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In this paper, a novel finite-time second-order sliding mode control (FTSOSMC) for trajectory tracking of underwater vehicles subject to system uncertainties and unknown disturbances, is proposed. In this control design, an second order sliding mode control framework is designed with a complete compensation of disturbance to obtain high tracking accuracy and relax the necessity of the disturbance...
Effective mechanical state prediction systems are critical to modern manufacturing systems and industries. As a method of deep learning algorithm, Recurrent neural network, (RNN) has been playing an increasingly important role in the field of time series prediction. In order to solve the problem of hard training and gradient extinction of RNN model, a long short-term memory network (LSTM) algorithm...
The fundamental frequency of the cables in a cable-stayed bridge is an important parameter for the cable tension. This paper analyzes the mechanical model of cable tension measurement and the FFT spectral decomposition of acceleration signals. By comparing amplitudes in the vicinity of the fundamental frequency, an advanced approach of power spectrum measurement for ultra-low fundamental frequencies...
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