Electric control rotating platform and position measuring method for inertial navigation instrument

Abstract

The invention provides an electric control rotating platform and a position measuring method for an inertial navigation instrument. The lower platform body of the rotating platform is directly connected with a measurement carrier; a support bracket, the outer platform body of the rotating platform and an outer adjusting bracket are fixedly connected to the lower platform body of the rotating platform; the support bracket is contacted with the outer ring of an angular contact bearing for positioning; a hollow shaft is connected with the inner ring of the angular contact bearing; the inner rings of two pairs of angular contact bearings are positioned by two tightening nuts; a positioning bracket is fixedly connected with the hollow shaft and a plurality of stages of spirally variable rotors are positioned at the same time; a plurality of stages of spirally variable stators are fixedly connected with the outer platform body of the rotating platform; a worm wheel is fixedly connected to the positioning bracket; a worm is connected with the outer adjusting bracket through double-end bearing support; and the output shaft of a stepping motor is connected with the input shaft of the worm by a coupling. The electric control rotating platform is small in error and high in precision, provides a solution for the precise rotation and the position measurement of the inertial navigation instrument, and simultaneously provides the guarantee for the accurate and reliable measurement of the inertial navigation instrument.

Description

technical field [0001] The invention relates to a position measuring device, in particular to an electronically controlled rotating platform used with an inertial navigation instrument. The invention also relates to a position measurement method of an electronically controlled rotating platform based on an inertial navigation instrument. Background technique [0002] In recent years, with the development of inertial technology, platform-type inertial navigation instruments have gradually withdrawn from the stage, and strap-down inertial navigation instruments have become the mainstream of inertial navigation systems. In order to eliminate the constant value error of the gyroscope, the core component of the inertial navigation system, the system can be fixed on the rotating platform, and the solution can be solved by rotating multiple positions to eliminate the constant value error of the gyroscope, thereby realizing north-seeking and strapdown navigation solution . Therefo...

AI Technical Summary

Problems solved by technology

This kind of turntable often does not have self-locking ability, and an external brake or locking mechanism is required to prevent changes during work. In order to reduce motion hysteresis, the processing requirements for gears are relatively high, which increases manufacturing costs.

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