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A Traction Control System (TCS) is developed for the Anti-lock Braking system (ABS). A Hardware-in-the-loop simulation (HILS) method is used to help debug the control strategy of a TCS for a passenger vehicle. The TCS HILS platform is extended from the ABS test rig by adding a throttle controller and two pressure control solenoid valves. First is established vehicle simulation model that includes a half vehicle dynamic submodel, an engine submodel, a manual transmission system submodel and the tyre submodel. Secondly, the control model of the TCS based on the logical threshold method is included in the same digital simulation software. The digital simulations of the passenger vehicle shows that the control model with different control thresholds as input is correct and it can be run in a real TCS's structure parameters and real electric control unit (ECU). An ECU of TCS with an Infineon's 16-bit microcontroller C167CS as the main central processor unit is designed.

Electronic Stability Program (ESP), also named Vehicle Dynamic Control (VDC), extends the capabilities of the Anti-lock Braking System and the Traction Control System. Firstly, a vehicle dynamic model with 16 DOF, including vehicle body submodel, wheel submodel, force submodel, tire submodel, engine submodel, transmission submodel, also containing braking submodel, and steering submodel is built under SIMULINK software. After completing the simulation under normal mode, A Real-Time Windows Target model under the external mode is produced. The Real-Time Windows Target model for ESP is upgraded to run under Matlab/Simulink/RTW software, to complete the ESP’s Hardware-in-the- Loop simulation (HILS) with the help of the I/O boards produced by the Advantech Co. and the I/O driver block library provided by the Real-Time Windows Target. In the end, an interface for controlling the simulation system is designed.

The performance of Hydraulic Anti-lock Braking System (ABS) is important to vehicle brake safety. In this paper, finite element models and simulation models for studying dynamic response of solenoid valve, a critical part of ABS, are established. Based on the calculation results, which are proved in experiment, several effective methods for improving the performance of the solenoid valve are presented. Furthermore, an ABS-vehicle model is developed to study the influence of hydraulic ABS parameters on braking effect. The simulation results have good agreement with the data of in-vehicle driving experiments.