Online calibration method and calibration device for potentiometer type accelerator

The embodiment of the invention discloses an online calibration method and device for a potentiometer type accelerator. The on-line calibration method of the potentiometer type accelerator comprises the following steps: acquiring a first accelerator voltage in a zero accelerator opening state; second accelerator voltage in the maximum accelerator opening degree state is obtained; and the relation between the accelerator opening degree and the accelerator voltage is determined according to the first accelerator voltage and the second accelerator voltage. According to the embodiment of the invention, the corresponding relation between the accelerator opening degree and the accelerator voltage is calibrated by acquiring the maximum value and the minimum value of the voltage range which can be actually reached by the accelerator. Therefore, the corresponding error between the accelerator opening degree and the accelerator voltage is eliminated. And the corresponding precision between the accelerator opening degre