Two-force-rod measuring foot structure and moment measuring platform

Abstract

According to the two-force-rod measuring foot structure and the moment measuring platform, the moment measuring platform comprises the multiple two-force-rod measuring foot structures and the object placing table, the object placing table is supported through the multiple two-force-rod measuring foot structures, and the load capacity of the object placing table is improved. Each two-force-rod measuring foot structure comprises a loading block, a rotating mechanism, a base and a measuring unit, the rotating mechanism comprises a first rotating structure and a second rotating structure, and the first rotating structure is arranged on the bottom surface of the loading block; the base is arranged below the loading block, and the second rotating structure is arranged on the top surface of the base; the measuring unit is made of an elastic material and is arranged between the first rotating structure and the second rotating structure. As the measuring unit is detachably locked with the first rotating structure and the second rotating structure, the torque measuring platform can meet the measuring requirement of a low-frequency or high-frequency vibration source by replacing different measuring units, and the testing capability of the torque measuring platform is expanded.

Description

technical field [0001] The invention relates to the field of micro-vibration measurement, in particular to a two-force rod measurement foot structure and a moment measurement platform. Background technique [0002] With the continuous improvement of the accuracy of optical facilities, the impact of vibration on them has become more and more significant. Small vibrations will cause serious interference to their pointing and imaging, so it is essential to conduct ground vibration detection on them. The force required to be measured in optical facilities ranges from a few N to several thousand N, which makes the measurement equipment need to have the characteristics of high precision, large load and large size. [0003] At present, most of the vibration sources are measured by piezoelectric structures, and the Stewart configuration is the most common representative. However, the loose structure of Stewart will inevitably reduce the fundamental frequency of the measurement platf...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the vibration sources use piezoelectric structures to measure the disturbance force, and the Stewart configuration is the most common representative. However, the loose structure of Stewart will inevitably reduce the fundamental frequency of the measurement platform. Although piezoelectric ceramics have good high-frequency Dynamic characteristics and high sensitivity, but its low-frequency dynamic characteristics often perform poorly

Since there is currently no measurement method that takes into account good high and low dynamic characteristics, if you want to accurately measure the disturbing force of high and low frequency vibration sources, you have to use two sets of equipment.

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