For aerial vehicles (such as airplanes, rockets, missiles, etc.), the directions and attitudes during the flight can be described by three angles: the top of the aircraft heads down (ie, the aircraft rotates about a horizontal axis perpendicular to the direction of flight) ) can be represented by a pitch angle; the left and right swings of the aircraft's head (ie, rotation about the vertical axis) can be represented by yaw angles; the rotation of the aircraft around its longitudinal axis can be represented by roll angles. At least three gyroscopes are used for three angles, that is, two gyroscopes that rotate about vertical and horizontal axes. Due to the fixed-axis nature of the high-speed rotor, the directions of the two axes remain the same regardless of the movement of the aircraft. Therefore, the two axes are two axes. Can be used as vertical and horizontal reference lines respectively. The above three angles can be measured through the angles between the inner and outer frames of the gyroscope and the corresponding axes and bases. For example, the roll angle and pitch angle of the aircraft can be The vertical reference line is measured on the gyroscope of the shaft, and the yaw angle can be measured on the gyroscope with the horizontal reference line as the axis of rotation. The measured signal is transmitted to the computer system and the command can be issued to correct the flight of the aircraft at any time. The direction and posture.
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