Random Modeling and Control of Nonlinear Active Suspension

Random Modeling and Control of Nonlinear Active Suspension
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非线性主动悬架的随机建模与控制

DOI:
10.1155/2017/4045796
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发表时间:
2017
影响因子:
--
通讯作者:
Zhaojing Wu
Zhaojing Wu
中科院分区:
工程技术4区
文献类型:
--
作者:
Mingyue Cui;Liangchao Geng;Zhaojing Wu

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针对一种具有非线性主动悬架的四分之一汽车在粗糙路面上行驶的问题,研究了随机建模与控制问题。根据相对运动原理,粗糙路面的影响可以看作是力受到噪声的干扰,并构造了随机模型。通过适当的变换,将模型转化为下三角系统,可作为反演方法。然后设计了一个控制器,通过调整设计参数,使状态的均方收敛到任意小的零邻域。仿真结果验证了该方案的有效性。因此,主动悬架系统为乘客提供了更好的乘坐舒适性和车辆操控性。
For a quarter car with nonlinear active suspension in rough road, the problem of random modeling and control is considered. According to the relative motion principle, the influence of rough road can be seen as that force is disturbed by the noise and a random model is constructed. By an appropriate transform, the model is transformed into a lower triangular system, which can be used as backstepping method. Then a controller is designed such that the mean square of the state converges to an arbitrarily small neighborhood of zero by tuning design parameters. The simulation results illustrate the effectiveness of the proposed scheme. Therefore, the active suspension system offers better riding comfort and vehicle handing to the passengers.
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