Inverse Calculate The Mechanical Prarameters Of Lunar Regolith Based On The Imprint From The Contact Sensor

The mechanical properties of lunar soil have important guiding significance to the sampling track and excavation depth during the sampling process.Indentation is the trace left on the moon soil by the lunar parts.In order to obtain the sampling area soil mechanics properties,this paper aimed at the nominal simulated lunar soil,CE-5 nominal simulated lunar soil,CE-5 challenges simulated lunar soil,CE-5 extreme simulation on soil and JLU-2 simulated lunar soil four month indentation test simulated lunar soil was the touch,one study found that the same kind of simulated lunar soil under the same condition,with the changes in the Angle of X,short length gradually become shorter,longer on long side length and width,depth and area increase gradually.However,with the change of Y Angle,the geometric parameters of indentation remain basically unchanged.In this paper,the indentation test of simulated lunar soil under different conditions is carried out,and the correlation between indentation characteristic parameters and simulated lunar soil state is established by means of support vector machine.The state estimation models of four kinds of simulated lunar soils,namely,CE-5 nominative simulated lunar soil,CE-5 challenge simulated lunar soil,CE-5 extreme simulated lunar soil and JLU-2 simulated lunar soil,were established,which were mainly used to estimate the state(soft,medium and dense)of simulated lunar soil.The corresponding classification accuracy was 93.75%,87.5%,91.67% and 77.08%,respectively.The expert decision system of surface depth retrieval and lunar surface mechanical property inversion for indentation is compiled.More software information can also be found in the online help file of this software.In this paper,the nonparametric and parametric inversion models of lunar soil mechanical parameters in the landing area are established,the inversion analysis algorithm(Matlab GUI program)is written,and the sampling depth suggestion expert system(VB)is written.