Design of Automatic Leveling and Centering System Based on Error Correction and Compensation Algorithm

Because of the interaction of leveling and centering, the operation repeats many times; Angle measurement error caused by the leveling and centering is not compensated and corrected. Aimed at defects such as low precision, long time, low intellectualization and no compensation in traditional method of leveling and centering, automatic leveling and centering system of theodolite is designed based on the algorithm of error correction and compensation. Using the method of coordinate transformation, horizontal angle error caused by tilt error are analyzed, and the exact mathematical compensation formulas are given. The structure and operating principle of automatic leveling and centering system based on the algorithm are set forth. The compensation algorithm is used for compensating the horizontal and vertical angle effectively. Experiments show that the centering precision reaches 0.04mm through error compensation, and the angle measuring error caused by leveling error is less than 0.5 ''. The system can effectively avoid leveling and centering many times, shorten the equipment set-up time, and improve angle measurement precision.