起落架疲劳试验过程中缓冲器压缩量不断变化，对应加载点位置需随动调整，为了完整模拟起落架的受载状态，保证试验快速运行，开展起落架缓冲器压缩量自调节及随动加载技术研究。研制具备航向、侧向、垂向及弹射随动加载能力的大载荷液压随动加载装置，基于MTS（mechanical testing & simulation）协调加载系统开发疲劳交互式加载控制技术，验证了起落架主结构在着舰滑行及弹射起飞过程中的承载能力。结果表明：各加载点位置可随着起落架缓冲器压缩量变化而随动调整，具有较高的控制及加载精度，且明显提升了试验效率，同时该技术及加载装置具有通用性，可用于不同类型的起落架静力／疲劳试验，具有一定的工程价值。

During the landing gear fatigue test, the compression of the buffer changes constantly, and the position of the corresponding loading point needs to be adjusted accordingly. To simulate the loading state of the landing gear completely and ensure the fast running of the test, the self-adjusting technology of the buffer compression and the follow loading technology of the landing gear were studied. A large load hydraulic servo loading device with heading, lateral, vertical and ejection follow loading capability was developed, also the fatigue interactive control loading control technology was developed based on mechanical testing & simulation(MTS) coordinated loading system, the bearing capacity of the main structure of the landing gear in the process of catapult launch and landing taxiing were verified. The results show that the position of each loading point can be adjusted with the change of the compression of the landing gear buffer, which has high control and loading accuracy, and significantly improves the test efficiency. Meanwhile, the technology and loading device are universal and can be used for static/fatigue tests of different types of landing gear, which has certain engineering value.