Abstract
Steering wheel vibration control is of great significance to improve the ride comfort of vehicles. However, the coupling effect of the multi-source vibration transfer path makes it difficult to screen out the abnormal vibration transfer intervals. Therefore, a multi-point iterative analysis method (MIAM) is presented in this paper. In addition, this paper researches the characteristics of the main vibration transmission path of a truck and proposes a new vibration isolation structure. Considering the structural characteristics of the modal deformation of the car body, the installation orientation of the measuring point is further adjusted according to the area formed by modal deformation nodes, and a simplified vibration transfer path is presented. After weighing the vibration data of the sensor and considering the vibration transfer rate as the analysis index, the abnormal interval of vibration transmission on the main path was detected. The effectiveness of the improved structure is verified with the modal verification analysis of an extracted steering system model. In addition, the experimental results show that the improved measures reduce the total vibration of the steering wheel by 34% and offsets the peak corresponding frequency by 4.8%, showing the effectiveness of the proposed method and proving its advantages for other vibration control problems.
Highlights
With the development of the logistics and transportation industry, commercial models have gradually become popular for market transportation
The vibration of the steering wheel is driven by multiple sources of vibration at idle speed, such as ignition excitation of the engine and unbalanced torque of the gearbox, and these sources can be generally summarized as the vibration source, the vibration target, and the vibration transfer path [16]
Based on the established model of simplified vibration transfer path, the abnormal area of vibration transfer is found based on the analysis of the proposed allocated algorithm and a new structure proves its effectiveness by improving the ability of vibration isolation of steering wheel
Summary
With the development of the logistics and transportation industry, commercial models have gradually become popular for market transportation. More effectively controlling the jitter of an idle steering wheel is of great significance to improve the ride comfort of commercial vehicles. Many vibration control methods have been developed and analyzed based on the vibration transfer path, for example, by focusing on the excitation source in the link of vibration transmission, Zheng et al [9] adopted the genetic algorithm method for the powertrain mounting system optimization. After improving the structure of the final extracted vibration region, the experimental results show that the vibration level of the steering wheel as a whole is greatly reduced and the effectiveness of the method is verified. A structural optimization scheme is proposed, and with the verification of the real vehicle test, the results show the effectiveness of the implementation method and improvement measures.
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