Typical gearbox vibration contains several tonal signals mixed with a broadband response. Based on gear active structure attached piezoelectric actuator on the shaft, an online secondary path identification feedback filtered-x LMS (FxLMS) algorithm is proposed to suppress gear meshes vibration due to the transmission error disturbances. Firstly, a C-MEX S function is used to build a Filtered-x LMS algorithm block in Simulink, and then an online secondary path modeling method is added to estimate the secondary path using an adaptive LMS filter. Simulation example verifies the correctness of custom modules and validity of the proposed algorithm. A gearbox test-bed is also developed with a piezoelectric actuator inside for applying control forces to the shaft. Lastly, the custom FxLMS block and the online identification part were downloaded to DSpace as controller. Experiment results showed that the online secondary path modeling FxLMS controller performs an effective performance. Up to 7 dB of gearbox vibration was attenuated at some fundamental gear mesh frequency.
Li Yinong Zhang Feng Ding Qingzhong Wang Lei.
Active Vibration Control of Gear Meshing Based on Online Secondary Path Identification Algorithm[J]. Journal of Vibration and Shock, 2013, 32(16): 7-12
PDF(2563 KB)
