Translocation and location mechanism for inertial navigation system

Abstract

The invention discloses a translocation and location mechanism for an inertial navigation system. The translocation and location mechanism comprises a translocation controller, a table body, a rotarytransformer, a torque motor, a location disc and an electromagnetic lock, wherein the electromagnetic lock comprises a lock body and a lock core; the location disc is an involute cylindrical gear witha tooth profile angle of alpha; a lock head of the lock core comprises a first circular truncated cone section, a second circular truncated cone section and a cylindrical section which are coaxial with each other from the front end to the rear end, and a large bottom surface of the first circular truncated cone section and a small bottom surface of the second circular truncated cone section havesame diameter and are connected with each other; a large bottom surface of the second circular truncated cone section and the cylindrical section have same diameter, and the large bottom surface of the second circular truncated cone section is connected with one bottom surface of the cylindrical section; a top angle of a cone extending from the second circular truncated cone section is an angle beta of the lock head, and beta is equal to 2alpha; and the translocation controller can control a stretchable mechanism to drive the lock core to extend out of the lock body after the table body reaches a target angle, so that the lock head of the lock core is clamped into a tooth groove of the positioning disc. By adopting the translocation and location mechanism, the angle deviation of the location disc caused by inertia in the location process can be corrected, and the location precision can be improved.

Description

technical field [0001] The invention relates to an indexing and positioning mechanism used in an inertial navigation system. Background technique [0002] Inertial Navigation System (INS, referred to as inertial navigation system) is an autonomous navigation system that does not depend on external information and does not radiate energy to the outside. The basic working principle of inertial navigation is based on Newton's laws of mechanics, using inertial components (gyro and accelerometer) to measure the acceleration of the carrier, integrating it with time, and changing it into the navigation coordinate system, you can get Information such as speed, yaw angle and position in the navigation coordinate system. [0003] Since both the accelerometer and the gyroscope have a certain zero bias and the instability of the scale factor, their measured values ​​are in error. In order to improve the accuracy of the inertial device, the gyroscope and the accelerometer are often inst...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the above-mentioned prior art, the present invention provides an indexing and positioning mechanism for inertial navigation systems, which solves the technical problem of lowering precision due to inertia in the prior art, and can correct positioning discs caused by inertia during the positioning process. Angle deviation, improve positioning accuracy

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