Digital photogrammetry measurement method for the rotary motion of Centrifugal Pendulum Vibration Absorber
Centrifugal Pendulum Vibration Absorber(CPVA)is widely used in transmission systems due to its ability to effectively absorb torsional vibration generated by the engine.To address the lack of methods measuring kinematic parameters in the study of CPVA dy-namic characteristics,a non-contact measurement method based on computer vision is pro-posed.Firstly,markers are arranged on the rotor and the pendulum,and a high-speed cam-era is used to capture the motion video of the CPVA.Then digital image processing tech-niques are used to recognize the positions of the markers.Finally,the kinematic parameters of the rotor and the pendulum are calculated according to the coordinates of the markers.The experimental results show that the proposed method can accurately measure the motion of CPVA in a gravity field.
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