Design and Simulation of a Suspension System for Agricultural Transporters
Date Issued
2015
Date
2015
Author(s)
LIN, CHIA-HAO
Abstract
Agricultural transporters are one type of agricultural machinery which are developed and made successfully by local companies. The major function of an agricultural transporter is to transport farm crops and products. Moreover, because of their great adaptability to landform, these machines are applied extensively to reduce human labor. In recent years, the agricultural environment has changed dramatically. Domestic manufacturers have a great deal of experience with fabricating technology, so they already have the ability to make a variety of agricultural transporters. If we can further introduce this technology to other vehicles, more progress can be made in the field of agricultural transporters. This research focuses on the suspension system in order to further improve the ride comfort of agricultural transporters. In this paper, a computer aided engineering software called ADAM/Car was used to build the suspension system and transporter model. Then a quarter car model and MATALB software were also used to design the controller. The result of this simulation shows that the vertical acceleration increases with speed. This controller can reduce vertical acceleration value from 20 to 40 km/h in the time domain. The Fast Fourier Transform was also used to transform the result to the frequency domain. When the transporter travels on an uneven road, the result shows that the gain in 1.1 Hz was apparently reduced in the frequency domain. Although the gain in 4 to 10 Hz only increased slightly, according to the ISO 2631-1 comfort index, the results still fall within an acceptable range for humans.
Subjects
Agricultural Transporter
Semi-active Suspension system
Ride Comfort
Robust Control
Type
thesis