Research on the Measurement Method of Improving Precision of the Drawing-line Speed Detector

摘要

It is high vibrate-speed in the beginning of the set-off phase of a large size aircraft(such as the rocked, the missik, the unmanned aircraft, the target aircraft etc.). The measurement of shooting speed of a large size object is difficult because of the short shooting time, the big trembling, the complex measure-circumstance and the high reliability measurement system requested. The precision of the measurement of is very high, for it is separated from the object and not apt to suffer from the interference, up to now it is still used as the military instrument. A new method used the photoelectric sensor instead of the hall effect sensor was presented in this paper through the error analysis and comparison of all angle measurement sensors, the method can enhance the resolution and improve the precision of the drawing-line speed detector. The relative error of the system would be kss than 0.0032% by the theoretic analysis in the speed of 50 mis. It is predicted that the m ethod is available for practical m easurement.