Reliable operation of mechanical sensors of the angular velocity and linear acceleration in modern conditions is possible only when their stable operation under effect of the external factors has been provided. The mechanical effects-broadband (sinusoidal) vibration and the shock on the experimental samples of micromechanical accelerometers (MMA) on the vibration stand LDS V455 have been studied. The obtained amplitude-frequency characteristics (AFC) of the experimental samples can be used to characterize their quality. The high quality, has been reflected in the linearity of the frequency response in a fairly wide frequency range and in absence the resonant peaks. To achieve this, it is necessary to work out the technology of manufacturing samples. The areas of application of the MMA samples can be selected according to the AFC type obtained for them. The shock pulses can be approximated by a series of semi-sinusoidal pulses with the duration equal to half the period of the sine function. With the help of a vibrating table the intensity and duration of the impact have been set. The results of the experiments have shown that the shock load is worked out differently for MMA samples, calculated for different ranges of the measured acceleration values. From the data obtained it can be seen that the output signal of the MMA samples to acceleration measurement range ±1.2 is limited from above, the output signal of the MMA samples in the range up to ±5 g is not included into a specified profile. It has been determined that MMA PLU 5-17 samples fulfill well the impact profile. The selection of permissible impact loads on the MMA samples should be made based on the feedback, i.e. the output signal on the impact.
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