下面分析一下在試驗結(jié)果中的誤差表現(xiàn)以及原因,共三點。
The analysis ofthetest resultsoferror performanceas well as the reason,a total of threepoints.
一、隨機誤差:即在相同的條件下,對同一參數(shù)反復停止屢次丈量,所得到的測定值也不可能完整相同。原因可能:在實驗過程中,試驗機內(nèi)摩擦力的變化;環(huán)境濕度等的變化。
A:namely,the random errorin the same conditions,the sameparameters repeatedlyrepeatedlymeasured,themeasured valuescannot be completelythe same.Reason:in the course of the experiment,the changeof internal frictiontestmachine;change ofenvironment humidityetc..
二、液壓系統(tǒng)誤差:堅持一定數(shù)值或者一定規(guī)律變化的誤差。系統(tǒng)誤差是有規(guī)律的,這種規(guī)律表現(xiàn)在每一次詳細的實驗中,找到這種規(guī)律,就能夠加以修正。
Two,the hydraulic systemerror:errortochangecertainnumericalorcertain laws.System erroris the law,thelawin everydetailin the experiment,foundthe law,canbemodified.
原因:萬能試驗機示值不準,所測得的力值總是偏大或偏小。電阻應變儀丈量應變時,儀器面板上的系數(shù)的誤差。
Reason: thevaluenotshownuniversal testing machine,the measuredforce valueistoo large or too small.Resistance strain gaugemeasuringstrain,error coefficienton the instrument panel.
三、差錯誤差:由于實驗工作中的錯誤,忽略大意等緣由惹起的誤差。這種誤差是沒有規(guī)律的,需求重復核對方可防止。
Three,the errorerror:due to experimentalerrors in the work,ignore theerroreffectetc. the cause.Thiserrorisnotregular,repeatingeach othercan preventnucleardemand.
原因:萬能試驗機操作錯誤,實驗人員看錯了數(shù)字,記載時寫錯了小數(shù)點位置等。
Reason: theuniversal testing machineoperation error,thewrongnumber,recordsthe wrongdecimalpoint.
萬能拉力機:http://www.ksshiyanji.com/