Inertial attitude measurement apparatus for high-speed rotating carrier

Abstract

The invention discloses an inertial attitude measurement apparatus for a high-speed rotating carrier, and belongs to the technical field of an inertial attitude measurement apparatus. The apparatus includes a gas gyroscope used for measuring the angular rate in a rolling axis direction and two rate gyroscopes used for measurement in yawing and pitching directions. The apparatus can measure the roll angle, yaw angle and pitch angle and triaxial angular velocity of a high-speed rotating carrier in real time. The roll angle measurement error of the apparatus only depends on the drift rate of theroll gas gyroscope and isn't fast diverged with time. The attitude is accurately measured when the carrier rotates at a high speed. The apparatus is simple in structure and manufacture process, low incost, small in size, and good in crypticity and reliability. The apparatus works, depending on the devices of itself and can work without limitation by meteorological conditions.

Description

technical field [0001] The invention belongs to the technical field of inertial attitude measuring devices, and relates to an inertial attitude measuring device for a high-speed rotating body based on a rolling gas gyroscope and a rate gyroscope. Background technique [0002] High-speed rotation is the most commonly used stability control method for some new precision-guided munitions and most conventional munitions. Therefore, under the condition of high-speed rotation of the carrier, how to accurately measure the attitude information of the ammunition and then effectively guide and control it has become a high-speed The key problems to be solved in the research and development of rotary precision guided munitions. At present, for measuring the flight attitude parameters of high-speed rotating projectiles, the technical solutions that can be adopted at home and abroad are as follows: [0003] (1) Geomagnetic attitude measurement method [0004] In a certain area of ​​the ...

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Problems solved by technology

Chinese patent (CN105674815A) discloses a geomagnetic attitude measurement method using two biaxial geomagnetic sensors to complete the attitude measurement of the projectile. Its advantages are: simple principle, small size, low cost, strong resistance to high overload, and high frequency response. It can work around the clock, and the error does not accumulate over time; the disadvantage is that the corresponding cabin of the projectile needs to have a non-magnetic environment, which is easily disturbed by the external magnetic field, and cannot work normally in a special attitude direction (such as a paramagnetic direction)

However, for high-speed rotating carriers, the main problem is that the range and accuracy of the large-range gyroscopes currently used to measure the roll angular velocity are still relatively low, and the attitude error accumulates rapidly with time after integration, and the accuracy is poor when working for a long time

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