Design and Simulation of Auto-Shifting System in Manual Transmission Gearbox for Electric Race Car with Fuzzy Logic Controller on Matlab-Simulink

In a race car that uses manual transmission, the driver has to be more focus in driving due to the shifting process. This research develops a system that is able to operate shifting process of manual transmission automatically, which later named as auto-shifting manual transmission. There are two important programs inside the system; auto-shifting program, which is used to control shifting process automatically, and auto-accelerator program, which is used to control acceleration value automatically in shifting process based on the driver's acceleration behavior. In the simulation results, it shows that the auto-shifting program works properly for 1^st gear ratio up to 4^th gear ratio, with RPM parameter of 500 RPM for Race Mode and 300 RPM for Efficient Mode. The auto-accelerator program has good result in decreasing the Output RPM Value with specific value in order to get RPM target to obtain a proper and smooth shifting process. Furthermore, the auto-accelerator program successfully reads and memorizes "the acceleration behavior" or the slope of Acceleration Input Value and uses it to make its own rising value without changing the Acceleration Input Value as the manual accelerator. Overall, both auto-shifting and auto-accelerator programs are shown to work successfully.