWM period and uses one of the alternative schemes. Here are some of the defines that I believe are of interest here:#define TNOISE_NS        1000#define TRISE_NS       &n

STM32F405MCSDK = V5.4.5f_pwm = 10kHzHigh frequency task = 10kHzMedium frequency task = 1kHzPosition and speed = Hall (main) & STO+PLL (auxiliary)Current sensing = 3 x 3mOhm shuntsIs it possible with the MCSDK to power up the processor with the motor shaft already rotating and start the controller without the motor coming to a halt? When I try this the motor drives with a very strange noise until the motor is first stopped, after that it runs normally. I think the cause of this is that the Hall effect initialisation doesn't work correctly if the motor shaft is rotating (perhaps HALL_Clear()->HALL_init_electrical_angle() relies on the motor not rotating?).Can anyone tell me if this is the likely cause and if so, is there any way to startup the MCSDK code and run the speed/current controller if the motor shaft is already rotating at power up?

Hi good day, i have a fanuc AC PMSM 140v, 6NM, 4.6A, 1kw, 2000ppri see the tool hardware and think what the follow kit is convenient:1.- Nucleo G431RB2.- X-nucleo IHM09M13.- STEVAL-IPM30Bbut i see MCSDK v6 no support this hardware, then I ask some general questions because i am just starting in ST motor control although i already have some experience in PMSM with other micros.the configuration of the parameters of the motor Fanuc and the hardware follow still simple for the v6?. is necesary i migrate a some version 5.x and what version ?.this FOC library can control IPMSM and SPMSM?, how the MCSDK detect or recognize the type of motor?The field alignment of rotor and stator in the start is made always?, this need UVW channel encoder for alignment field,? why i see servodrivers PMSM what no make this movement initial of alignmet fieldThanks

..