Dynamic Comfort Design Of The Seat

The dynamic comfort of the driving seat is mainly related to the vibration characteristics. The vibration that affects driving fatigue is mainly caused by random vibration of the vehicle and mechanical vibration of the vehicle itself due to uneven roads during driving. The driver is subjected to linear vibrations in the longitudinal, lateral and vertical directions, as well as angular vibrations in these three directions. The vertical vibration and the angular vibration around the longitudinal and abscissa axes have a great influence on the human body. Vibration is transmitted to the buttocks and back of the human body through the seat to cause systemic vibration. Therefore, when designing the car seat, try to isolate the sensitive vibration of the human body.

The following measures can be taken in the seat design

Reduce the seat resonance frequency, reduce the high-frequency area that is most influential to the human body; reduce the vibration transmission rate during resonance; reduce the vibration transmission rate around the occupant at 10 Hz to reduce the influence of resonance below the spring and reduce the impact from the seat back High-frequency vibration; consider the road surface—tire, suspension, seat—people as an overall large dynamic system, and seek the optimal structure that makes the occupants not easy to fatigue under the random input of various road surfaces. In addition, the dynamic characteristics of the seat are optimized according to the minimum energy input into the human body, the minimum dynamic response of the human body in the sensitive frequency region, and the minimum root mean square value of the acceleration transmitted to the human body, matching with other vibration damping systems of the automobile. To make the human body in a more suitable vibration environment.