Investigation of tractor driver seat comfort level using passive suspension system

ARTICLE INFO An agricultural tractor seat with passive suspension system gives a number of advantages when compared with currently available seat designs. Analysis on the vibration of tractor seat suspension system by using the different types of the suspension system is carried out for the different types of operation and analyze the suspension system separately to find out the reduction in the vibration level and Root mean Square acceleration (RMS) of the seat. These advantages are discussed within the context. It is known that a soft suspension system with low natural frequency gives more comfort than a stiffer one and also the operator requires more space. We knew that conventional dampers is a compromise between limiting seat motion around the natural frequency and have good attenuation of higher-frequency inputs. The experimental results show that the non-linear seat reduces the vibration transmitted to the tractor driver compared to a linear mechanical seat. The combination of non-linear seat suspension system and the linear seat suspension system showed a possible reduction in RMS acceleration compared to a linear seat system. The improved suspension system would improve mainly the shock control of the seated driver and in this way enhance his comfort as well as his health. At the same time, it would increase the durability of the seat suspension system. This design has another advantage that it has low cost and