Measuring method of heading angle and pitch angle rate of rotating projectile

Abstract

The invention provides a method for measuring the angular speeds of a course angle and a pitching angle of a spinning projectile, and relates to the technical field of spinning projectile attitude measurement. A sensor unit is included and comprises acceleration sensors for two axes. The acceleration sensors are used for measuring the accelerations in two directions perpendicular to a sensitive axis and outputting the accelerations to a processing circuit. The processing circuit receives the measurement results outputted by the acceleration sensors for the two axes, and calculates the angular speeds of the course angle and the pitching angle of the spinning projectile in a trajectory. According to the method, the acceleration sensors serve as the core measurement devices for the angular speeds of the course angle and the pitching angle, the size of a measurement device is effectively reduced, cost is reduced, and the measurement device can adapt to the special environments of the spinning projectile trajectory in all stages, and is free of external electric disturbance and external magnetic disturbance.

Description

technical field [0001] The invention relates to the technical field of measuring the heading angle and pitch angle rate of a rotating projectile. Background technique [0002] With the development of modern warfare towards localization and precision, intelligent and precise control of ammunition has become an important research direction. Rotating projectiles rotate by themselves to overcome the ballistic dispersion caused by thrust eccentricity, mass eccentricity, aerodynamic eccentricity, etc., and have strong anti-interference ability, which is favored by scientific researchers. Since the high-speed rotating projectile needs to go through extremely harsh and extreme physical processes such as high impact and high dynamics in the process of ejection, flight, and penetration, it has become a major problem to accurately monitor and control the attitude of the rotating projectile in real time. [0003] At present, the method for measuring the attitude of the rotating bomb ca...

AI Technical Summary

Problems solved by technology

Among them, the geomagnetic sensor method has the advantages of autonomous navigation, and its error does not accumulate over time, which cannot be overlooked by inertial sensors. However, it requires no electrical and magnetic interference, which is obviously difficult to meet in actual combat; the gyroscope method, A large number of applications in autonomous navigation, but optical gyroscopes and mechanical gyroscopes are difficult to meet the high-impact needs of rotating bullets in the process of ejection and penetration. Vibrating beam gyroscopes and MEMS gyroscopes have the potential to resist impact. However, due to the high-speed spin (1800rad / s) of the rotating projectile will produce serious inter-axis interference, it is difficult to measure the attitude of the rotating projectile; Two accelerometer methods, etc., under the same conditions, these methods are large in size and high in cost

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