建立了 一个三自由度车辆转向侧倾模型，变量赋值已经完成，运行时总是出错，怎么办？？？？
Derivative input 1 of 'qiche2/Integrator1' at time 1.0018734467386454 is Inf or NaN. Stopping simulation. There may be a singularity in the solution. If not, try reducing the step size (either by reducing the fixed step size or by tightening the error tolerances)
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