Brake Operation Algorithm of Driver Model in Simulation

The authors are developing a simulation program to evaluate the effect of preventive safety assistance systems. In the program, a driver model conducts brake operation to avoid a collision. Whether the brake pedal force is appropriately calculated relates to the accuracy of the simulation. In the process there are mainly two factors to be determined; the braking timing and the brake pedal force after starting brake operation. To establish the algorithms for these factors, the authors analyzed several experimental results concerning driving behaviors and obtained necessary equations including the inverse of Time to Collision (iTTC) and correction term to calculate the timing and the pedal force, respectively. These algorithms can assure the high-reproduction fidelity of the simulation program.