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A DESIGN METHODOLOGY FOR VEHICLE IDENTIFICATION AND RIDE QUALITY OPTIMIZATION.

机译:车辆识别和乘车质量优化的设计方法。

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摘要

To maximize vehicle ride quality a number of different vehicle parameters could be changed which would influence the ride quality. Here the effects of changes in engine mount parameters and their influence on ride quality is investigated. The vehicle under consideration is a light truck manufactured by Ford Motor Company. This problem is formulated in the following steps: (1) Vehicle modeling and simulation; (2) Vehicle parameter and state identification; (3) Ride Quality optimization; and (4) Engine mount design using optimum parameters. Modern control theory is used in formulation solutions to these problems. Two vehicle models, a simple 3 degrees-of-freedom (DOF) model simulating vehicle bounce motion, and a 16 DOF model describing frame-engine-cab interaction are used to simulate vehicle motions. Identification is performed by parallel Adaptive Extended Kalman filters which simultaneously estimate vehicle parameters and states processing vehicle acceleration measurements. Linear Quadratic Regulator (LQR) control theory is used to optimize the engine mount design for improved ride quality. The optimized vehicle's performance is compared with several frequency domain ride quality criteria currently used in the automotive industry. The optimal engine mount design uses state feedback to control engine mount stiffness and damping properties. This creates an active engine mount design. A new frequency domain ride quality measure is derived computed from singular values of the multi-input multi-output vehicle transfer function matrix. This singular value ride quality measure has the ability to incorporate the combined effects of engine and road inputs (at all four wheel locations) into a scalar analysis measure.
机译:为了使车辆行驶质量最大化,可以改变许多不同的车辆参数,这会影响行驶质量。这里研究了发动机安装参数的变化及其对乘坐质量的影响。所考虑的车辆是福特汽车公司制造的轻型卡车。这个问题可以通过以下步骤来解决:(1)车辆建模和仿真; (2)车辆参数及状态识别; (3)骑乘质量优化; (4)使用最佳参数的发动机支架设计。现代控制理论用于解决这些问题。两种车辆模型,模拟车辆弹跳运动的简单3自由度(DOF)模型和描述框架-发动机-驾驶室相互作用的16 DOF模型用于模拟车辆运动。识别由并行自适应扩展卡尔曼滤波器执行,该滤波器同时估计车辆参数并状态处理车辆加速度测量。线性二次调节器(LQR)控制理论用于优化发动机支架设计,以提高行驶质量。将优化的车辆性能与当前在汽车行业中使用的几个频域行驶质量标准进行比较。最佳的发动机支架设计使用状态反馈来控制发动机支架的刚度和阻尼特性。这将创建一个主动的发动机支架设计。从多输入多输出车辆传递函数矩阵的奇异值中得出新的频域乘车质量度量。此奇异值行驶质量度量具有将引擎和道路输入(在所有四个车轮位置)的组合影响合并到标量分析度量中的能力。

著录项

  • 作者

    WISE, KEVIN ANDREW.;

  • 作者单位

    University of Illinois at Urbana-Champaign.;

  • 授予单位 University of Illinois at Urbana-Champaign.;
  • 学科 Engineering Automotive.
  • 学位 Ph.D.
  • 年度 1987
  • 页码 388 p.
  • 总页数 388
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自动化技术及设备;
  • 关键词

  • 入库时间 2022-08-17 11:50:59

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