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基于LVDS的電子星模擬器設計
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北京軒宇空間科技有限公司

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TP274

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Design Of Electronic Star Simulator Based On LVDS
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    摘要:

    為了實(shí)現衛星姿軌控地面半物理仿真試驗,設計了基于LVDS(Low Voltage Differential Signaling)的電子星模擬器,圖像分辨率支持1024*1024;圖像位寬支持12bit;能夠同時(shí)完成幀頻10Hz的圖像上傳及采集。將星敏感器作為高精度姿態(tài)測量部件引入控制系統,地面動(dòng)力學(xué)通過(guò)以太網(wǎng)將四元數提供給電子星模擬器,電子星模擬器將生成的電子星圖通過(guò)LVDS傳輸給星敏感器,通過(guò)地面實(shí)時(shí)系統將控制系統、星務(wù)計算機、敏感器系統組成了實(shí)時(shí)仿真驗證系統。試驗表明電子星模的輸出接近目標值,閉環(huán)測試中星敏采集到準確的星圖。通過(guò)實(shí)物在閉環(huán)回路仿真驗證了上述方案的有效性,并通過(guò)指標對比分析,顯示了電子星模擬器的可行性,在衛星姿軌控地面半物理仿真試驗中具有良好的推廣性。

    Abstract:

    In order to realize the ground semi physical simulation test of satellite attitude and orbit control, an electronic satellite simulator based on LVDS (Low Voltage Differential Signaling) is designed, and the image resolution supports 1024 * 1024; The image bit width supports 12bit; It can upload and collect images with a frame rate of 10Hz. The star sensor is introduced into the control system as a high-precision attitude measurement component. The ground dynamics provides the quaternion to the electronic star simulator through Ethernet. The electronic star simulator transmits the generated electronic star map to the star sensor through LVDS. The real-time simulation verification system is composed of the control system, satellite computer and sensor system through the ground real-time system. The experiment shows that the output of the electronic star model is close to the target value, and the star sensor collects the accurate star map in the closed-loop test. The effectiveness of the above scheme is verified by the physical simulation in the closed-loop. Through the comparative analysis of indicators, it shows the feasibility of the electronic satellite simulator, which has good popularization in the ground semi physical simulation test of satellite attitude and orbit control.

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唐永學(xué),朱桂梅,郝亮.基于LVDS的電子星模擬器設計計算機測量與控制[J].,2022,30(2):263-268.

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歷史
  • 收稿日期:2021-09-08
  • 最后修改日期:2021-10-14
  • 錄用日期:2021-10-14
  • 在線(xiàn)發(fā)布日期: 2022-02-22
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