A method for estimation of vehicle inertial parameters
A method for estimation of vehicle inertial parameters
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DOI：
10.1080/00423110902939863
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发表时间：
2010-01-01
影响因子：
3.6
通讯作者：
Zhang, Nong
中科院分区：
文献类型：
--
作者：
Rozyn, Matthew;Zhang, Nong
本文提出了一种新的方法来估计当前的簧载质量惯性参数的车辆，如质量，俯仰和侧倾质量的惯性矩，横向和纵向的重心位置。该方法测量簧载质量响应时，车辆行驶在一个未知的和未测量的随机道路轮廓。从这些测量中，提取等效自由衰减响应，并使用模态分析技术来估计簧载质量的固有频率，阻尼比和模态振型。该信息与简化的车辆估计模型、最小二乘分析和已知的等效刚度参数相结合，以估计车辆的惯性参数。从几个仿真实例中得到的结果表明，惯性参数的估计一般具有较小的相对误差。
In this paper, a new method is presented for estimating the current sprung mass inertial parameters of a vehicle, such as the mass, pitch and roll mass moments of inertia, and lateral and longitudinal centre of gravity locations. The method measures the sprung mass response when the vehicle is driven over an unknown and unmeasured random road profile. From these measurements, the equivalent free-decay responses are extracted and modal analysis techniques used to estimate the sprung mass natural frequencies, damping ratios and mode shapes. This information is combined with a simplified vehicle estimation model, least squares analysis and known equivalent stiffness parameters to estimate the vehicles' inertial parameters. The results obtained from several simulation examples show that estimates of the inertial parameters generally have small relative errors.