Abstract: The present application discloses a vibration table, comprising a magnetic circuit device for generating a magnetic field; a moving coil skeleton, disposed in the magnetic circuit device, moving up and down in the magnetic field and having a placement groove; an adapter, disposed in the placement groove; an excitation coil, radially winding along an outer peripheral wall of the moving coil skeleton and located in the magnetic field generated by the magnetic circuit device; wherein, the moving coil skeleton is provided with a cut-off groove. The vibration table provided in the present application uses a metal beryllium as a material for a moving coil skeleton and an accelerometer adapter. The large specific stiffness of the metal beryllium is used to increase the axial natural frequency of the moving coil skeleton, thereby increasing the effective working frequency range of the vibration table.

Abstract: A calibration method and system for a lubrication oil metal debris sensor includes applying an excitation to the lubrication oil metal debris sensor to be calibrated, obtaining a second output signal from the lubrication oil metal debris sensor to be calibrated based on a test metal ball with a known diameter, and determining a sensitivity characteristic parameter of the lubrication oil metal debris sensor to be calibrated according to the diameter of the test metal ball with the known diameter, the second output signal, and a preset data processing model. Large particulate metal balls with large diameter are used as calibration particles. The calibration performed by the combination of the particulate metal ball and the data processing model helps when the signal processing circuit cannot be matched with the actual performance of the sensor and avoids an underestimation of the monitoring capability of the lubrication oil metal debris sensor.

Abstract: The present application discloses a vibration table, comprising a magnetic circuit device for generating a magnetic field; a moving coil skeleton, disposed in the magnetic circuit device, moving up and down in the magnetic field and having a placement groove; an adapter, disposed in the placement groove; an excitation coil, radially winding along an outer peripheral wall of the moving coil skeleton and located in the magnetic field generated by the magnetic circuit device; wherein, the moving coil skeleton is provided with a cut-off groove. The vibration table provided in the present application uses a metal beryllium as a material for a moving coil skeleton and an accelerometer adapter. The large specific stiffness of the metal beryllium is used to increase the axial natural frequency of the moving coil skeleton, thereby increasing the effective working frequency range of the vibration table.

Abstract: A calibration method and system for a lubrication oil metal debris sensor includes applying an excitation to the lubrication oil metal debris sensor to be calibrated, obtaining a second output signal from the lubrication oil metal debris sensor to be calibrated based on a test metal ball with a known diameter, and determining a sensitivity characteristic parameter of the lubrication oil metal debris sensor to be calibrated according to the diameter of the test metal ball with the known diameter, the second output signal, and a preset data processing model. Large particulate metal balls with large diameter are used as calibration particles. The calibration performed by the combination of the particulate metal ball and the data processing model helps when the signal processing circuit cannot be matched with the actual performance of the sensor and avoids an underestimation of the monitoring capability of the lubrication oil metal debris sensor.