通过优化控制器增益参数加强全车动态模型的振动控制

IF 1.5 4区 工程技术 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS
Leonardo Valero Pereira, Walter Jesus Paucar Casas, Herbert Martins Gomes, Luis Roberto Centeno Drehmer, Emanuel Moutinho Cesconeto
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引用次数: 0

摘要

设计/方法/途径 对于经典设计的线性二次调节器(LQR)控制,振动衰减性能取决于加权矩阵 Q 和 R。本文提出了一种方法,利用遗传算法确定这些矩阵的最佳元素,以提高控制器性能。主动控制在一个八自由度(8-DOF)车辆悬架模型中实现,该模型受标准 ISO 道路轮廓的影响。研究结果 使用 12 个 Q 和 R 优化参数的控制器提供了最佳的振动衰减效果,显著降低了驾驶员座椅和车身的均方根加速度。研究局限性/意义 该研究对各类主动控制系统,尤其是基于 LQR 的系统具有积极意义,这一点已在论文中测试的多体动态系统中得到验证。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Vibration control enhancement in a full vehicle dynamic model by optimization of the controller’s gain parameters

Purpose

In this paper, improvements in reducing transmitted accelerations in a full vehicle are obtained by optimizing the gain parameters of an active control in a roughness road profile.

Design/methodology/approach

For a classically designed linear quadratic regulator (LQR) control, the vibration attenuation performance will depend on weighting matrices Q and R. A methodology is proposed in this work to determine the optimal elements of these matrices by using a genetic algorithm method to get enhanced controller performance. The active control is implemented in an eight degrees of freedom (8-DOF) vehicle suspension model, subjected to a standard ISO road profile. The control performance is compared against a controlled system with few Q and R parameters, an active system without optimized gain matrices, and an optimized passive system.

Findings

The control with 12 optimized parameters for Q and R provided the best vibration attenuation, reducing significantly the Root Mean Square (RMS) accelerations at the driver’s seat and car body.

Research limitations/implications

The research has positive implications in a wide class of active control systems, especially those based on a LQR, which was verified by the multibody dynamic systems tested in the paper.

Practical implications

Better active control gains can be devised to improve performance in vibration attenuation.

Originality/value

The main contribution proposed in this work is the improvement of the Q and R parameters simultaneously, in a full 8-DOF vehicle model, which minimizes the driver’s seat acceleration and, at the same time, guarantees vehicle safety.

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来源期刊
Engineering Computations
Engineering Computations 工程技术-工程:综合
CiteScore
3.40
自引率
6.20%
发文量
61
审稿时长
5 months
期刊介绍: The journal presents its readers with broad coverage across all branches of engineering and science of the latest development and application of new solution algorithms, innovative numerical methods and/or solution techniques directed at the utilization of computational methods in engineering analysis, engineering design and practice. For more information visit: http://www.emeraldgrouppublishing.com/ec.htm
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