Current design method for circular sliding slopes is not so reasonable that it often results in slope (sliding.) As a result, artificial neural network (ANN) is used to establish an artificial neural network based inv...Current design method for circular sliding slopes is not so reasonable that it often results in slope (sliding.) As a result, artificial neural network (ANN) is used to establish an artificial neural network based inverse design method for circular sliding slopes. A sample set containing 21 successful circular sliding slopes excavated in the past is used to train the network. A test sample of 3 successful circular sliding slopes excavated in the past is used to test the trained network. The test results show that the ANN based inverse design method is valid and can be applied to the design of circular sliding slopes.展开更多
针对直流触电电流响应特性尚不明晰的问题,剖析了多因素下动物体直流触电电流的幅值、峰值上升时间、滑动斜率的时域响应特性,同时提出了一种变分模态与奇异值分解(variational mode decomposition and singular value decomposition,VM...针对直流触电电流响应特性尚不明晰的问题,剖析了多因素下动物体直流触电电流的幅值、峰值上升时间、滑动斜率的时域响应特性,同时提出了一种变分模态与奇异值分解(variational mode decomposition and singular value decomposition,VMD-SVD)的直流触电电流时频响应特性分析方法。首先通过对不同触电方式、触电电压、皮肤表面干湿度、触电路径和动物体质量工况下的活体猪直流触电电流幅值、滑动斜率、峰值上升时间时频响应特性进行分析,揭示了触电电流响应特征与多因素之间的变化规律。同时定量地分析了各因素对活体猪直流触电电流特性的影响,揭示了动物体质量和直流触电电压与电流幅值间的定量关系。最后采用VMD-SVD分析了多因素下触电前/后的活体猪直流触电电流时频响应特性,揭示了触电前/后最大奇异值和奇异熵特征量存在明显差异,且多因素影响下最大奇异值和奇异熵特征量差异<10%。展开更多
文摘Current design method for circular sliding slopes is not so reasonable that it often results in slope (sliding.) As a result, artificial neural network (ANN) is used to establish an artificial neural network based inverse design method for circular sliding slopes. A sample set containing 21 successful circular sliding slopes excavated in the past is used to train the network. A test sample of 3 successful circular sliding slopes excavated in the past is used to test the trained network. The test results show that the ANN based inverse design method is valid and can be applied to the design of circular sliding slopes.
文摘针对直流触电电流响应特性尚不明晰的问题,剖析了多因素下动物体直流触电电流的幅值、峰值上升时间、滑动斜率的时域响应特性,同时提出了一种变分模态与奇异值分解(variational mode decomposition and singular value decomposition,VMD-SVD)的直流触电电流时频响应特性分析方法。首先通过对不同触电方式、触电电压、皮肤表面干湿度、触电路径和动物体质量工况下的活体猪直流触电电流幅值、滑动斜率、峰值上升时间时频响应特性进行分析,揭示了触电电流响应特征与多因素之间的变化规律。同时定量地分析了各因素对活体猪直流触电电流特性的影响,揭示了动物体质量和直流触电电压与电流幅值间的定量关系。最后采用VMD-SVD分析了多因素下触电前/后的活体猪直流触电电流时频响应特性,揭示了触电前/后最大奇异值和奇异熵特征量存在明显差异,且多因素影响下最大奇异值和奇异熵特征量差异<10%。
