Abstract
Adopting an electronically control throttle valve (ECTV) has many possibility of improving the automobiles performance thanks to its freedom. One of them is an optionally tuning for the accelerator pedal sensitivity. It can be attained by using two feedback signals of wheel axle torque signal estimated by adaptive observer and speed signal. However control system designed by MRACS (model reference adavtive control system) can be easier, because tuning of accelerator pedal sensitivity is realized by bringing actual wheel speed to reference wheel speed. Therefor, both these method tried to be compared. As the result, torque demand method is suited to automobile power-train system, because the system includes nonlinear element.
