In this paper , the mathematics model and simulation model of the passive landing gear shock absorber was built , and was verified by drop test . aimed at acquiring suitable efficiency diagrams , two simple semi - active control algorithms were designed . the mathematics model and simulation model of the semi - active landing gear shock absorber was built 在本文中,建立了被動控制起落架緩沖系統(tǒng)數(shù)學(xué)模型和仿真模型,并通過落震試驗(yàn)對該模型進(jìn)行參數(shù)校驗(yàn);以合適的功量圖為控制目標(biāo)設(shè)計出兩種半主動簡單控制律,建立了半主動控制起落架緩沖器數(shù)學(xué)模型和仿真模型;通過數(shù)字仿真對這兩種控制方法進(jìn)行了比較,認(rèn)為半主動控制較被動控制有很大的優(yōu)越性。