Method to improve the capability of electro-optical theodolite to track fast moving target

摘要

Considering system stability, the tracking servo system of electro-optical theodolite is often designed as type I servo system. In principle steady state velocity error and acceleration error exist in it. Especially when tracking fast moving targets, the tracking error will become bigger. To minimize the tracking error a higher order servo system can be used. However, it is very difficult to keep such servo system stable. In this paper a kind of dynamic type II servo system according to Fuzzy logic theory was designed to solve the above contradiction successively.