Study On Application Of Dynamic High Type Method In Tracking Servo System Of Theodolite

With the increase of the velocity and acceleration of the moving target, it produces a large accretion of dynamic error of O-E theodolite. The control methods in existence can not suffice for the needs of tracking precision bit by bit. How to improve the tracking precision has come to be the disquisitive highlight recently. A dynamic high type control method is introduced in this dissertation. It can minish the dynamic error greatly by using this method.Firstly, developments of optic measuring instruments' servo systems are put forward in the dissertation and significances of the dissertation are set forth. Mathematic models of servo system are set up and simulation diagrams are established with SIMULINK.Application of dynamic high type control method in the servo system of O-E theodolite is discussed in detail in the dissertation. A method differing from the former is brought forward. Why dynamic high type control method can improve tracking precision is analyzed in theory and effects on dynamic performances of the method are analyzed, too. A mathematic simulation is carried out.In order to deduce the effects on dynamic performances, a method by using prediction filter is introduced. To minish overshoot subsection of input signal with exponent is adopted. These methods are proved by mathematic simulation.Lastly, the theories discussed in this dissertation are tested with experiments. The experiment results are same as the simulation results, which verifies that the dynamic high type control method discussed in the dissertation is correct and it is very valuable for engineering. Aiming at the problems in the experiments some opinions and possible solutions are advanced.