| Abstrakt: |
In recent years, the search for new technology to increase comfort and stability in the vehicle with the latest technology is increasing. Therefore, various studies have been done. This research describes the development of a twin tube magnetorheological (MR) suspension system of a car model, Proton Preve. The development process includes designing a multiple degree-of-freedom mass-spring damper, the mathematical model involved, and the controller using Matlab/Simulink. The parameters involved, such as mass and damper spring resistance, were determined. Based on the mathematical model obtained, the system was designed in Simulink using the force disturbance input obtained from the data sheet. After successfully simulating the system, the PID controller was designed using Simulink and tested. The obtained results were compared to determine which parameters that best reduced vehicle vibrations. A prototype of the MR damper was built in Simulink, which was a major contribution of this research. The MR Proton Preve damper was designed according to the C-class specification. A quarter car system was designed following the equations of a two degrees-of-system. A PID controller simulation was performed and compared with the OEM C-class damper. In the next phase, a simulation was also conducted to aid in the design of the MR C-class damper. The MR damper was a twin tube design, where the coil was integrated with the piston of the damper. In response to forces applied, the twin tube design allowed the piston to travel only within a fixed distance in the cylindrical reservoir. The twin tube design kept the MR fluid within the reservoir. The simulation showed that the new MR suspension system with an Arduino PID microcontroller was effective for use in the Cclass vehicle. At this condition, the displacement amplitude of the sprung mass was less than 10 mm, which satisfies the comfort category in the ISO8608 standard. [ABSTRACT FROM AUTHOR] |
