基于改進(jìn)GA-BP網(wǎng)絡(luò)的系泊纜力預(yù)測(cè)建模與仿真
發(fā)布時(shí)間:2018-11-16 21:11
【摘要】:針對(duì)大型開敞式碼頭系靠泊安全保障和預(yù)警控制需求,研究了一類基于遺傳算法和BP網(wǎng)絡(luò)的系泊船舶纜力預(yù)測(cè)模型?紤]影響系泊纜力的環(huán)境動(dòng)力因素,使用權(quán)值統(tǒng)計(jì)法確定了預(yù)測(cè)模型的結(jié)構(gòu);利用個(gè)體父代信息和當(dāng)代個(gè)體的局部梯度信息對(duì)預(yù)測(cè)模型的學(xué)習(xí)方法進(jìn)行了改進(jìn);基于改進(jìn)的預(yù)測(cè)模型,提出了大型開敞式碼頭系泊船舶纜力預(yù)測(cè)方法。仿真結(jié)果表明:改進(jìn)后的系泊船舶纜力預(yù)測(cè)模型在進(jìn)化代數(shù)、最大適應(yīng)度和預(yù)測(cè)精度等方面的性能均有所提高,且預(yù)測(cè)誤差均值低于10%,滿足實(shí)際需求。
[Abstract]:In order to meet the demand of berthing safety and early warning control of large open wharf, a kind of forecasting model of mooring ship cable force based on genetic algorithm and BP network is studied. Considering the environmental dynamic factors which affect the mooring force, the structure of the prediction model is determined by the statistical method of the right of use, and the learning method of the prediction model is improved by using the individual parent information and the local gradient information of the contemporary individual. Based on the improved prediction model, a prediction method for mooring ship cable force of large open wharf is proposed. The simulation results show that the performance of the improved mooring ship cable force prediction model has been improved in evolutionary algebra, maximum fitness and prediction accuracy, and the mean value of prediction error is less than 10, which meets the actual demand.
【作者單位】: 大連交通大學(xué)機(jī)械工程學(xué)院;大連交通大學(xué)軟件學(xué)院;
【基金】:國(guó)家自然科學(xué)基金(61074029) 大連市計(jì)劃(2014A11GX006)
【分類號(hào)】:TP18;U653.2;U675.92
本文編號(hào):2336649
[Abstract]:In order to meet the demand of berthing safety and early warning control of large open wharf, a kind of forecasting model of mooring ship cable force based on genetic algorithm and BP network is studied. Considering the environmental dynamic factors which affect the mooring force, the structure of the prediction model is determined by the statistical method of the right of use, and the learning method of the prediction model is improved by using the individual parent information and the local gradient information of the contemporary individual. Based on the improved prediction model, a prediction method for mooring ship cable force of large open wharf is proposed. The simulation results show that the performance of the improved mooring ship cable force prediction model has been improved in evolutionary algebra, maximum fitness and prediction accuracy, and the mean value of prediction error is less than 10, which meets the actual demand.
【作者單位】: 大連交通大學(xué)機(jī)械工程學(xué)院;大連交通大學(xué)軟件學(xué)院;
【基金】:國(guó)家自然科學(xué)基金(61074029) 大連市計(jì)劃(2014A11GX006)
【分類號(hào)】:TP18;U653.2;U675.92
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