The reason for the abnormal sound of the micro DC geared motor?

There are many faults in the use of micro DC geared motors, and various problems have occurred. Abnormal noise during failure is also one of our common problems. Why is there an abnormal sound, and how to fix the abnormal response? Woolen cloth?

If there is no axial movement of the armature to cause the collision, it should be that the structural parts are loose. Please remember a principle: Don't remove the gasket on the magnetic pole easily, it will affect the performance and running state of the motor. There are several ways to analyze the sound problem: Connect the power supply of the motor electronic control system to the oscilloscope to see if the waveform is lost. When there is a phase loss, there will be waves, vibrations and noises, followed by whether the compensation coil and the armature leads are reversed.

Check it again, if it still doesn't work, it should be that the magnetic circuit is too strong and the electromagnetic noise is loud. You can adjust the motor to the rated speed to see if it is within a certain range, and then cut off the power) to see if it is still in the process of deceleration. Yes, if not, it is definitely electromagnetic noise. If not, it should be a mechanical issue.

Depending on how and where it is used, there may also be heat, erosion and even alien invasion. These problems will cause certain damage to the motor. If the motor itself is overloaded, undervoltage and overvoltage, it will cause the motor winding to fail. This will not only affect the efficiency of the motor, but also pose a certain threat to our personal safety. At this time, motor maintenance is particularly important.

During the use of the miniature DC geared motor, the power supply voltage changes too much instantaneously, or the insulation sheath on the surface of the winding wire is damaged due to reasons such as single-phase operation and mechanical collision. short circuit. At this time, the magnetic field of the ions will be unevenly distributed due to the short circuit, and the imbalance of the three-phase current will increase the vibration and noise when the motor is running. When the short-circuit problem is serious, the motor cannot start normally, and even in the short-circuited coil, a huge short-circuit current is generated instantaneously, and the coil heats up and burns out in a very short period of time. Therefore, whether it is a household motor or a high-voltage motor used in production, it is necessary to constantly check and maintain the motor during use.