Double-shaft decoupling acceleration dynamic calibration bench controlled through sine displacement

Abstract

Disclosed is a double-shaft decoupling acceleration dynamic calibration bench controlled through sine displacement. The double-shaft decoupling acceleration dynamic calibration bench comprises a calibration bench for disposing an accelerometer thereon and an actuator connected with the calibration bench for realizing sine displacement motion along a y direction. Flexible hinges are connected with the two sides, which are vertical to an actuation surface, of the calibration bench, i.e., the y direction, maintain sine displacement motion of the calibration bench along the y direction through deformation, and limit the motion of the calibration bench along an x direction. The flexible hinges and the actuator are fixed in an outer frame, and the outer frame is externally provided with the actuator which realizes sine displacement motion of inside parts along the x direction. The other two flexible hinges are fixed on the base in the x direction, have inner sides fixed on the outer frame, maintain sine displacement motion of the inside parts along the x direction through deformation, and limit the motion of the calibration bench along an x direction, and limit motion along the y direction. The method provided by the invention can realize double-shaft decoupling dynamic calibration of the accelerometer under sine displacement control.

Description

technical field [0001] The invention relates to a dual-axis acceleration dynamic calibration platform, in particular to a dual-axis decoupling acceleration dynamic calibration platform controlled by sinusoidal displacement. Background technique [0002] As an important sensing and measuring device, the acceleration sensor is widely used in aerospace, automotive engineering, earthquake monitoring and other fields. Its accuracy and reliability are directly related to the accuracy of the final execution results, and the calibration of the acceleration sensor is a An important means to ensure the credibility of the results. At the same time, with the continuous development of science and technology, the accuracy of the accelerometers developed in my country is getting higher and higher, and some resolutions can reach 1μg, so the resolution of the accelerometer calibration table is highly required. At present, two-dimensional acceleration calibration tables generally have the ph...

AI Technical Summary

Problems solved by technology

At present, two-dimensional acceleration calibration tables generally have the phenomenon of biaxial coupling, which affects the calibration process, making the calibration results of small accelerations not ideal.

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