Development of a Toroidal CVT Controller for Agricultural Tractor(Ⅱ) -PID controller -
Kim, H.J.(LG Cable Ltd., Gunpo, Republic of Korea)E-mail:[email protected] | Ryu, K.H.(Seoul National University, Seoul, Republic of Korea)
There are several different types of continuously variable transmission(CVT) such as toroidal drive, belt drive, hydrostatic drive, hydro-mechanical drive. The toroidal CVT is an alternative to the manual transmission, HST, power-shift gear transmissions or other CVTs. The driver of the CVT tractor doesn't have to operate a shift lever since the CVT controller automatically controls the speed of tractor. Thus, it is much easier to operate the CVT tractor. The fuel efficiency of CVT tractor can be increased since the controller responds quickly to the change in external load on the wheel during field operation.
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