STM32 MCUs Motor control

Hi Community,we are building some sort of RC vehicle using the following:MC Motor Control Workbench 6.3 with FOC-AlgorithmControl Board: B-G431B-ESC1Encoder (4096 PPR)BLCD-Motor with 5 pole pairsour setup runs well enough when using a 1:10 gearbox. For another prototype we switched to a 1:5 gearbox and this is where the problems start to occur.When running the motor at arround 300 to 500 RPM (with or without load) all seems normal but when we increase the velocity further (arround 700 RPM) all of a sudden one of the two motors changes direction and spins at a very fast speed (arround 2000 RPM) in the opposite direction.When restarting the application all runs normal again until we hit that velocity agian.Startup and Encoder-Alignment seem to be ok. I suspect some sort of variable overflow or underflow somewhere in the speed pid controller but do not know where to start digging.Did anybody encouter a similar problem and may have some suggestions ?

Hi, has anyone been able to successfully interface the DRV8323HRTAR with an STM32? I have been using an STM32F072RB, and have been trying to use ST's motor control workbench to generate code for controlling a BLDC motor. I've used the .ioc generated to ensure that my PWM_H and PWM_L channels for U, W, and V are all connected to the correct pins, and have connected my current sensing pins to SOA, SOB, and SOC of the gate driver. I have tried numerous configurations, but have not been able to the get MCU to even generate a PWM wave. The code compiles correctly, and does not crash before reaching the while loop, but I do not see and kind of signal when I look at the PWM pins on a scope. The current feedback pins also only ever read 1.8V, not changing on account of the motor not rotating. I've gone through ST's entire MC workbench tutorial, and I have look at numerous other sources online, but I am still unable to make any progress with my motor driver. Has anyone else ever tried to interf

Please provide a Linux version of MCSDK. ST already has CubeMX and CubeIDE for Linux and they also run on Java, so I guess it should not be a problem.Or even a better alternative, just provide source code for MCSDK examples in a git repository. It is very frustrating to obtain source code through CubeMX and always having to log in.

Hi,I want to control BLDC motor with X-IHM07M1 motor driver and stm32 nucleo-G071RB microprocessor. I had read that this motor driver is compatible with Nucleo boards, but when I entered the Motor Control Workbench application, it only highlighted certain boards as options. After spending some time, I found and selected my board under the control unit section.My question is, do I need to use one of the boards listed in the application for the motor driver to work ideally, or can I use my board without issues after selecting it as described?

Hello,IntroductionI would like to profile a motor which is not in the motors tab in MC Workbench. I have done some Googling and reviewed the ST documentation (STM32 Motor Control SDK > Motor Profiler Application Note) but have not found the solution to my problem.Problem DescriptionBecause the motor I'm using is not provided in an ST development pack I did the following:New Project > Modular > 1 Motor > FOC > NextMy motor is not in the list so I click next to select the power board (IHM08M1) and control board (F302R8). That's as far as I can get because without selecting a motor I can't create the project and generate code.The motor I want to profile is a Dualsky XM4240CA-12 (11.1V, 850 kV). It's an ordinary brushless outrunner.How can I do this? The hardware and software I'm using are:Hardware:    Control Board:Nucleo F302R8    Power Board: IHM08M1    Motor: Dualsky XM4240CA-12 (11.1V, 850 kV)Software:    MC Workbench 6.

When using MCSDK 5.4.8 to generate code with Hall sensor feedback control and considering the possibility of an attached load during startup, there is a chance of encountering excitation noise.Normally, the U-phase current signal should correspond to the rising edge of the U-phase Hall sensor.However, under abnormal conditions, there are multiple U-phase current signals between the rising and falling edges of the U-phase Hall sensor, resulting in the generation of motor excitation noise.(Follow ST file adjustments to the Hall phase section, which have already  fine-tuned for optimal performance.) I'm currently using the command MC_ProgramSpeedRampMotor1 to set the motor startup parameters, and the issue persists when switching between MC_StopMotor1 and MC_StartMotor1 after the first startup attempt.Attempts to use MC_Clear_IqdrefMotor1/MC_AcknowledgeFaultMotor1 to clear the buffer when stopping the motor have been ineffective.Assistance is required to identify which specific

Hey Guys,I am looking to develop a 3 phase motor drive. Any recommendations for an MCU that may contain motor control specific PWM channels (ideally paired), minimum of 6.

I want to control a TRIAC's gate which will be working on 230V AC. I managed to create a one-pulse PWM based on zero-crossing detection. I want to implement a soft start function. To do that, I implemented soft start by controlling the duty cycle. However, the delay is coming from the zero-crossing side, meaning the TRIAC gate will be turned on not immediately after zero-crossing but during some random voltage. How can I solve this? Is there a way to make delay from duty cyle comming from the other side? As you can see on the photo when rising edge is detected(orange channel) there is a delay after that(blue channel). 

I am unable to create motor control project with FOC algorithm using custom power. It generates an error:It is not possible to create a motor control project with the FOC algorithm using the selected hardware. No proper path for motor control signals was found for the following mandatory features: - Current SensingFor more details, please, look at the following log file in your home directory: .st_workbench/connectAlgo.logAlthough I've added current sensing and the report generated is fine.Not sure what I'm doing wrong. I've also attached the log file.

Hello everyone,I am generating the observer for an Induction motor with a FOC loop. However, I am unsure about the appropriate values for the observer parameters (see image below). I've read that the LSO Gain should be between 1 and 1.5, but I'm uncertain about the suitable ranges for Kp and Ki or the ideal bandwidth for using the Auto Calculate function. I am working with an induction motor with the following characteristics:1750 rpm220 V1.94 A2 pole pairs0.350 kWElectrical Parameters (Experimental calculations and estimations): Rs: 24.82 ohms, Rr: 4.47 ohms, Llr = 0.2249 H, Lls = 0.2249 H, and Lm = 0.98 HThere are some considerations that I should take into account in order to choose LSO Gain, Kp, and Ki, or what are the suggested ranges. More details about my setup :[VERSION]:  MCSDK 6.3.0 & 6.2.1[TOOL]: MC WB 

Hello everyone, I am using the MC SDK AC Induction Motor and I am having some problems with the Observer. While accelerating, the motor speed estimated by the observer is very close to the actual speed. However, when it reaches the reference speed, the control loop starts reducing quadrature voltage, which leads to a decrease in IQ. As a consequence, the actual rotor speed decreases, but the observer continues to estimate the speed as if it were still increasing. Therefore, the control loop keeps reducing the voltage to decrease the speed (which it does), but this is not reflected in the speed estimated by the observer (see attachment). Eventually, the motor stops, and the observer continues to estimate a non-zero speed until a speed feedback error or overcurrent error occurs. Does anyone knows what may be the problem, or anyway to troubleshoot it. More details about my setup :[VERSION]:  MCSDK 6.2.1[TOOL]: MC SDK & Motor Pilot[HARDWARE]:  STEVAL-IHM02

Hello ST community,Currently we are working on a High power BLDC PMSM motor of  350W using selected ST board EVSPIN32F0601S3.Please guide me to select the range of parameters in MCSDK V6.2.1 software (CUBEMX 6.2.0 and KEIL V5) to drive the BLDC motor. We are facing problems when we select parameters such as speed mode, frequency = 16 kHz, voltage 250 V, current 3A (sensor mode- Encoder 1024 ppr), startup current is 2.5 A, but still motor only aligns and stop.Motor Specs:I-PMSM  motor with Encoder 1024 ppr.Resistance - 9.1 ohms, Inductance - 37.75 mH, Torque - 5 Nm,Back Emf voltage (Vp-p) - 108 V, Back emf constant(@152 RPM) - 254.59 V/rpmLd/Lq = 1, Poles - 4, Max Speed - 600 RPM, Rated Voltage - 300 VDC  Please find the attachment below.

Hi,We are using STEVAL-SPIN3201 to evaluate STSPIN32F0 which we are planning to use in one of our motor driver.We have 24V, 60W BLDC motor of max. speed 1500 rpm and trying to drive/control it using MC Workbench of MCSDK-6.3.0 in FOC mode.We need some assistance on the following issues which we are facing; Issue-1: We don't have all the motor data which MC Workbench need. For this if we are trying to use the Motor Profiler, it is not connecting. So, we tried to measure the required motor parameters manually and entered these parameters in the workbench. We could generate the code from the workbench and drive the motor at no load. We observed that the motor runs fine at higher rpms but struggles at lower rpms (below 150). At lower rpms the speed is fluctuating meaning slowing down and again ramping up. The motor is equipped with a quadrature encoder of 5000 lines per revolution. Issue-2: We do not understand which control mode to choose. There are 3 control mode namely, Torque

Hi i am New for Arm mbed ,MY project is i want to Control 3 phase induction motor speed using VFDHere my inovance VFD controlling by (RS 485 Communication Using Max 485 Module) STM 32 Nucleo F767ZI controller,My slave ID -01,Baud rate -9600.modbus data format -8-N-2,All my VFD Setting was done and Cross checked by USB to RS 485 Driver using modbuspoll Software.(Here i controlling Motor Speed and Direction)my connection max 485 driveNucleo PD_6 (RX)->RORE and DE short connect Digital pin PC_8Nucleo PD_5 (Tx)->DIVCC connect 5V power supplyA connect VFD 485+B connect VFD 485-Gnd connect with GNDthis photo is MY VFD Setting  Below i Attached my code```#include "mbed.h"#include "BufferedSerial.h"Serial pc(USBTX, USBRX,115200);Serial RS485(PD_5,PD_6); // Tx, RxDigitalOut ho(PC_8);//Serial RS485(PD_6,PD_5);typedef uint8_t byte;//byte data[9] = {0x01,0x04,0x00,0x48,0x00,0x02,0xf1,0xdd};//your databyte enable[9] = {0x01,0x03,0x04,0x00,0x00,0x00,0X01,0x3B,0xF3};//byte enable[9] =

Hello, I'm planning to use 4xSTSPIN32F0 on one PCB and I was planning to use one input supply(3.3V, 1.5A) for all 4xSTSPIN32F0. I'm struggling to understand power architecture of STSPIN32F0 when using 3.3V supply. Does it need separate 12V at VREG12V?Thank you!  

 Hi I am having issues spinning a motor in speed control mode on the EVSPIN32g4 Evaluation board . The BLDC in question is BL23E33-01D. We have a quadrature encoder connected with a 1000 Pulses per revolution. ALl testing is done using the Eval board and the Motor pilot GUI. i am using MCSDK 6.3.0We seem to be able to run the motor when we setup the project in Observer + PLL mode but when we change to quadrature encoder we get issues which i will detail below.  When we run the motor we seem to be able to get consistent behaviour when we are at speeds under 1500RPM. When we increase the speed to between ~1600RPM and 2000, the motor slowly decelerates and tracks to a slower speed than what is set (for instance it runs at 1000 when we set the speed reference to 1700. We are able to reduce the speed and increase it, but when we try increasing the speed to above 1000RPM, the motor speed saturates and doesn't increase. This behaviour persists until we reset the board.&nbs

Good day,my design uses an externally powered STSPIN32G4, so that the CPU can be powered while VM is off.Once VM is present the fault flags (mainly MC_UNDER_VOLT) can be reset and the motor can be started. The motor control will go through it’s initialization state and finally end up in the RUN state. However, this does NOT reset the embedded gate driver chip, so this will still be in an undervoltage fault state. Therefore, the power will never be powered. Yet, the fault will be cleared implicitly by stopping the motor and then starting it again.In my application, where I use the FOC with just an incremental encoder, this can have some dangerous side effects. Since the control relies on the alignment between encoder and the motor, having the motor de-energized during the alignment phase will cause a wrong alignment. However, the SDK remembers that the motor has already be aligned. If the motor is stopped now and then restarted (which implicitly clears the gate driver faults) the motor

Posted on July 03, 2014 at 08:16We are using the FOC SDK 4.0, the eval board STEVAL-IHM039V1 (STM32F415ZG) and a 400 V, 1kV motor driver STEVAL-IHM025V1.The motor is working with no mechanical load and a quadrature encoder as position feedback. Controlling the rotation speed works fine from STMCWB.But when requesting more the 2500 rpm, the requested speed goes up in the speed monitoring graph, but the reel rotation of the motor stays a approximately 2500 rpm. Is this a limit of the software?What parameters ( speed controller, torque controller, field weakening, )  have we to tune, to get to a higher rotation speed? #stm32100-pmsm-foc-sdk-speed-rpm

I'm trying to use Motor Control workbench with BLDC motor (from orbital sander). I ran a test with motor profiler, my motor parameters are the following:7 pole5 Apk30VRs: 0.1 OhmLs: 0.022 mHB_emf const: 2 Vrm/krpmInertia: 30 uN*m*s2Friction: 17 uN*m*sMax rpm: 11000The motor works fine under ~8500 rpm, but above that stops with speed feedback error. With the original control PCB the motor can achieve 11000rpm, but it uses simple b-emf control. Any recommendation to achieve 11krpm? I tried to use flux weakening feature, but didn't helped.Thank you in advance!

HiI wanted to test ST MotorControl Workbench for experimenting with brushless motors, I have installed and tested the MotorControl Workbench 6.2.1 and MotorControl Workbench 5.4.8 on win 11 and both of them would fail to generate the projects out of box with this error message,I have set them to use keil IDE v5 and my stmcubemx version is 6.10.0you can check the error log hereQuote2024-01-28 18:56:58,742 DEBUG [Main.lambda$run$0] Arguments: [-ioc, C:\Users\Ali\Desktop\mc\EvalG0_SingleShunt_IHM023V3_HAL\EvalG0_SingleShunt_IHM023V3_HAL.ioc, -xdm, C:\Users\Ali\Desktop\mc\EvalG0_SingleShunt_IHM023V3_HAL\EvalG0_SingleShunt_IHM023V3_HAL.wb_def]2024-01-28 18:56:58,745 DEBUG [ArgsValue.readPropertiesFile] [AppConfig] pack.source = "C:\Program Files (x86)\STMicroelectronics\MC_SDK_5.4.8\Middlewares\ST\MotorControl"2024-01-28 18:56:58,745 DEBUG [ArgsValue.readPropertiesFile] [UserConfig] do not exist in "C:\Users\Ali\.st_motor_control\wb2mx.properties"2024-01-28 18:56:58,753 DEBUG [ArgsValue.get

Hey everyone,the STM32G4s (including the STSPING4) have the VREFBUF feature, which allows to use an embedded voltage reference as reference voltage for the ADCs and DACs.I’m a bit surprised to see, that this is not used by default on the official dev boards (EVLSPIN32G4-ACT and EVSPIN32G4) and the reference voltage is instead connected to the 3.3V supply.I thought, that using the internal reference would give you a better accuracy on the ADCs, which should result in better FOC accuracy. Also, if the ADCs are used to measure temperature etc. this would give more accurate results.So why is the voltage reference not used by default? Am I missing something important here?Cheers,D.Frejek

[VERSION]: MCSDK 6.2.1, 6.3.0 (CubeMX 6.11.0, STM32G4 FW V1.5.1)[TOOL]: Motor control WorkBench[DETAILS]: When creating a project that has the Hall sensor of a motor selected as the main sensor and also the Open Loop debug feature enabled, the resulting project can't be built due to missing defines and variables.[EXPECTED BEHAVIOR]: I expect the tool to create buildable and working code.[HOW TO REPRODUCE]: Create a configuration like mentioned under DETAILS. I renamed and attached a MCWB configuration made with preset hardware (I-PMSM 24V motor, B-G431B-ESC1 inverter).Generate code from project.When importing the project in CubeIDE and trying to build it, following Errors pop up:- undeclared defines OPEN_LOOP_VOLTAGE_d, OPEN_LOOP_VF, OPEN_LOOP_OFF, OPEN_LOOP_K for the OpenLoop_ParamsM1 typedef in mc_config.c- 'VirtualSpeedSensorM1' undeclared, used in various places in mc_tasks.c

Hello,Now I am refer to a design of NUCLEO-G474RE board for Motor Control with 6 step method. I found there are some define data of TIM setting. but I cannot get the value of the define data. could you tell me where to find the defined data?Thanks!dqsh06 

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Hi,I'm using MC WB 6.3.0 with Motor Pilot.I wonder how to plot the following signals that are defined in MC WB in Motor Pilot:PWM_CHU_H, PWM_CHV_H, PWM_CHV_H,BEMF_U, BEMF_V, BEMF_W  I don't see these registers are defined in the list of Registers in Motor Pilot.Thanks