1. Causes of motor vibration

Before understanding how to measure motor vibration, you first need to understand the causes of motor vibration. Motor vibration is usually caused by the following reasons:

1. The internal structure of the motor is loose or severely worn

2. The motor bearing is worn or damaged

3. The motor rotor is unbalanced or the blades fall off

4. The motor connection is loose or loose

5. The motor installation is unbalanced or unstable

2. How to measure motor vibration

The measurement of motor vibration is usually carried out using a vibration meter. A vibration meter is a professional measuring device that can measure parameters such as the vibration frequency, vibration velocity, and vibration acceleration of the motor. The following are the steps to measure motor vibration:

1. Install the vibration meter on the motor, usually on the motor base or on the motor bearing.

2. Turn on the vibration meter, select the appropriate measurement mode, and set it according to the instructions.

3. Start the motor and record the parameters such as vibration frequency, vibration velocity, and vibration acceleration displayed by the vibration meter.

4. Determine whether the motor has a vibration problem and the severity of the problem based on the measurement results.

3. Motor vibration test method

After understanding how to measure motor vibration, some motor vibration test methods will be introduced below.

1. Residual vibration test method

The residual vibration test method is a simple and easy motor vibration test method. The principle is to determine whether the motor rotor is balanced by measuring the residual vibration time of the motor bearing after the motor stops running. The shorter the residual vibration time, the more serious the imbalance of the motor rotor.

2. Phase test method

The phase test method is a test method that determines the motor vibration problem by measuring the motor vibration phase difference. The principle is to use a vibration meter to measure the vibration speed or vibration acceleration of the two bearings of the motor at the same time, and then calculate the phase difference to determine whether the motor has a vibration problem.

3. Spectrum analysis method

The spectrum analysis method is a test method that determines the motor vibration problem by analyzing the spectrum characteristics of the motor vibration signal. The principle is to use a vibration meter to collect the motor vibration signal, convert the signal into a spectrum diagram, and then determine whether the motor has a vibration problem based on the characteristics of the spectrum diagram.

4. How to avoid motor vibration

In addition to taking appropriate vibration control measures, motor vibration can also be avoided by the following methods:

1. Regularly inspect and maintain the motor to detect and solve problems in a timely manner.

2. When installing the motor, ensure that the motor base is in full and stable contact with the ground and is correctly positioned.

3. When the motor is running, it must remain stable to avoid unnecessary vibration and impact.

4. Select motor products with good quality and stable performance, and use them in accordance with the prescribed use requirements.

The measurement and control of motor vibration are of great significance to ensure the normal operation of the motor and improve production efficiency. By understanding the causes of motor vibration, how to measure motor vibration, and motor vibration test methods, the occurrence of motor vibration problems can be effectively avoided and the normal production can be ensured.

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