The main functional components of the system are listed below:
- RPM sensor (e.g., BC 401);
- accelerometer (e.g., BC 110 or BC 111);
- FFT Spectrum Analyzer (e.g., ZET 017-U2).
Accelerometer, stationary element to be balanced and RPM sensor are interconnected with each other by means of a platform with mounting fixtures.
Then the sensors are connected to the FFT Spectrum Analyzer. FFT Spectrum Analyzer is used for digital processing of the signals received from the sensors.
Evaluation of unbalancing parameters is performed by the programs from the scope of ZETLAB software package. The program “Electrical machine rotor balancing” allows to conduct measurements in automated mode and to produce test reports (the program is implemented in a graphical programming environment ZETVIEW). When this program is used, there is no need to make any additional filtration or signal processing.
The program Electrical machine rotor balancing is using RPM sensor and accelerometer signals for calculation of the following parameters:
- rotation frequency, rpm;
- unbalance value, gr×cm;
- unbalance plane angle in relation to the light-reflecting mark.
The angle of average unbalance is depicted in the program as “Unbalance angle”. The unbalance angle is calculated in degrees from the center of the light-reflecting mark to the opposite side of the balanced item rotation.
The unbalance value is evaluated in standard measurement units gr×mm or gr×cm (depending on the requirements of a particular facility).
The measurements results are saved into the log.
A detailed user manual on installation of the sensors, signals processing and unbalance parameters evaluation is available in the article “Measurements of the unbalances”.
Advantages of the system
The price of the system depends on the particular configuration
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