Based on wavelet packet decomposition (WPD) algorithm and Teager energy operator (TEO), a novel gearbox fault detection ......

复调制带通滤波器具有负频率为零、冲击响应函数实部和虚部有９０°相移的特点，能将带通滤波和希尔伯物变换合为一体，只要选择合适的......