A dual-axis indexing mechanism for position calibration of strapdown inertial navigation system

Abstract

The invention discloses a double-shaft indexing mechanism used for strapdown inertial navigation system position marking, and belongs to the field of servo control. The double-shaft indexing mechanismcomprises a base body, an upper cover assembly, an outer frame assembly and an inner frame assembly, conversion of the locking state and the working state of the inner frame assembly and the outer frame assembly is achieved through matched work of the upper cover assembly and the outer frame assembly, and position marking of an inertia measurement assembly is achieved through orthogonal rotationof the outer frame assembly and the inner frame assembly. By means of the double-shaft indexing mechanism, the inner frame assembly, the outer frame assembly and the inertia measurement assembly are subject to integrated design and structure optimization, the size of the double-shaft indexing mechanism is greatly decreased, the installing difficulty is reduced, the indexing function of the inertiameasurement assembly in an orthogonal shaft system is effectively achieved, the problem that dismounting is needed during position marking of the inertia measurement assembly is solved, the marking efficiency of the inertia measurement assembly is greatly improved, and the practicability and the convenience of a strapdown inertial navigation system are improved.

Description

technical field [0001] The invention belongs to the field of servo control, and in particular relates to a double-axis indexing mechanism used for position calibration of a strapdown inertial navigation system. Background technique [0002] The inertial navigation system (referred to as "inertial navigation system") is the core of the aircraft control system, providing guarantee for the accuracy and performance of the aircraft. With the continuous development of aircraft technology, there are more requirements for the accuracy of the inertial navigation system. It also promotes the further development of the inertial navigation system. [0003] The existing inertial navigation systems mainly include strapdown inertial navigation systems, analytical inertial navigation systems and semi-analytic inertial navigation systems. Among them, the analytical inertial navigation system is an inertial compliance system in which the platform is stable in the inertial space. It directly ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a dual-axis indexing mechanism for position calibration of a strapdown inertial navigation system, wherein the ground calibration turntable is optimized and integrated into the dual-axis indexing mechanism, by The indexing of the biaxial indexing mechanism directly realizes the automatic calibration of the inertial measurement components, which effectively solves the problem that the inertial measurement components of the strapdown inertial navigation system need frequent calibration and maintenance, reduces the maintenance cost of the inertial measurement components, and improves Improve the efficiency of the strapdown inertial navigation system, reduce the application cost of the strapdown inertial navigation system, and promote the further development of the strapdown inertial navigation system

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