A method for measuring the center of mass of laser inertial group products

Abstract

Disclosed is a laser inertial measurement unit product mass center measurement method. First of all, three force transducers are placed on three coordinate measurement instruments, a three-dimensional coordinate system is established according to a laser inertial measurement unit, then one plane of the laser inertia is placed on the three force transducers, readings of the force transducers for placing the laser inertial measurement unit and under the condition of a zero load are respectively read, at the same time, coordinates of contact points between the force transducers and the laser inertial measurement unit are measured at the same time, mass center coordinates of the laser inertial measurement unit are measured once, and finally, and mean values of the mass center coordinates measured for multiple times are taken as final laser inertial measurement unit mass center coordinates. According to the method, through measuring gravity distribution and contact point coordinates of a laser inertial measurement unit to be measured, the masse center coordinates of the laser inertial measurement unit to be measured are obtained. Compared to the prior art, the method provided by the invention is simple to realize, easy to operate and high in precision.

Description

technical field [0001] The invention relates to a method for measuring the center of mass of a product, in particular to a method for measuring the center of mass of a laser inertial group product. Background technique [0002] The laser inertial group is a precision instrument that can measure the angular velocity and apparent acceleration of the carrier. It has been successfully used in launch vehicles, missiles, satellites, aircraft, ships and other civilian fields. Angular velocity and apparent acceleration information. In the laser inertial group, the important instruments are installed on the laser inertial group body, and the laser inertial group body components are installed on the box through several symmetrical and evenly distributed shock absorbers. In actual scenarios, the application of the laser inertial group requires that the mass center of the laser inertial group body components be consistent with its geometric center, otherwise it will affect the accuracy...

AI Technical Summary

Problems solved by technology

The suspension method is a method to determine the position of the center of mass by using the principle that the center of mass must pass the vertical plane of the suspension point when it is freely suspended. , the coordinates of the center of mass in the height direction are calculated by two swing measurements with different swing amplitudes. This method can only measure the coordinates of the center of mass in the height direction of the equipment, and the test process is complicated, with many operation steps, large errors and poor safety. Group and Body Centroid Measurement Requirements

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