Desain Dan Analisa Performa Suspensi Hydraulicpneumatic Suspension System Kendaraan Pertanian Berbasis Mattrack

Abstract

Indonesia is agrarian country whose people make their living as farmers, but until now still has hard to handle problem using agricultural’s technology, because the development of agricultural’s technology in Indonesia  still inadequate, such as crop distribution, because some regions have texture of the ground surface is uneven, with use hydraulicpneumatic suspension and mattrack designed using SOLIDWORK is expected to be able to overcome the distribution of crop yields by adjusting Daihatsu Grandmax PU 1.3 STD. The main of this research is to see response of harmonic oscillatory sinusoidal with amplitude 0.02 m and frequency of 0.5 Hz, response of the damping force and spring force of a hydraulicpneumatic suspension using ideal PID controller. Simulation using MATLAB and Simulink to see continuous results with a time of 20 seconds. The test was carried out on the rear wheels with  quarter vehicle systeml, by replacing the conventional suspension with a hydraulicpneumatic which has an orifice diameter of 2 mm and a piston of 78 mm using ASTM D 1298 oil of , for the gas accumulator it has the initial pressure and volume in both cylinders  is ,  of  with a floating piston diameter of 78 mm, produces harmonic oscillation movements of the vehicle that are smaller than the road profile conditions, and experience a stable condition at 6.2 seconds. And the maximum oscillating force produced by the mattrack is almost the same as the road profile conditions which produce good road holding.