| 摘要 |
A method and system for controlling the speed of a vehicle senses a position of an accelerator pedal. In a first embodiment, the accelerator pedal has a mechanical predetermined natural position, wherein when the position of the accelerator pedal is held constant at the predetermined natural position the control logic interprets the position of the pedal as a request for constant vehicle speed. However, at low vehicle speeds, the control logic interprets the position of the pedal as a request for constant vehicle speed when the position of the pedal is held constant at a position below the predetermined natural position and controls the speed of the vehicle according to a predetermined zero acceleration curve. In a second embodiment, constant speed control is assumed when the position of the pedal has not changed for a predetermined amount of time, regardless of the relative position of the pedal. Any torque offsets encountered during the constant speed mode is reduced and eventually eliminated when the constant speed mode is exited and the pedal position increases/decreases.
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