Patent ID: 11858537
Assignee: HYUNDAI MOTOR COMPANY
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 9:
10. A method of operating a foldable accelerator pedal device in a manual driving mode of an autonomous driving vehicle, the method comprising:
comparing, with a vehicle controller, a driving speed of the autonomous driving vehicle and a road speed limit, and determining, with the vehicle controller, whether or not the driving speed exceeds the road speed limit while the autonomous driving vehicle is in the manual driving mode;
when it is determined that the driving speed exceeds the road speed limit, operating, by the foldable accelerator pedal device, a pedal pad using an actuator actuated for a pop-up operation and a hiding operation of the pedal pad, and activating, using the actuator, a safety mode for sending a warning to a driver by an operation of the pedal pad,
wherein the safety mode includes a haptic mode and a pedal pad hiding mode in which the pedal pad is hidden,
wherein comparing the driving speed and the road speed limit comprises performing, by the vehicle controller, a first check and a second check, which are continuously performed at a time difference on a road having the same speed limit;
when it is determined in the first check that the driving speed of the vehicle exceeds the road speed limit, determining, by the vehicle controller, whether or not an accelerator position sensor signal is generated;
when it is determined that no accelerator position sensor signal is generated, controlling, by the vehicle controller, only a warning device to send a warning to the driver; and
when it is determined that the accelerator position sensor signal is generated, performing the haptic mode by actuating the actuator.