| 摘要 |
PURPOSE:To eliminate a transient detection error by constituting an error correction part so that a signal showing the deviation of a target traveling body direction from an optical center axis is added to the signal showing the direction of the optical center axis of an optical detector. CONSTITUTION:The angle deviations of the transient optical center axis 1 causing delayed call time of the following servo system and the direction 2 of discrimination radiation light from a target traveling body are converted by optical detector 3 into electric signals that correspond to the angle deviation values and they are input to error correction part 8. On the other hand, the rotary angle of optical detector 3 to chassis 7 is detected by rotary angle detector 6 as an electric signal, which is input to error correction part 8. Error correction part 8 adds the output signal of rotary angle detector 6 to the output signal of optical detector 3 at an adequate ratio, so that direction 2 of the discrimination radiation light from the target traveling body can be detected. |
