摘要
汽车是一个复杂的非线性动力学系统,在时域范围内研究路面不平度模型极其重要。三角级数法、有理函数法和快速逆傅里叶变换法是最常用的三种路面重构方法。用Matlab软件编写了三种方法的仿真程序,并与标准的功率谱进行了对比。结果表明,三种方法的仿真结果都可以很好地同标准功率谱吻合,模拟的道路数据稳定可靠,都可以方便地应用于汽车的仿真研究。
A ear is a complicated nonlinear dynamical model, and it is extremely important to study road roughness in time do- main. It is common to reconstruct road with trigonometric method, rational function method and inverse fast Fourier transform method. Simulation programs are compiled with Matlab software, and simulation results are contrasted with standard power spectral. Results show that simulation result based on every method was agreed well with standard power spectral. Reconstruction road data is reliable, and is convenient to he applied in vehicle development.
出处
《农业装备与车辆工程》
2013年第7期33-35,55,共4页
Agricultural Equipment & Vehicle Engineering
关键词
路面不平度
仿真
功率谱密度
对比
road roughness
simulation
power spectral density
comparison
