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S-Function,即system function,通过C语言程序与Simulink相结合设计出所需的轮胎Simulink仿真模块,建立一种基于实验数据的轮胎模型。该模型对轮胎进行了简化,忽略了路面摩擦、车速、轮胎的倾覆力矩和滚动阻力矩。使用该S-Function模型通过轮胎稳态试验和整车双车道切换试验,与CarSim自带轮胎模型的计算仿真结果对比,说明S-Function的轮胎模型具有仿真结果准确可靠,建模简单,易于编程实现的优点。
S-Function, namely system function, through the combination of C language program and Simulink to design the required tire Simulink simulation module, and build a tire model based on experimental data. The model simplifies the tire, ignoring road friction, vehicle speed, tire overturning moment and rolling resistance moment. The S-Function model is compared with the simulation results of CarSim’s own tire model through tire steady state test and full-vehicle two-lane switchover test. It shows that the S-Function tire model has the advantages of accurate and reliable simulation results, simple modeling and easy programming Achieve the advantages.