一种基于倒位编辑的齿轮箱复合故障诊断方法

• Format: Patent
• Language: Chinese
• Published: 16.04.2021
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; MEASURING; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

本发明公开了一种基于倒位编辑的齿轮箱复合故障诊断方法，该方法首先依据齿轮故障信号、轴承故障信号与噪声在能量上的差异性和傅里叶变换的共轭对称性，对原始振动信号进行初始相位辨识、编辑、倒位和矢量叠加，实现了信号的有效降噪和对信号中能量不同成分的划分。其次，应用基于最大类间方差的幅值等级分解方法自动地对信号中能量差异特征进行分解，实现了复合故障的有效分离；再次对已分离的故障信号做希尔伯特包络解调分析，可最终实现故障特征的提取与诊断。通过对复合故障信号的仿真分析，验证了所提方法的有效性。实验数据分析结果也表明该方法可以有效的对齿轮箱中的轴承与齿轮复合故障进行分离与诊断。 The invention discloses a gear box composite fault diagnosis method based on reverse editing. The method comprises the steps of: performing initial phase identification, editing, inversion and vectorsuperposition on an original vibration signal according to energy differences of a gear fault signal, a bearing fault signal and noise and conjugate symmetry of Fourier transform, so that effective noise reduction of the signal and division of different energy components in the signal are achieved; applying an amplitude level decomposition method based on the maximum between-cluster variance to automatically decompose energy difference features in the signal to achieve effective separation of composite faults; and performing Hilbert e