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The electric vibration test system works like a speaker. That is, the energized conductor is moved by the electromagnetic force in the magnetic field. When the moving coil in the magnetic circuit of the vibrating table passes through the alternating current signal, an exciting vibration force is generated in the magnetic circuit. Shake table structure
Shaker's terminology â—Ž frequency range: Vibration test system in the rated excitation force, the maximum displacement and maximum acceleration specified frequency range.
â—ŽRated thrust: The force (unit: N) that can be generated by the vibration test system; this force is defined as the rms value in random vibration.
â—Ž Maximum displacement: The maximum displacement value that the vibration test system can generate. This value is limited by the mechanical operation of the vibratory table and is usually expressed in double amplitude (unit: mmp-p).
â—ŽMaximum acceleration: The maximum acceleration value that the vibration test system can generate under no-load conditions (unit: m/s2)
â—ŽMaximum speed: The maximum speed (unit: m/s2) generated by the vibration test system.
◎Maximum load: The maximum loading weight (unit: kg) on ​​the vibration table.
â—Ž Moving parts: The moving parts of the electric shaking table are the motion system composed of table tops, moving coils (including skeletons), suspension couplings of moving coils, flexible supports, electrical connectors and cooling connections.
â—ŽAllowable eccentric torque: The maximum allowable eccentric moment value of the vibratory table guide system.
Electric Vibration Test Troubleshooting and Maintenance
1. After the power switch is turned on, the light is off or the controller is not displayed. Check whether the power inlet is connected and whether the fuse is installed.
2. In AM output, open the function switch to "ON", and the rotation amplitude switch will not vibrate. Check if the output terminal is connected or the interface is connected incorrectly.
3. The amplitude rotation knob is open to the maximum, and the noise and table movement occur. The main reason is that the operating current is large, and there is a control that the amplitude out of control exceeds the self-commissioning <5mm. The small amplitude knob and amplitude control parameters should be adjusted to eliminate this. malfunction.
4. There is a slight “click†or obvious abnormality in the work, and it should be stopped immediately to check:
â—Ž Open the cover of the table top and inspect the vibration shrapnel for breakage, remove or replace it, or send it to the manufacturer for repair or a good amount of shrapnel.
â—Ž If there is any loose or loose screw, re-fix or tighten it.
â—Ž Check if there is any foreign matter inside the console and remove it