自走式青饲料收获机制动减速度测定的不确定度评定

The Evaluation of Uncertainty in Measurement of Braking Deceleration in Self-propelled Forage Harvester

自走式青饲料收获机在奶牛饲养业中广泛应用,其制动性能直接影响青饲料收获机的行驶安全。本文依据GB/T 14248-2008《收获机械制动性能测定方法》对自走式青饲料收获机进行行车制动试验,测定制动减速度,并从测量重复性、制动初速度、制动距离三个方面进行测量不确定的分析评定,确定影响自走式青饲料收获机制动减速度测量不确定度的主要来源。

The self-propelled forage harvester is widely used in dairy cattle breeding industry, and its braking performance directly affects the running safety of the forage harvester. In this paper, based on the GB/T 14248-2008“Determination of braking performance for harvesting machinery”to carry on the driving braking test, measured the braking deceleration, analysis and evaluation the uncertainty of the measurement repeatability, initial speed and braking distance, determine the impact of the main source of the uncertainty of the measurement of the self-propelled forage harvester braking deceleration.