BrakeRobot_TECH RQMT-.docx

TECHNICAL REQUIREMENTS

Brake Pedal Robot System General: The Brake Pedal Robot System is used to apply accurate inputs to a vehicle's brake pedal for braking characterization and handling behavior measurement. It is typically used to apply step or ramped force or position inputs to the brake pedal. It can also be used to control vehicle deceleration during brake burnishing tests. The robot provides a repetitive brake application thereby removing human variability in the test environment. When combined with other robotic vehicle control or target moving equipment, it can be used to conduct synchronized multi-vehicle testing. This capability is often required for testing of Advanced Driver Assistance Systems (ADAS) and autonomous systems.

Technical Requirements: The vehicle brake pedal robot is a device used to precisely control the brake pedals of a vehicle. The brake pedal can be controlled by pre-programming pedal position or application force profiles in open loop mode (i.e. the pedal is applied without regard to vehicle response) or it can be controlled in a closed-loop mode by sensors external to the robot, such as vehicle acceleration or brake system pressure. Vehicle speed and other vehicle response data signals can be interpreted by the controller and used as criteria for starting or stopping the brake application force. The controller also outputs the brake pedal position and force at periodic time intervals.

Must have the ability to receive signals for vehicle speed, acceleration, and other analog signals such as brake system pressure to determine when to execute or terminate a maneuver or for use in the controller feedback loop.

Must be able to receive data over the CAN data bus and transmit data over the CAN data bus to a data recorder. The data generated by the robot such as pressure, distance, and application rate, will be transferred over the CAN bus.

Must allow pedal to be manually applied by driver at all times.

Must have an emergency stop button that cuts all power to the system, returns complete pedal control to the driver, and can be placed independently of other hardware such that it can be located in an accessible location to the driver.

Must be able to integrate with steering wheel robot to conduct path-following tests. A single emergency stop button shall disable both systems simultaneously. Aberdeen Test Center has an existing inventory of AB Dynamics steering robots and remote target systems with which the brake robot system must integrate. Specifically the AB Dynamics Guided Soft Target and Soft Pedestrian Target for ADAS testing and the Model SR60 steering robot for vehicle performance testing.

Must interface to a machined mount or cradle that can be mounted to a seat frame or other rigid location.