Design And Research Of Grabbing Particle Sampler For Deep Space Exploration

Deep space exploration is a key project of various space agencies in the world.Obtaining the celestial soil has become a hot spot in the field of deep space exploration.At present,many kinds of samplers have been proposed by universities and scientific research institutions at home and abroad,but these sampling methods have different disadvantages.In this paper,according to the environmental characteristics of deep space exploration and the "Tough and Go" flight mode of the satellite carried by the sampler,a grabbing particle sampler is developed,and its related functions are verified by simulation analysis and related experiments.Firstly,in this paper,the development status of samplers is analyzed in deep space detection at home and abroad.Based on the flight mode of detector TAG,according to the performance index,a new grab sampling method is used to design the particle sampler.And the workflow of the sampler has been worked out.Grabbing particle sampler consists of four parts: sampling head,turntable assembly mechanism,cavity assembly mechanism and turntable assembly mechanism.It has the characteristics of multi-point sampling,integration of mining and storage.Secondly,this paper used ADAMS and ABAQUS software to complete the simulation analysis.The dynamic simulation of the sampling head is carried out by ADAMS software to explore the closing time of the cavity door under different driving springs.Using ABAQUS software to simulate and analyze the trigger conditions of the sampling head,and to explore whether the lunar soil and Mars soil can trigger the closure function of the sampling head by using the parameters simulation of lunar soil and fire soil.At the same time,the modal analysis of the sampling head is carried out to avoid the resonance of the sampling head system.Finally,sample grabbing test was carried out.Aiming at the problem that the door of the sampler can not be completely closed,the structure of the sampling chamber door is improved.The experimental results showed that the improved sampler has more stable grabbing performance and larger sampling quantity,which can meet the performance requirements.