| 摘要 |
PURPOSE:To stably control the advancing direction of a body to be induced, by finding variations of the optical axis of the optical system of the induction device and the speed of the angle of rotation of a target image in optical images. CONSTITUTION:A two-dimensional image formed by an optical system 2 is taken by an image pickup tube 3, and the image is photoelectrically converted by scanning the photosensitive p lane of the pickup tube 3 with a horizontal scanning signal (a) and a vertical scanning (b) from a scanning signal generator 4. The dark point of the output of the pickup tube 3 is detected 5 and 6 and sample-held 7-10, and then, inputted into a center detector 11 and an angle of rotation detector 15. The detector 11 detects a voltage which corresponds to the error angle of the center point E of the image of a target object B from the center point of the photosensitive plane A from points C and D where the image B changes, and the voltage is amplified 12 and 13. Then, a turntable 14 is rotated by horizontal angle alpha and a vertical angle beta, and the center point E of the image B is brought to a position which coincides with a n optical axis A. The detector 15 detects an angle theta formed by a line CD with the horizontal scanning line, and finds the angle of rotation from the angle theta and controls each control wings 21-23 of an induced flying body through control wing controllers 18-20. Thus horizontal and vertical advancing directions and inclined angles of control wings are controlled. |
