A Development of Spindle drive power trunk lid system with Optimizing Actuating noise
2022-01-0916
03/29/2022
- Event
- Content
- The power trunk lid system is a device that automatically opens and closes the trunk lid using a motor, for the purpose to improve user’s convenience. The technology was applied only to high-priced large cars such as Equus and Genesis, but in line with increasing preference for high convenience features, the scope of application is gradually expanding to semi-large and mid-size vehicles. Accordingly, the need to secure profitability through cost reduction emerged, and we developed a power trunk lid system using a spindle drive. Spindle drives can reduce costs by optimizing the required motor specifications compared to conventional swing arm drives, and are lightweight and easy to assemble. However, since a planetary gear with a high gear ratio is used and the rotational speed of the motor is generally high, it has a relatively low characteristic in terms of actuating noise. When we first applied the spindle drive type power trunk lid system to GL3 model (the successor of YG), to reduce the actuating noise of the system, we verified that the noise is structure born noise, identified which path the vibration spreads, and measured the frequency response function of correlated structure through impact hammer test. We then compared the function with the excitation frequency of the drive unit to optimize the rotational speed of the motor. In this paper, we would like to introduce the experience of performing the above process and the overall considerations of developing the spindle drive type power trunk lid system.
- Citation
- lim, K., "A Development of Spindle drive power trunk lid system with Optimizing Actuating noise," SAE Technical Paper 2022-01-0916, 2022, .