What is going on with the loud noise of servo motors in 2020?

The category:common problem  Release time:2020-09-18
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Yongwei Motor sincerely provides customers with cost-effective products and overall solutions. During use, we often encounter various problems. What should I do if the noise is too loud? Let's take a look.

    When using some machine servo motors, the noise is too large and the motor drive load is unstable. When this problem occurs, many users respond that the quality of the servo motor is not good, because sometimes it will gradually change. Putting a motor or variable frequency motor to drag the load, the noise and instability are much smaller. On the surface, this is indeed the reason for the servo motor, but after careful analysis of the working principle of the servo motor, we will find that this conclusion is completely wrong.

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    AC servo system includes: servo drive, servo motor and feedback sensor (usually servo motor with optical encoder). All these components operate in a controlled closed-loop system: the drive receives parameter information from the outside, and then provides a certain current to the stepping servo motor, which is converted into a torque-driven load by the motor, and the load acts on or according to Its own characteristics accelerate and decelerate. The sensor measures the position of the load so that the drive device compares the set information value with the actual position value, and then changes the motor current so that the actual position value is consistent with the set information value. When a sudden change in load causes a speed change, the encoder knows that the speed change will immediately react to the servo drive, thereby changing the load provided to the servo motor to meet the load change and returning to the set speed.
    This eccentricity is caused by the fact that when the part is installed, the two holes of the part do not coincide with the rotation of the table or deviate too much. Or, due to improper manufacture of the top hole and the top hole, insufficient contact of the positioning surface results in eccentricity. Therefore, the ring diameter jump should be mainly solved from the above reasons. Gear hobbing is based on the principle of the forming method and the distance from the tool to the gear blank to machine gears. The gear transmission chain maintains the accuracy of movement with a certain transmission ratio relationship. But these drive chains consist of a series of transmission components. Their manufacturing and assembly errors must be concentrated at the end of the transmission chain during the transmission movement, resulting in uneven relative movement and affecting the machining accuracy of gear teeth.

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