为了提高无人机俯仰角故障数据处理和预测的精确性和可靠性,避免增加无人机试飞成本,利用长短期记忆网络(long short term memory,LSTM)、注意力机制+LSTM模型和差分自回归移动平均模型(autoregressive integrated moving average model...为了提高无人机俯仰角故障数据处理和预测的精确性和可靠性,避免增加无人机试飞成本,利用长短期记忆网络(long short term memory,LSTM)、注意力机制+LSTM模型和差分自回归移动平均模型(autoregressive integrated moving average model,ARIMA)模型预测无人机试飞俯仰角故障数据。结果表明,ARIMA预测结果:平均绝对误差(mean absolute error,MAE)为0.35,均方根误差(root mean square error,RMSE)为0.73,平均绝对百分比误差(mean absolute percentage error,MAPE)为23.80%;LSTM模型预测结果:MAE=0.49,RMSE=0.74,MAPE=45.20%;注意力机制+LSTM模型预测结果:MAE=0.17,RMSE=0.53,MAPE=18.93%。可见注意力机制+LSTM模型比其余两种模型更适合于试飞俯仰角的数据预测,以上3种方法对无人机故障数据预测都具有实际意义,有效的预测可以推进自动飞行器和移动机器人的异常检测或外国直接投资研究的最新进展,以进一步提高自动和远程飞行操作的安全性。展开更多
This article presents a pragmatic quadcopter development template for parcel delivery in Nigeria. The quadcopter is equipped with a camera, parcel pouch and wireless telecommunication to capture live events and send t...This article presents a pragmatic quadcopter development template for parcel delivery in Nigeria. The quadcopter is equipped with a camera, parcel pouch and wireless telecommunication to capture live events and send them back to the control station for real-time delivery feedback. The study also discusses the design methodology adopted as a conceptual design approach vital to product development, it encompasses information gathering and identifying the problem, creating the solutions systematically and eventually evaluating and developing a concept for the drone and its attributes and presenting clear results for design calculations.展开更多
文摘为了提高无人机俯仰角故障数据处理和预测的精确性和可靠性,避免增加无人机试飞成本,利用长短期记忆网络(long short term memory,LSTM)、注意力机制+LSTM模型和差分自回归移动平均模型(autoregressive integrated moving average model,ARIMA)模型预测无人机试飞俯仰角故障数据。结果表明,ARIMA预测结果:平均绝对误差(mean absolute error,MAE)为0.35,均方根误差(root mean square error,RMSE)为0.73,平均绝对百分比误差(mean absolute percentage error,MAPE)为23.80%;LSTM模型预测结果:MAE=0.49,RMSE=0.74,MAPE=45.20%;注意力机制+LSTM模型预测结果:MAE=0.17,RMSE=0.53,MAPE=18.93%。可见注意力机制+LSTM模型比其余两种模型更适合于试飞俯仰角的数据预测,以上3种方法对无人机故障数据预测都具有实际意义,有效的预测可以推进自动飞行器和移动机器人的异常检测或外国直接投资研究的最新进展,以进一步提高自动和远程飞行操作的安全性。
文摘This article presents a pragmatic quadcopter development template for parcel delivery in Nigeria. The quadcopter is equipped with a camera, parcel pouch and wireless telecommunication to capture live events and send them back to the control station for real-time delivery feedback. The study also discusses the design methodology adopted as a conceptual design approach vital to product development, it encompasses information gathering and identifying the problem, creating the solutions systematically and eventually evaluating and developing a concept for the drone and its attributes and presenting clear results for design calculations.
