How to solve the problem of commutation vibration of stepper motor?

Driven by segmentation! Subdivision drive is an effective method to specifically solve the low-frequency vibration of stepper motors.

If there is a tooth belt, the belt is tightened first, the deceleration time is extended, the acceleration process is increased, and the steering stops for more than 50ms.

You can add a shock ring to try it out, it should help you.

There may be several reasons why the stepper motor just vibrates and does not rotate:1Insufficient drive current:

The stepper motor needs enough driving current to generate a magnetic field during normal operation, which drives the rotor to rotate. If the drive current is insufficient, the stepper motor may only vibrate and not rotate. Check whether the current setting of the motor driver is correct, if you need to adjust, you can refer to the rated current and working voltage of the motor to adjust.

2.Motor wiring error: The direction of the two-phase current of the stepper motor should be consistent, otherwise it will cancel each other out, causing the motor to just vibrate and not rotate.

Check whether the motor wiring is correct, you can use a test tool such as a multimeter to check. 3.Excessive load:

Excessive load on the stepper motor may cause the motor to simply vibrate and not be able to rotate. Check whether the load exceeds the rated load range of the motor, if you need to adjust the load, you can consider using a reducer or other mechanical transmission devices to reduce the load. 4.

Mechanical failure: There may be problems such as jamming or wear between the rotor and mechanical parts of a stepper motor, which can cause the motor to simply vibrate and not rotate properly. Check whether the mechanical parts are normal, if you need to repair it, it is recommended to seek help from professional technicians.

To sum up, the stepper motor only vibrates and does not rotate may be caused by insufficient driving current, motor wiring error, excessive load or mechanical failure, etc., which need to be investigated and solved according to the specific situation. If you are not familiar with the repair and troubleshooting of motors, it is recommended to seek help from a professional technician.

Hello, the reason why the stepper motor just vibrates and does not rotate is 1One of the phases inside the motor is damaged, resulting in the lack of phase of the motor and the inability to rotate normally. 2.

Poor wiring contact of the motor leads to phase loss. 3.The four wires of the motor are connected to the wrong sequence of the bending wires, which causes the two-phase windings of the motor to be unable to supply power normally, and the motor jitter.

Jan Jing 4The stepper motor driver is damaged and cannot drive the motor properly. Dear, the above is the answer to your question, do you have anything else to ask.

To reduce the current flowing through the motor coil, this can be done by pinning the drive to automatically half-flow when the motor is stopped, reducing the driving current of the motor. Due to the working mode of the stepper motor, the internal coil of the stepper motor has always had a current conversion in the state in which the cavity is dispersed.

On the issue of abnormal noise, it is difficult for ordinary car owners to distinguish which ones are fault abnormal noises and which ones are reasonable abnormal noises. Only nearly 20% of the vehicles that went to the repair shop to detect abnormal noises really had problems. In the case of a turbocharged engine, there is a must be a difference between the sound and the sound of a naturally aspirated engine; Models with engine guards may also make noises due to friction; After some car owners come into contact with different cars, it is likely that due to their lack of understanding of mechanical knowledge, they mistake reasonable abnormal noise as a vehicle failure.

Therefore, learn to distinguish the abnormal noise of the car and avoid wasting time and energy.

The identification of car noise is limited, and it is difficult to use special instruments to measure the sound of the car, and the sound of the car can only be described and compared with the judgment of the sound in daily life. For example, the "rattle" sound caused by the dry friction of the bearing, and the "click" sound similar to the small hammer hitting the cement floor caused by the excessive valve clearance.

1. Correctly distinguish between normal and abnormal sounds.

The vibration of each mechanism in the work of the car will emit a variety of sounds, but the sound does not mean that the car is faulty, in order to avoid unnecessary disassembly, we must first distinguish between normal sound and abnormal noise. The normal vibration sound of each system component (such as the noise on the surface of the engine), the impact sound of the gear when shifting, the air intake sound and exhaust sound of using gas as the working source, and the gear meshing noise are all normal sounds. Abnormal noise (abnormal noise) can be divided into slight noise, general noise and malignant noise according to the impact on the performance of the car.

Slight noise, such as the flashover sound of high-voltage electric leakage, the slight loose sound of rolling bearings, etc., the general volume is small, the degree of wear and tear of the parts is not large, and there is no significant change for a long time.

3. When diagnosing abnormal noise, attention should be paid to creating good auscultation conditions and trying to eliminate the interference of other noises, so as not to affect the accuracy of judgment.

It is best to consciously amplify or reduce the sound, that is, use a screw or other metal rod as a stestological instrument to contact the sound part to amplify the sound, or use a single cylinder fire cut-off to reduce the sound to meet the diagnostic needs. The auscultation site should be kept quiet to minimize human interference.

First of all, we must confirm the cause of the abnormal noise of the motor, there are many reasons for the abnormal noise of the motor, I will give a few examples:

excessive current; The solution is to match the appropriate current.

resonance point; In the case of subdivision 3200, the motor has 2 resonance points, one is pulse 4000-5000; One is 8000-9000; The solution is to split the resonance point.

When the speed is fast, the torque drops, and the load is at the critical point, there will be a large vibration and abnormal sound of bright blue; The solution is to increase the current appropriately.

voltage or reduce the speed of reasonable use.

This is mainly related to the drive, possible reasons:

One. Stepper motors.

The mechanical friction caused by low-speed jitter is difficult to avoid even many domestic AC service messy inspections.

Two. The speed drop at stepper motor renaissance and zero results in the reverse electromotive force of the stator coil.

As it increases, the current changes dramatically and generates noise.

The Lexai DM series stepper driver solves noise, jitter and heat generation.

The problem of making a lot of effort to make a lot of tomato also has a very obvious effect, and it is recommended that you try it.

Summary. Dear, the first step: If there is obvious noise inside the stepper motor when it is stationary, it is a bit similar to the rapid change of the coil, which is generally caused by excessive coil current.

In this case, the most effective solution is to reduce the current flowing through the motor coil, which includes setting the driver to automatically half-flow when the motor is stopped, reducing the driving current of the motor. Because of the way the stepper motor works, the internal coils of the stepper motor are always in a current shift.

Dear, the first step: If there is obvious noise inside the stepper motor when it is in a stationary state, it is a bit similar to the rapid change of the coil, which is generally caused by excessive coil current. In this case, the most effective solution is to reduce the current flowing through the motor coil, including pure age

Set the driver to automatically half-flow when the motor stops, and reduce the driving current of the motor. Due to the way the stepper motor works, the stepper motor is in a state of tassel pants, and its internal coils have been subject to current transformation.

Step 2: When the stepper motor is in motion, if the noise and vibration of the stepper motor are found to be obvious, the following steps should be checked: 1. Whether the stepper motor and the driver are matched

If they are not matched, the following steps of subdivision, drive current, and speed are likely to be in vain. When choosing stepper motors and drives, it is best to buy them in sets, and each company's products have generally been tested by matching, so there will be no compatibility between products. 2. Correctly adjust the subdivision and current of the stepper motor driver.

The larger the subdivision, the smaller the change in the coil in the motor, which reduces noise. It is generally recommended to set 8 subdivisions and above, if the checklist method is used to achieve acceleration and deceleration and constant speed calculation and control, it is easy to be competent for general MCUs. In the case of ensuring that the stepper motor has enough punch back torque to drive the load, the driving current should also be reduced as much as possible, the smaller the parameter is set, the smaller the coil current change range in the motor scattering.

This step is very important, often some engineers do not pay much attention, thinking that there is a problem with the quality of the world, but in fact, the subdivision and current are not correct.

3. Correctly set the acceleration and deceleration of the incoming motor and the maximum running speed of the walking incoming motor. Experiments show that the stepper motor is more likely to generate additional noise in the process of increasing and decreasing the mountain speed. The solution is to ensure that the acceleration and deceleration of the stepper motor does not lose steps, and the acceleration and deceleration of the stepper motor can be appropriately increased.

In the case of light load, the acceleration and deceleration of the stepper motor should be controlled within 1s, otherwise it will be obvious that when the motor accelerates and decelerates, the noise caused by the change of the driving current frequency will be heard. When setting the maximum operating speed, it is necessary to consider whether the motor torque is sufficient to drive the load and whether it will resonate with the connected mechanical structure at this speed.

When the load is heavy, especially when the timing belt is attached, too rapid reversing can cause large movements. The solution is to tighten the timing belt, decelerate for a longer time, and accelerate for a longer time. It is best to stop for more than 50ms in the middle of the conversion.

Adjust the acceleration and deceleration time a little more and try it.

Generally, the stepper motor shake is caused by the situation that the stepper motor is running at low speed, and the solution to this situation is usually as follows

If the stepper motor happens to be working in the resonance zone, the resonance zone can be avoided by changing the mechanical transmission such as the reduction ratio;

Stepper motor drivers with subdivision are the easiest way to do this;

It can be replaced with a stepper motor with a smaller step moment angle, and if you are using a two-phase stepper motor, it can be replaced with a three-phase or five-phase stepper motor;

Replace it with an AC servo motor, which can avoid jitter, but the cost is very high;

Magnetic dampers can be added on the shaft of the stepper motor, but the disadvantage is that the structure of the mechanical structure is changed;

The motor shake is suppressed by a control algorithm that prevents motor jitter.