Indexing mechanism of ultrasonic wave motor based high-precision miniaturized fiber optic gyroscope north finder

Abstract

The invention discloses an indexing mechanism of an ultrasonic wave motor based high-precision miniaturized fiber optic gyroscope north finder. According to the invention, the indexing mechanism of the fiber optic gyroscope north finder is designed by adopting a precise driving technique, and an ultrasonic motor is introduced for the first time to design the brand new indexing mechanism to replace the traditional complex mechanical type indexing mechanism and a locking mechanism, so that the structure of the indexing mechanism can be simplified greatly; the fiber optic gyroscope north finder formed by adopting the indexing mechanism can greatly reduce the size and weight of the north finder under the condition of not reducing the north finding precision, and fill the miniaturization and light weight technical blanks of the current indexing mechanism of the high-precision north finder.

Description

technical field [0001] The invention relates to the field of inertial navigation technology and measuring equipment, in particular to a high-precision and miniaturized optical fiber gyro north-finder indexing mechanism based on an ultrasonic motor. Background technique [0002] The gyro north finder is an inertial measurement system that uses a gyroscope to measure the projection direction of the earth's rotation angular rate on the local horizontal plane (ie, the true north position). Gyroscopic north finders are precision inertial measurement instruments widely used to provide orientation references for mobile weapon systems such as artillery, surface-to-surface missiles, and ground-based radars. [0003] At present, the gyro north finder usually adopts the multi-position north finding method. During the implementation process, the gyro needs to be driven by moving parts to rotate to the specified position. After the indexing is completed, a locking mechanism is needed to...

AI Technical Summary

Problems solved by technology

Although this mechanical indexing gyro north-finder has high north-seeking accuracy, its structure is complicated, which not only requires high processing and assembly technology, but also makes the north-finder large in size and heavy in weight, which cannot be portable in the field. , The use requirements in the weight and volume sensitive environment greatly limit the application range of the gyro north finder

In addition, due to the use of electromagnetic motor drive, the electromagnetic radiation generated by the motor will also affect the measurement accuracy of the gyro, which will objectively restrict the further improvement of the north-finding accuracy of the gyro north-finder

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