A method using relative distance as penalty factor to construct penalty function is presented. Combined with float encoding genetic algorithms, it successfully solve the optimization problem with constrains. Then by using this method, the light weight optimization design is taken for the straight lug of the main joint of horizontal stabilizer control screw of an aircraft. On the premise that the original fatigue margin keeps the same, the weight is reduced 22.7% , meanwhile, the optimal solution correspond to different fatigue margin is given to provide a reference for engineering design.%以茚、甲酸和双氧水为原料,经加成、消除、肟化和加氢还原后得到2-氨基茚满,总收率为63.4％.该法原料易得、操作简便、收率高,各主要化合物结构经核磁共振氢谱确证.
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