A high-speed rotating carrier inertial attitude measurement device

Abstract

The invention discloses an inertial attitude measurement device for a high-speed rotating carrier, which belongs to the technical field of inertial attitude measurement devices. The device includes a gas gyroscope for measuring the angular rate of the roll axis direction and two yaw and pitch direction measurement devices. rate gyroscope. The device can complete the real-time measurement of the roll angle, yaw angle, pitch angle and three-axis angular velocity of the high-speed rotating carrier. The roll angle measurement error of this device only depends on the drift rate of the rolling gas gyroscope, and will not diverge rapidly with time. Accurate measurement of attitude is realized in the high-speed rotation environment of the carrier, and the structure and manufacturing process are simple, low cost, small in size, and the equipment completely relies on its own equipment to work, with good concealment, work is not restricted by weather conditions, and has high reliability.

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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