本研究為求方便設計控制器，利用電腦軟體MATLAB/Simulink建構出機車的動態模型，使用暨有的引擎扭力與油耗數據搭配ECVT與傳動系統的動態數學模式，以縮短開發時程與成本。 The advantages of smoother speed ratio change, simple operating and easy to repair, etc., are the main reasons for the rubber V-belt Continuously Variable Transmission (CVT) being popular used in scooters. The weaknesses of the traditional CVT system are the low transmission efficiency at the lower speed or lower torque, the centrifugal rollers and movable flange have the worn-out problems which may reduce the materials life-cycle. In order to solve these problems, the aim of this study is to design a brand new Electronically-controlled Continuously Variable Transmission (ECVT) system, which integrated the engine’s rotating speed, the vehicle speed and the Throttle Position Sensor (TPS). By applying the motorcycle engine performance charts, the optimum speed ratio can be calculated and used for different types of engines as well as different driving conditions; therefore, a better performance and lower fuel consumption can be expected. The newly designed ECVT use an electronic control equipment to change the speed ratio which can overcomes the limitation of the traditional CVT mechanism, and automatically compensate the worn-out effects of the centrifugal rollers and movable flange. Also, the ECVT may provide higher efficiency, durability, reliability, and accurate movement for the transmission system.
A set of motorcycle dynamic models was built first in this research for simulation and controller design, use and there has been of engine torque data match the ECVT transmission systems dynamic mathematical model, shorten to develop the timing and costs.