| Coarse tracking turntable in the APT system is an important part, in order to meet the high orbit LEO satellite communications satellite is the technical requirements of the turntable, this first study of the near space environment LEO satellites, the use of STK software and LEO satellite high orbit satellite communications operating state when the feasibility analysis to determine the technical specifications of this article. According to international surveys, to determine this structure. And the use of this structure on LEO satellite tracking turntable with a thick structural design, technical specifications meet the system case, the lightweight design; while using multi-channel closed-loop control design of the coarse tracking control unit, allowing the system to achieve a coarse tracking turntable alignment, tracking.In this paper, the structural model of coarse tracking turntable software using ANSYS Workbench key components of the analysis and simulation, the servo system control unit to the overall open-loop system state and the state of compensation and phase-frequency characteristics of amplitude-frequency analysis. The results show that a reasonable turntable system design, the overall structure is compact, the system’s tracking bandwidth to meet the system requirements. |
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