Research On Three Ship-Based Axles Stabilization And Tracking Platform Of ATP System

Laser communication in atmosphere is a good choice for communication network among formation of ships. For reliable communication, ATP (Acquisition, Pointing and Tracking) technology is need in laser communication. The function of ATP system is to realize acquisition, pointing and tracking, connect communication ports between two ships by sending laser. Because of complex environment on the sea, and sway of ships, it is difficult to realize fast and accuracy acquisition, pointing and tracking, we need a better stabilization and tracking platform to isolate the sway of ships, keep all system stabilization and fast tracking, so research for better stabilization and tracking platform with high accuracy and fast speed is very important to realize ATP technology.This paper is according to three ship-based axles stabilization and tracking platform, studies emphatically on three parts following. First in this paper emphasized some question which should be pay much attention to in design this kind of serve system, then design a kind of stabilization and tracking platform and analyse it support by CAD software (Ansys and Pro/e), select motor and gear according to the guide line of wind-load received by the platform and other loads. Deduced transfer function of all parts of system. At last we used classical PID law add with other disturbance in simulation of system, point out shortage of PID law in having lag in step signal and sine wave signal response, put forward use BP-neural-PID law in tracking model, design a neural controller and using it in simulation of tracking system. The simulation results show the effectiveness of the proposed scheme.