CAJ | 학술논문

基于灰自助最大熵法,进行了机械制造工艺中输出的误差分布及机床加工误差调整研究。在分析误差分布时,首先运用自助法对当前少的信息量进行自助再抽样得到大量样本数据,然后利用灰色系统理论建立误差的灰自助动态预报模型 GBM(1,1),最后用最大熵法获得了输出误差的概率分布。根据输出误差的概率分布,对机床的加工误差进行调整,使加工的产品误差满足要求。计算机仿真和实际案例的研究表明,灰自助最大熵法能够对机床进行准确调整,且预报准确率高。
기우회자조최대적법,진행료궤계제조공예중수출적오차분포급궤상가공오차조정연구。재분석오차분포시,수선운용자조법대당전소적신식량진행자조재추양득도대량양본수거,연후이용회색계통이론건립오차적회자조동태예보모형 GBM(1,1),최후용최대적법획득료수출오차적개솔분포。근거수출오차적개솔분포,대궤상적가공오차진행조정,사가공적산품오차만족요구。계산궤방진화실제안례적연구표명,회자조최대적법능구대궤상진행준학조정,차예보준학솔고。
According to grey bootstrap maximum entropy method,the distribution of output er-rors and the adj ustment for the machining errors of machine tool was studied in mechanical manufac-turing process.This method included bootstrap methodology,the grey system theory,and the maxi-mum entropy theory.In order to analyze the error distribution,the bootstrap methodology was ap-plied to get a large number of sample data by bootstrap resampling from the current information vec-tor of small size,and then the grey system theory was used to establish a grey bootstrap model (GBM)of dynamic prediction.The probability distribution of output errors could be obtained by using the maximum entropy method.Based on the probability distribution of output errors,the ma-chining errors of machine tool was adj usted so that the machining errors of products could satisfy the requirements.Computer imitation and actual cases show that the machining errors of machine tool can be adj usted accurately by using grey bootstrap maximum entropy method,and the forecasting accura-cy is high.