Showing papers on "Drive by wire published in 1992"

Drive-by-wire type vehicle having accelerating pedal operating means linkage mode switching control part

Abstract: PURPOSE:To improve operability and running ability by calculating a required output ability of an engine while using an operation condition of an accelerating pedal operating means, switching set modes according to the requirement, and setting a target throttle opening from the switched mode. CONSTITUTION:In a drive-by-wire type vehicle enabling control of an engine output independently on an accelerating pedal operation of an operator, a motor 7 is connected to a throttle valve 6, which motor 7 is controlled by a vehicle running condition linkage mode switching control part 157. The control part 157 which inputs an output of an accelerating pedal position sensor 15A is provided with a mode switching means 157B, an engine ability requirement detecting means 157A, and a throttle valve control means 157C. The mode switching means 157B has a normal mode and an economy mode, and calculates throttle openings corresponding to the respective modes. The engine ability requirement detecting means 157A outputs a mode switching signal based on a detected ability of an engine required by a driver.

機関, cvt統合制御における制御方法の比較, 検討

Abstract: In the consolidated control, so-called "drive by wire", for an automobile engine power train system, there are two manipulated variables: throttle valve angle (θ) and CVT gear speed ratio (Rm). These two manipulated variables both affect the automobile speed (nv). Therefore, in order to keep the desired engine operating condition under the nv commanded by the driver, the control theory such as the decoupling control on multi variable input-output control is necessary. On the other hand, there are two pairs of reference and controlled variables because of the existence of these two manipulated variables. This means that there are two subsystems inside the power train system. One of the pair must be nv itself. As the other pair, Rm or engine speed (ne) is most considerable. Reported here is the comparison of the consolidate control performances of 3 combinations of the adopted control theory and another pair of variables. Results showed that decoupling control with ne was excellent.