Patent ID: 8167093

Claim:
A control method for a power ramp for a vehicle comprising; an installation command determining step determining whether an installation command is input by a button operating to extract a main ramp; a parking determining step determining whether a vehicle is parked if it is determined based on the result of the installation command determining step that the installation command is input; a door open determining step determining whether a door of the vehicle is open to extract the main ramp; a ramp extracting step extracting the main ramp by operating a motor and an alarming buzzer sound simultaneously, if it is determined that the installation command is input and that the door is open simultaneously; a stop signal determining step determining whether a stop signal is input during the ramp extracting step; an overload determining step determining whether an input current is over a predetermined limit current, to apply an overload to the motor during the ramp extracting step; a complete extraction determining step determining whether the main ramp is extracted completely by determining whether there is a limit signal; an extraction stopping step stopping the operation of the motor and stopping the alarming buzzer sound simultaneously, if it is determined that the main ramp is completely extracted; a motor stopping step stopping the motor to stop the extraction of the main ramp, if it is determined based on the result of the overload determining step that the motor is overloaded; an overload settlement determining step continuously re-comparing the input current and the limit current, and determining whether the input current returns below the limit current, if the motor stopping step is started; and a time pass determining step determining whether the time taken for the input current to return below the limit current is over a predetermined time if it is determined based on the result of the overload settlement determining step that the input current returns below the limit current, and continuing the ramp extracting step if it is determined that the time taken for the input current to return below the limit current is over the predetermined time.