衰减水平测量中水平运动贡献的悬挂地震计概念的模拟和实验
Modeling and Experiment of the Suspended Seismometer Concept for Attenuating the Contribution of Tilt Motion in Horizontal Measurements
摘要：
惯性传感器中的倾斜-水平耦合限制了诸如用于引力波探测器的主动隔离系统的性能。惯性旋转传感器可用于从水平惯性传感器产生的信号中减去倾斜分量，但这种技术通常受到倾斜测量的传感器噪声的限制。一种不同的方法是对传输到水平惯性传感器的倾斜进行机械滤波，如本文所述。该技术不需要辅助旋转传感器，并且可以产生较低的噪声测量。研究的概念使用机械悬挂隔离惯性传感器从输入倾斜。建模和仿真表明，这种配置可以用于充分衰减传输到仪器的倾斜，同时保持感兴趣的频带中的平移灵敏度。实验结果表明，这种方法是一种可行的解决方案，以克服倾斜问题的主动惯性隔振领域的支持。
英文摘要：
Tilt-horizontal coupling in inertial sensors limits the performance of active isolation systems such as those used in gravitational wave detectors. Inertial rotation sensors can be used to subtract the tilt component from the signal produced by horizontal inertial sensors, but such techniques are often limited by the sensor noise of the tilt measurement. A different approach is to mechanically filter the tilt transmitted to the horizontal inertial sensor, as discussed in this article. This technique does not require an auxiliary rotation sensor, and can produce a lower noise measurement. The concept investigated uses a mechanical suspension to isolate the inertial sensor from input tilt. Modeling and simulations show that such a configuration can be used to adequately attenuate the tilt transmitted to the instrument, while maintaining translation sensitivity in the frequency band of interest. The analysis is supported by experimental results showing that this approach is a viable solution to overcome the tilt problem in the field of active inertial isolation.
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