振动和冲击传感器的校准方法.第41部分:激光振动计的校准

[中文适用范围]： 本ISO 16063第41部分规定了在典型频率范围0.4 Hz至50 kHz内对直线式激光测振仪进行一级和二级校准的仪器和程序。它规定了用于校准激光测振仪或机械振动传感器的激光测振仪标准（在认可或非认可的校准实验室中）的校准，以及通过激光测振仪标准或通过与通过激光干涉法校准的参考传感器进行比较来校准激光测振仪的校准。仪器规范包含对激光测振仪标准的要求。直线式激光测振仪如果设计为激光光学传感器（带有或不带有指示仪器），用于感知位移或速度的运动量并将其转换为成比例的（即随时间变化的）电信号，则可根据本ISO 16063第41部分进行校准。这些输出信号对于激光测振仪标准通常是数字的，对于激光测振仪通常是模拟的。激光测振仪的输出信号或读数可以是振幅，此外偶尔也可以是运动量的相位差（包括加速度）。在本ISO 16063第41部分中，明确规定了复灵敏度模值的校准（相位校准见附录D）。注：激光测振仪可用于测量兆赫和吉赫范围内的振动。迄今为止，尚无可用于产生如此高频率的振动激励器。这些激光测振仪的校准可以通过利用适当的合成多普勒信号对其信号处理子系统进行电气校准来估算，前提条件是：待校准的激光测振仪的光学子系统已被证明符合与5.5.3中给出的要求相当的定义要求；合成多普勒信号作为光电探测器输出的等效替代品生成。这种方法的更详细规范（见参考文献[25]）不在本ISO 16063第41部分的范围内。 [外文原描述]： ISO 16063-41:2011 specifies the instrumentation and procedures for performing primary and secondary calibrations of rectilinear laser vibrometers in the frequency range typically between 0,4 Hz and 50 kHz. It specifies the calibration of laser vibrometer standards designated for the calibration of either laser vibrometers or mechanical vibration transducers in accredited or non-accredited calibration laboratories, as well as the calibration of laser vibrometers by a laser vibrometer standard or by comparison to a reference transducer calibrated by laser interferometry. The specification of the instrumentation contains requirements on laser vibrometer standards. Rectilinear laser vibrometers can be calibrated in accordance with ISO 16063-41:2011 if they are designed as laser optical transducers with, or without, an indicating instrument to sense the motion quantities of displacement or velocity, and to transform them into proportional (i.e. time-dependent) electrical output signals. These output signals are typically digital for laser vibrometer standards and usually analogue for laser vibrometers. The output signal or the reading of a laser vibrometer can be the amplitude and, in addition, occasionally the phase shift of the motion quantity (acceleration included). In ISO 16063-41:2011 the modulus calibration is explicitly specified.