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建立了着陆器的参数化模型,把着陆碰撞过程简化为弹簧阻尼模型,将其中的刚度、阻尼、非线性指数和最大穿透深度作为修正参数;定义了判断着陆器是否翻倒的着陆稳定性平面.基于地面稳定性试验结果,利用ADAMS和Isight软件联合仿真,采用优化拉丁方试验设计缩小修正参数范围.基于模型修正理论,采用自适应模拟退火算法进行模型参数修正,修正效果明显,修正后的仿真模型更符合实际试验样机.
A parametric model of the lander is established. The landing collision process is simplified as a spring damping model, and the stiffness, damping, nonlinear index and maximum penetration depth are taken as the correction parameters. The landing stability for determining whether the lander is overturned is defined Plane.According to the results of ground stability test, using ADAMS and Isight software co-simulation, the modified Latin square experimental design is used to narrow the range of correction parameters.According to the model modification theory, the adaptive simulated annealing algorithm is used to modify the model parameters, the correction effect is obvious. The simulation model is more in line with the actual test prototype.