Online full-redundancy mass and mass center measurement device based on upper weighing sensor and lower weighing sensor arranged in vertical mirror image mode

Abstract

An online full-redundancy mass and mass center measurement device based on an upper weighing sensor and a lower weighing sensor arranged in a vertical mirror image mode comprises a scale pan, weighing units which surround the scale pan and are of the same structure, two weighing sensor signal collection circuits independent of each other and a data processing and displaying system. The weighing units comprises the pair of weighing sensors, a support, a base and a support height adjustment block, wherein the weighing units are suitable for vertical mirror image positioning and installation, the base is used for fixing the support, the upper weighing sensor in the pair of weighing sensors is arranged on the scale pan, the lower weighing sensor in the pair of weighing sensors is arranged on the support, the scale pan and the support are respectively provided with standard pins and positioning pin holes, the standard pins and the positioning pin holes are used for installation of the upper weighing sensor and the lower weighing sensor, the weighing sensors are coupled together through force bearing coupling parts in a line or face tight contact mode, and the force bearing coupling part is restrained in the stable position and the stable state through force measurement parts or force measurement part transition connecting parts of the weighing sensors.

Description

technical field [0001] The invention relates to an online fully redundant mass center of mass measuring device based on a load cell installed in an upper and lower mirror image. Background technique [0002] The mass center of mass measurement device is mostly used in the measurement of the mass and mass center parameters of various weapon aircraft, space vehicles, rockets and rocket segments, etc., some of which are due to the importance and complexity of the process, and the mass center of mass measurement device is proposed. It meets the requirement of online full redundancy to ensure high reliability. For example, mass and centroid parameter tests in the assembly process of satellites and rockets, such tests are divided into multiple stages according to the assembly process, not only the measurement interval is long, but also it is difficult to restore the previous process. Reliability has extremely high requirements. [0003] Usually, the composition structure of a ma...

AI Technical Summary

Problems solved by technology

To realize the online full redundancy of the mass centroid measuring device, it is necessary to implement two complete and independent weighing units and measurement systems on one mass centroid measuring device. For the mass centroid measuring device with the above structure, due to the signal acquisition and The relationship between the data processing and display system and the weighing mechanism is relatively independent, so redundancy is easier to realize and the structure is relatively simple, and the weighing unit has a certain accuracy due to the close connection between the load cell, the weighing pan and the supporting mechanism. distribution size and structure requirements, so its redundancy mode can have a variety of options due to the different installation methods of the load cells. Different redundancy modes have different effects on the complexity of the device structure, the impact on the measurement accuracy, and the overall reliability of the system. There are big differences in the convenience of operation and the complexity of measurement data processing software.

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