文献类型：期刊文献

中文题名：树木微钻仪钻针阻力表达方法研究

英文题名：Drill Resistance Expression Method of Tree Micro Drill Instrument

作者：姚建峰[1] 赵燕东[2] 张会儒[3,4] 宋新宇[5] 雷相东[3,4] 唐守正[3,4]

第一作者：姚建峰

通信作者：Tang, Shouzheng

机构：[1]信阳师范学院计算机与信息技术学院,信阳464000;[2]北京林业大学工学院,北京100083;[3]中国林业科学研究院资源信息研究所,北京100091;[4]国家林业和草原局森林经营与生长模拟重点实验室,北京100091;[5]信阳师范学院数学与统计学院,信阳464000

年份：2021

卷号：52

期号：8

起止页码：271-277

中文期刊名：农业机械学报

外文期刊名：Transactions of the Chinese Society for Agricultural Machinery

收录：CSTPCD;;EI(收录号：20213410814954);Scopus;北大核心:【北大核心2020】；CSCD:【CSCD2021_2022】；

基金：河南省科技发展计划项目(212102110209);中央级公益性科研院所基本科研业务费专项资金重点项目(CAFYBB2018SZ007)。

语种：中文

中文关键词：树木微钻仪;微损测量;钻针阻力;线性模型

外文关键词：tree micro drill instrument;micro destructive measurement;drill resistance;linear model

分类号：S758.7

摘要：树木微钻仪钻针阻力不能直接测量,但能通过直流电机的电流、电压、功率、转速等参数间接表达。为了提高钻针阻力测量精度,进一步研究了钻针阻力表达方法。阐述了树木微钻仪的工作原理,分析了钻针阻力与直流电机电流、电压、功率、转速之间的关系,提出了6种钻针阻力表达方法。使用自主研制的树木微钻仪和德国Resistograph 650-S型微钻仪对4个树种的木材密度进行测试,分别建立自主研制微钻仪每种钻针阻力表达方法各自的平均值、Resistograph 650-S型钻针阻力平均值与木材绝干密度之间的线性模型。测试结果表明:自主研制的树木微钻仪直流电机电流、电压和功率与木材绝干密度之间的线性相关系数均大于0.9,因此可使用直流电机的电流、电压或者功率来间接表达钻针阻力;转速修正后的直流电机电压与木材绝干密度的相关性最高,因此使用转速修正后的直流电机电压表达钻针阻力更为适宜;自制微钻仪转速修正后的直流电机电压与木材绝干密度之间的线性相关系数比德国Resistograph 650-S型微钻仪高0.0053,说明自制树木微钻仪的设计方案和钻针阻力表达方法合理。
The drill resistance of tree micro drill instrument can not be measured directly,but can be expressed indirectly by the current,voltage,power,speed and other parameters of DC motor.In order to improve the measurement accuracy of drill resistance,the expression method of the drill resistance was further studied.The principle of the micro drill instrument was described,and the relationship between the drill resistance and the current,voltage,power and speed of the DC motor controlling the drill rotation speed was analyzed,and six drill resistance expression methods were putted forward.The test wood samples included hardwood,softwood and conifer.The absolute dry wood density of each sample was measured.The drill resistance data was tested by self-developed micro drill instrument and Resistograph 650-S produced by German Rinntech Company.Average resistance value expressed by each resistance expression method of self-developed micro drill instrument and average resistance value measured by Resistograph 650-S were calculated to each test sample.The linear models between each average resistance value and the absolute dry wood density were established.The results showed that the linear correlation coefficient between DC motor current,voltage,power and absolute dry wood density were higher than 0.9,and the current,voltage and power of DC motor can be used to express the relative magnitude of drill resistance;the linear correlation coefficient between DC motor voltage adjusted by rotation speed of DC motor and absolute dry wood density was the highest,so when measuring absolute dry wood density,the drill resistance expressed by DC motor voltage adjusted by rotation speed of DC motor was more appropriate in the six drill resistance expression methods.The linear correlation coefficient of self-developed micro drill instrument between DC motor voltage adjusted by rotation speed of DC motor and absolute dry wood density was 0.0053 higher than that of the German Resistograph 650-S,which indicated that the design scheme and the drill resistance expression method were reasonable.The design scheme and the drill resistance expression method proposed had great reference value for the independent production of micro drill instrument in China.