基于支持向量机的模拟月壤临界尺度颗粒切削负载识别  

Identification of critical fragments cutting load of simulated lunar soil based on support vector machine

作　　者：田野[1] 李楠楠 刘君巍 姜生元[2] 王储 张伟伟[2] TIAN Ye;LI Nan-nan;LIU Jun-wei;JIANG Sheng-yuan;WANG Chu;ZHANG Wei-wei(College of Light Industry,Harbin University of Commerce,Harbin 150028,China;Aerospace Mechanism andControl Research Center,Harbin Institute of Technology,Harbin 150001,China;Beijing Aerospace Vehicle Overall Design Department,China Academy of Space Technology,Beijing 100094,China)

机构地区：[1]哈尔滨商业大学轻工学院,哈尔滨150028 [2]哈尔滨工业大学宇航空间机构及控制研究中心,哈尔滨150001 [3]北京空间飞行器总体设计部中国空间技术研究院,北京100094

出　　处：《吉林大学学报（工学版）》2023年第7期2143-2151,共9页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(41772387);黑龙江省自然科学基金项目(LH2020E027);哈尔滨商业大学青年创新人才项目(2019CX04).

摘　　要：针对平均直径略大于或者等于钻头取芯孔直径的临界尺度颗粒,在取芯钻进过程中会产生孔底置出及孔壁置入两种运移方式而导致钻进负载发生变化的问题。通过建立切削模型,得到在低速切削时,切削速度对切削力影响较小可以忽略,并进行了试验验证;对含有不同粒径的临界尺度颗粒进行切削试验,得到切削负载随时间变化曲线,利用支持向量机(SVM)方法对切削负载进行识别,结果显示对均质模拟月壤切削负载的识别率为100%,对含有临界尺度颗粒的模拟月壤切削负载识别率均在95.5%以上。研究结果可为月面无人钻取采样在线识别技术提供参考。The critical fragments whose average diameter is slightly larger than or equal to the diameter of the bit coring hole will produce two migration modes:hole bottom output and hole wall input in the process of coring drilling,which will lead to the change of drilling load.By establishing the cutting model,it is obtained that the influence of cutting speed on cutting force is small and can be ignored in low-speed cutting.The cutting test is carried out on the critical scale particles with different particle sizes,and the variation curve of cutting load with time is obtained.The cutting load is identified by support vector machine(SVM).The results show that the recognition rate of homogeneous simulated lunar soil cutting load is 100%,and the recognition rate of simulated lunar soil cutting load with critical scale particles is more than 95.5%.The research results can provide a reference for the on-line identification technology of lunar unmanned drilling sampling.

关 键 词：地面力学 模拟月壤 支持向量机 切削速度 切削力 

分 类 号：TU41[建筑科学—岩土工程] P634[建筑科学—土工工程]