HARDWARE-IN-THE-LOOP SIMULATION OF VEHICLE DRIVING STATE FOR ESP DYNAMIC ELECTRICAL PERFORMANCE TESTING

Abstract

- With the development of autonomous driving technology, the ESP (Electronic stability program) has been widely used in the vehicle field. The safety and stability of vehicle driving have always been a particularly important issue. The complexity of electronic control systems makes it impractical to conduct online electrical performance testing on real vehicles in research and development. In this paper, a new signal simulation method for the ESP dynamic electrical performance testing is proposed by comparing the HIL (Hardware-in-the-loop) simulation methods for vehicles and analyzing the impact of the ESP on vehicle safety and stability. To begin with, a comprehensive structural design scheme for the HIL simulation platform which is proposed by analyzing the ESP structure and control principle. Then, the principle of lateral acceleration and yaw rate that is generated by vehicle which is analyzed, and a three-dimensional model of the combined simulation device was built. Subsequently, the physical development of the simulation device was completed. Finally, the feasibility of the simulation device was verified. The experimental results indicate that the simulation device can generate continuous lateral acceleration and yaw rate signals. With the motor rotation changes, the generated signal error is different. But the generated overall error is relatively small. Therefore, the simulation device can meet the usage requirements.