Robot driver for vehicle durability emission test on chassis dynamometer

Abstract

A method for a vehicle durability emission test using a robot driver instead of human drivers on the chassis dynamometer is presented.The system architecture of vehicle durability emission test cell,the road load simulation strategy and the tele-monitoring system based on Browser/Client structure are described.Furthermore,the construction of the robot driver,vehicle performance self-learning algorithm,multi-mode vehicle control model and vehicle speed tracking strategy based on fuzzy logic are also discussed.Besides,the capability of control parameters self-compensation on-line makes it possible to compensate the wear of vehicle components and the variety of clutch true bite point during the long term test.Experimental results show that the robot driver can be applicable to a wide variety of vehicles and the obtained results stay within a tolerance band of ±2km/h.Moreover the robot driver is able to control tested vehicles with good repeatability and consistency;therefore,this method presents a solution to eliminate the uncertainty of emission test results by human drivers and to ensure the accuracy and reliability of emission test results.