STM32 MCUs Motor control

Hello everyone,I am encountering an over-current issue with the B-G431B-ESC1 when attempting to use position control with a quadrature encoder. Here's what I've done so far:Steps I Have Taken:Motor Profiler:I uploaded the Motor Profiler firmware and ran the profiler to obtain the motor parameters. The parameters from the profiler are as follows:Motor Parameters:Hardware Family: MOTORLabel: BDUAV C4250Description: BDUAV C4250 560KvPole Pairs: 7Nominal Current: 40 ANominal DC Voltage: 24 VStator Resistance (Rs): 0.1 ΩStator Inductance (Ls): 0.02 HMagnetic Structure: Surface Mount Permanent Magnet Synchronous Motor (SM-PMSM)Back EMF Constant (BEmf): 1.53 V·s/radInertia: 4.44 (unit depends on context, often kg·m² or g·cm²)Friction: 3.63 (unit depends on context)Max Rated Speed: 6020 RPMQuadrature Encoder Details:Pulses Per Mechanical Revolution: 2048Index Pin: PresentCompatibility:FOC (Field Oriented Control)SixStep ControlMotor ID: BDUAV C4250MC Workbench Configuration:I created a new pro

Hi all,I am using the STSPIN32G0252Q chip on a custom board (implements 3-shunt current sensing and back-EMF measurement, alongside the required drive features). I have designed the board in the MC Workbench, and have manually profiled the motor I am using, as the motor pilot tool doesn't support the Cortex-M0+ range.However I am finding it difficult to know where to start with actually implementing the code generated by the workbench/CubeMX; I can see that all of the control functionality is present, but there doesn't seem to be any documentation on how to actually run a motor using just API/HAL calls, instead of using the motor pilot. I have read the SDK documentation, but while this lists all of the functions and control algorithms it doesn't seem to show what a simple implementation loop would look like. Worse still, there seems to be some conflicting information about what each function does (e.g., whether the MC_StartMotor function needs a speed/torque ramp pre-programmed or not)

Hi STM team,I am currently evaluating hardware solutions for a 64 kW BLDC motor control system in a VTOL (Vertical Take-Off and Landing) aerospace application. The project demands high safety assurance and performance, targeting DO-178C DAL-B or higher compliance.We are seeking a motor control IC or microcontroller solution with the following characteristics:Suitable for safety-critical motor control, including DAL-B system architectureCapable of Field-Oriented Control (FOC) for high-power BLDC/PMSM motorsSupport for PWM-ADC synchronization, encoder/sensor less feedback, and high-frequency switchingProven or qualified RTOS/toolchain support for avionics or DO-178C environmentsAvailable reference designs, libraries, or model-based development support (e.g., Simulink auto-code generation)It would be greatly helpful if you could recommend:Suitable ICs or families for this applicationMotor control development kits or demo boardsFunctional safety certification

Dear STM Community,We are currently evaluating motor controllers for a 48V BLDC motor application and have identified the STSPIN32F0B, which features an internal gate driver, as a potential candidate.Before proceeding further, we would like to confirm whether this controller is SIL (Safety Integrity Level) compliant, as our application requires adherence to SIL standards.Additionally, we would appreciate clarification on a general point:Do motor controllers typically fall under SIL compliance requirements, or is this dependent on specific use cases or certifications?Furthermore, if the STSPIN32F0B is not SIL-compliant, we would be grateful if you could suggest any SIL-compliant motor controllers suitable for 48V BLDC motor control applications.Your insights and any supporting documentation would be highly appreciated to help guide our evaluation and selection process.Thank you in advance for your support. Regards,Loganathan.R

I have two issues Project details:a. Custom board.b. MCSDK 6.2.0, FOC, 15HKz , 3 shunt topology , BLDC motor,c. Motor pilot not configuredIssue1- I have calculated the Hall placement angle as mentioned in the documentation in one direction (clockwise). The motor smoothly starts also under loaded conditions, there are no issues. But when i try to spin in reverse direction with negative Iq under the same load it does not start. I plotted Ia, I b using cube monitorMotor does not start in reverse direction.Motor runs smoothly without problem in forward direction. How do i debug the issue?Issue2: Very much related to the above to find the root cause i have tried under no load in another setup using another motorI have followed hall placement angle procedure in one direction (clockwise) and i was successful in running the motor in no load conditions in both directions with +Iq, -Iq. Placement angle was around 60DegressBut if i followed the same procedure to find the placement angle

Hello, I have a custom board based on the EVSPING4 Dual, the schematic is the same with the difference being no speed sensors and different mosfets. When I try to start the motor with motorpilot the speed is climbing in Motor Pilot but the motor is not spinning, after some seconds I get the error Start Up Failure. Motor Voltage and Voltage for the Gate Drivers are 12V. I measured the Phases of the motor and the Gates of the mosfets. The Phases are all on 12V as are the Gates of the top Bridge side. I added my schematic down below.

Dear Support team,I am currently working on a NucleoF401RE and IHM07M1 driver to run a 24V PMSM motor (rated at 3600 RPM, no load).1. I am using STM32 Motor Control Workbench version 5.4.8 for motor profiling. The motor profiler doesnt compute any parameter and throws the following error - "The measurement is taking too time".2. Anyways, I tried to run the motor with the motor parameters I know, and it immediately goes into speed feedback error. I would appreciate your assistance in resolving this issue.

Trying to model and use an inverting opamp circuit for current sensing[PN]: STM32H755ZITx [VERSION]: MCSDK 6.3.2[TOOL]:MC WB, Board Designer, Firmware, MC PROFILER, etc..)[DETAILS]: Using an inverting opamp for the current sensing circuitry. Goal is to run FOC closed loop position control but can't seem to get the current sensing working properly.[EXPECTED BEHAVIOR]: Able to configure an inverting opamp instead of a non-inverting opamp when using a (three) shunt resistor setup. Then once the project is created I want to use this to profile the motor parameters and run the motor in closed loop by using the current sensing circuitry. [HOW TO REPRODUCE]:Try to use the board designer and configure a current sensing feature, the only option available when working with external opamps is the setup with a non-inverting opamp.    We noticed that our opamp circuitry is different from what the (MCSDK) workbench expects and see that the behaviour when trying to

I have read that in the MCSDK, there is an overmodulation technique that could exceed the linear region of the SVPWM. However, without it, I see in the WC Workbench, that the maximum modulation than can be achieved even without overmodulation is 100% so the modulation index will be equal to 1. Moreover, without overmodulation, I can see that I could attain a modulation index equal to 1 which is superior to the linear region which is 0.866. So what is the role of the overmodulation flag, and what is the difference without it?Thank you

Hello,Why is the bus voltage remain  about 330v when motor max-voltage is changed to 280v ?the attchment is the status of Motor Pilot based on STEVAL-CTM010V1 .

Hello, I have a custom Board based on the EVSPING4 Dual. I was able to flash the code and Debug with a segger j-link. I added a Uart message after the init and I could see the message with putty. But when I try to connect with motor Pilot the error No STlink connectet pops up. I generated the code with motor control workbench and enabled motor control. In the code the uart is initialized but i cant find any code to actually communicate an control the motors over uart. Thanks

 Hi team.I want to implement 6-step sensor less voltage mode on stm32g474. So, I referred the MCSDK V6.2.1, 6-step sensor less Voltage mode with stm32g431 with IHM03 code.But I couldn't understand how to commutate timing is controlled.Also, I read the "md_docs_2six-step-firmware-algorithm.html" at MCSKD installed folder, but no mention.The reason why I want to know the commutation timing is because PWM overrun occurs at high speeds commutaion.Currently, I am using a code to check the commutation timing on every PWM cycle. Actually this cycle is Tim1's CH4 compare interrupt.The commutation waveforms at low speed and high speed are as follows.What kind of control and timing should be used to perform commutation successfully?fig1. Commutation at low speedfig2. Commutation at high speed  

Hello everyone,Does anyone have experience with changing the function of a pin in program?(Not CubeMX tool) I'm currently using the STM32H5 MCU to develop a motor drive inverter.For rotor angle feedback, we’re considering two options: Encoder (ABZ) and Hall sensors.As shown below, when configuring TIM2 in Encoder + Index mode, it occupies PA0, PA1, and PA4. However, if TIM2 is configured in Input Capture mode (for Hall sensors), it uses PA0, PA1, and PA2 instead.We want to let the user select the desired feedback method (either Hall or Encoder), and then have the firmware initialize the corresponding pin configuration at runtime. So, my question is: how should I config the CubeMX configuration from the beginning, and how can I implement the function initialization in code to change different function?Has anyone had experience with this type of setup?"  

I am currently working or a project with microcontrollers STM32 and this is my current situation:- I want to send from my NUCLEO f4476ZE the desired speed via UART to my other controller which is B-G431B-ESC1 discovery kit with STM32G431CB MCU.- I have this discovery kit connected to the motor (I can make it run with the CubeIDE project generated from the Motor Control Workbench that i have created with this Discovery kit and a Maxon 251601 motor). The problem that I have is that i don't know which structure of message should I send from the Nucleo to the ESC1 for the ESC1 to read and interpret it correctly to move the motor at the desired speed of the message.I was trying sending this as desired speed:char tx_buff[32]; int velocidad = 1500; while (1) { sprintf(tx_buff, "SPD%d\n", velocidad); HAL_UART_Transmit(&huart2, (uint8_t*)tx_buff, strlen(tx_buff), 1000); HAL_Delay(1000); }And for the receiver I wanted to add this: HAL_UART_Receive_IT(&huart2, &rx_buf[rx

I have to receive a desired speed that is sent from the TX code, and receive it into the RX code of another different STM32 board that is connected to a Maxon 251601 motor, for it to work. If i write for example MC_ProgramSpeedRampMotor1(1500,2000) directly in the board that it is connected to the motor it works good. The problem that I have is that I try to send this from the transmiter board: char tx_buff[32]; int velocidad = 1500; while (1) { int len = sprintf(tx_buff, "SPD%d\n", velocidad); HAL_UART_Transmit(&huart2, (uint8_t*)tx_buff, len, HAL_MAX_DELAY); HAL_Delay(1000); } And the receiver has this in the main: char rx_buff[32]; int duration = 5000; while (1) { HAL_UART_Receive(&huart2, (uint8_t*)rx_buff, 8, HAL_MAX_DELAY); char *ptr = strstr(rx_buff, "SPD"); if (ptr != NULL) { int velocidad = atoi(ptr + 3); MC_StartMotor1(); MC_ProgramSpeedRampMotor1(velocidad, duration); } I was trying for it to receive "SPD1500\n" inside the rx_buff, to make the motor move

How can you help me customize, my motor pilot to a customized application, and how can I read data from the controller sperately so that I can view it on the remote cloud. And could you please make for us An Stm GSM MODULE FOR US FOR IOT WITH THE GPS EMBEDDED IN IT Small IN SIZE BUT STRONG.

I am trying to understand SVPWM logic developed by ST, from mc workbench, i referred the documentation provided. But its much unclear in the documentation as well why and what variables are being used for. I want to know the reference of the literature discussed in the documentation (see image).Function: PWM_SetPhaseVoltages()My queries: What is the logic of X,Y,Z for calculating sector? Reference ? Instead of using simple tan-1(Vbeta/Valpha). Thanks in advance. 

I'm using an STM32L452RE MCU to communicate with the L6470 stepper motor driver via SPI, and I'm currently having trouble reading data from the driver. I’m able to transmit data (e.g., RUN, MOVE, SOFT_STOP commands). The motor runs and responds correctly, so SPI transmit appears functional.Problem: I'm trying to read registers like ABS_POS, ACC, etc. using the GET_PARAM command. I always receive 0 in response, regardless of the register.Setup: MCU: STM32 (HAL SPI) SPI Mode: CPOL = 1, CPHA = 1 (Mode 3) Driver: L6470 Motor: Connected and moving MISO, MOSI, SCK, CS connections confirmed uint32_t L6470_ReadABS_POS(void) { uint8_t cmd = 0x25; // GET_PARAM | ACC (0x05) static uint8_t TramsmitData[2]; TramsmitData[0] = cmd; TramsmitData[1] = 0x00; static uint8_t receivedData[2] = {0}; for (int index = 0; index < 1; index++) { L6470_CS_Low(); HAL_SPI_Transmit(&hspi2,&TramsmitData[index], sizeof(TramsmitData[index]), HAL_MAX_DELAY); HAL_SPI_Receive(&a

When I connect a USB cable and use b-g431b-esc1, the U5 IC overheats and becomes unusable. Could you please advise me on the cause of this phenomenon and how to make b-g431b-esc1 usable again?To use the b-g431b-esc1, I soldered the power input/output pins, CAN pins, and the pins near the CAN pins (likely J8). Please let me know if you need any additional information.

 I am measuring the phase current signal, in between i see sudden spikes and the motor halts. I am testing at 60V battery input. It is hall based system and FOC.  It is a custom board and i have not configured the motor pilot, 2 questions if you can answer it will be helpfula. If  i am reading the phase currents at the middle of the low side pwm then it shall be consistently reading the same value but why suddenly it reads invalid value i do not understand i mean the spike.b. If it is low inductance value should i mandatorily switch at 20KHz at present i am doing at 15KHz. What best i can do to identify the root cause.Please advise based on the inputs i can move forward. 

Using a NUCLEO-G491RE and X-NUCLEO-IHM07M1 motor driver, I am trying to implement a Six-Step Commutation BLDC algorithm in a way that i can understand it myself. While researching , i found out that the TIM2 pins can be used simultaneously as Hall sensor triggers. In a way to understand how the interrupt will work, i implemented a very simple counter where the rising edge trigger of a 1kHz pwm signal is checked for trigger. However, i observed that, the polarity selection does not matter and the callback function triggers on both rising and falling edges of a signal. I am sure of this as i also tried with connecting a hall sensor to the pins. In addition, while keeping the other settings the same, i tried the same thing with a configuration where only Channel 1 is selected as Direct Input Compare and observed an expected result. Below are the codes: Callback Function:   void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim) { if (htim->Instance == TIM2) { hall_rese

Hello,I am using the FOC with hall sensor (having at 15 degree mechanical accuracy) on a BLDC motor controlled by STEVAL-PTOOL4A. I am using the MCSDK v6.3.2. I activated the Overmodulation in order to drive my motor at 18500RPM. However at this speed and without load I have a weird current signal. It is like a noise. However, when I run the motor at 8000RPM the signal is much better and it starts to be sinusoidal when I apply a load on my motor. Here are the current:At  high speed no loadAt low speed no load:At low speed with load: Without OverModulation, at 17000 RPM with load: Can anyone help me with this.Thank you. 

I am using STM32 MCSDK for one of my projects. After entering the motor control parameter and clicked on generate project button. The attached warning and error is popping. Kindly help to resolve this issue. 

Hello, I have made a custom board based on the EXSPIN32G4-DUAL. I want to use these motors for my project https://iflight-rc.eu/products/xing2-2207-1855kv-fpv-motor?_pos=4&_psq=XING2&_ss=e&_v=1.0.How can I get the params of the motor, is there any chance to use the motor profiler with my custom board? If i need to get the params elsewher wich ones are necessary for sensorless FOC? Thanks!

Exactly how does one connect the "Motor Profiler" to an out-of-the-box STEVAL-ESC001V1?I read all of the available documentation to no avail. Is the STLink USB hardware device required and does it need to be connected to the J4 "SWD" port?One section of the documentation [UM2197] "implies" that a 3.3V USB-to_TTL serial connection to the J2 "UART" connector would work:UART/I²C port (J2): normally used for serial communication between the ESC board and a PC; ST MC Workbench can be connected with the STM32, adding an external circuit (requires USB/RS232 converter-3v3 level).... but when the Motor Profiler is connected in this manner, I always receive a "No STLink Detected" error from the ST-Link CLI v2.4.0 from the Motor Profiler software.Thanks for your help,