着陆器变阻尼缓冲器性能分析及参数优化

In order to analyze soft landing performance of typical legged lander with variable damping buffer, the dynamic simulation model of lander was established. Based on the simulation model, the soft landing performance of the lander in the uncertain landing environment was analyzed by using Monte Carlo method. The sample points were obtained by using dynamic simulation model and optimized Latin hypercube experiment design, and the incomplete three-order polynomial response surface surrogate models which reflects the complex relationship among the configuration parameters of landing gear, the landing environment parameters and the values reflecting the soft landing performance were established. In order to obtain the variable damping buffer with best performance, the buffer characteristic parameters of the variable damping buffer were optimized by combining the response surface model, Monte Carlo method and non-dominated sorting genetic algorithm Ⅱ(NSGA-Ⅱ). The simulation model verification shows that the optimized soft landing performance of lander with variable damping buffer is enhanced.