摘要
为了进一步提高水尺计重精度,减少由于流速导致船体下沉而引起水尺计重的系统误差,并寻找合适的修正方法,运用逻辑树法分析水尺计重的误差来源,在众多的船体下沉量算法中遴选出5种适合低速船舶下沉量预报的计算公式,与实船下沉量测量数据比对发现Barrass公式是最接近实测值的计算公式,可直接用于此项误差的修正计算。提出修正平均吃水来抵消水尺计重过程中因船体下沉导致计量误差的修正方法,以实例证明水尺计重过程中船体下沉误差修正的必要性与可行性。
In order to further improve the draft survey precision,reduce the systematic error of draft survey caused by the squat due to the flow,and find the proper correction method,the method of logical tree is applied to analyze the error sources of draft survey.Five available squat algorithms are selected from lots of squat formulas.Comparing the results with the test data of real ships,it is found that the result of Barrass formula is closest to the measured one,and it can be used for this error＇s correction calculation.The modified method is put forward by adjusting the mean draft to offset the systematic error which causing by the squat during the process of draft survey.The necessity and feasibility of error correction are proved with practical example.
出处
《船海工程》
北大核心
2015年第1期126-130,共5页
Ship & Ocean Engineering
基金
辽宁省自然科学基金项目(2014025008)
