检索结果-内蒙古大学图书馆

control Technology and Applications (CCTA),

作者： Prithvi Reddy Kaushal Darokar Darrell Robinette Mahdi Shahbakhti Maruthi Ravichandran Jeff Doering Michigan Technological University Houghton USA University of Alberta Edmonton CA Research and Advanced Engineering division Ford Motor Company Dearborn USA

ISBN: (数字)9781728171401

ISBN: (纸本)9781728171418

To avoid undesirable vibration and noise caused by backlash in a vehicle driveline, it is essential that an accurate and up-to-date estimate of the backlash size be available. In this work, we develop a practical Kalman filter-based backlash size estimator for automotive drivelines. The developed estimator does not require any additional sensors, and uses available speed measurements from the vehicle CAN bus. We validate this backlash size estimator using experimentally collected vehicle test data, and observe that the backlash size estimates are within 98% of the actual driveline's backlash size. Finally, using a simulation model, we analyze the robustness of the estimator to variations in the trajectories of the actuator torque, and observe an accuracy of more than 99% in the backlash size estimate.

关键词： Torque Engines Shafts Estimation Kalman filters Wheels Mathematical model

来源：评论

学校读者我要写书评

暂无评论

Automotive backlash position estimator for driveline jerk control

Automotive backlash position estimator for driveline jerk co...

引用

control Technology and Applications (CCTA),

作者： Kaushal Darokar Prithvi Reddy Jon Furlich Darrell Robinette Mahdi Shahbakhti Maruthi Ravichandran Jeff Doering Michigan Technological University Houghton USA University of Alberta Edmonton CA Research and Advanced Engineering division Ford Motor Company Dearborn USA

ISBN: (数字)9781728171401

ISBN: (纸本)9781728171418

Backlash position information is important in designing control systems for the purpose of reducing clunk and shuffle in automotive drivelines. Typically, this position information is used by the control system to determine when the driveline has entered or exited the backlash and also to regulate the speed of backlash traversal. To this end, we develop here a Kalman filter-based estimator for the backlash position, utilizing readily available speed measurements from the vehicle CAN bus. The estimator is designed to switch between two modes, since the drivetrain physics is different while traversing the lash and outside of the lash. We validate the estimator using experimentally collected vehicle test data, and observe that the backlash position estimates are accurate to within 20 ms of the test vehicle's actual backlash position. Furthermore, we verify the robustness of the system to CAN jitter in the speed measurements.

关键词： Vehicle dynamics Torque Wheels Engines Kalman filters Switches Velocity measurement

来源：评论

学校读者我要写书评

暂无评论

Preface

Lecture Notes in Networks and Systems

引用

Lecture Notes in Networks and Systems 2023年 836 LNNS卷 v页

作者： Gini, Giuseppina Nijmeijer, Henk Filev, Dimitar Dipto di Elettronica e Informazione Politecnico di Milano Milan Italy Department of Mechanical Engineering Eindhoven University of Technology Noord-Brabant Eindhoven Netherlands Research and Advanced Engineering Ford Motor Company DearbornMI United States

来源：评论

学校读者我要写书评

暂无评论

Performance Analysis of Cellular-V2X with Adaptive & Selective Power control

Performance Analysis of Cellular-V2X with Adaptive & Selecti...

引用

Connected and Automated Vehicles Symposium (CAVS)

作者： Md Saifuddin Mahdi Zaman Behrad Toghi Yaser P. Fallah Jayanthi Rao Connected and Autonomous Vehicle Research Lab (CAVREL) University of Central Florida Orlando FL USA Research and Advanced Engineering Ford Motor Company Dearborn MI USA

ISBN: (数字)9781728190013

ISBN: (纸本)9781728190020

LTE based Cellular Vehicle-To-Everything (C-V2X) allows vehicles to communicate with each other directly without the need for infrastructure and is expected to be a critical enabler for connected and autonomous vehicles. V2X communication based safety applications are built on periodic broadcast of basic safety messages with vehicle state information. Vehicles use this information to identify collision threats and take appropriate countermeasures. As the vehicle density increases, these broadcasts can congest the communication channel resulting in increased packet loss; fundamentally impacting the ability to identify threats in a timely manner. To address this issue, it is important to incorporate a congestion control mechanism. Congestion management scheme based on rate and power control has proved to be effective for DSRC. In this paper, we investigate the suitability of similar congestion control to C-V2X with particular focus on transmit power control. In our evaluation, we include periodic basic safety messages and high priority event messages that are generated when an event such as hard braking occurs. Our study reveals that while power control does not improve packet delivery performance of basic safety messages, it is beneficial to high priority event message delivery. In this paper, we investigate the reasons for this behavior using simulations and analysis.

关键词： Power control Packet loss Communication channels Safety Performance analysis Vehicle-to-everything Long Term Evolution

来源：评论

学校读者我要写书评

暂无评论

Mpc-based vibration control and energy harvesting using an electromagnetic vibration absorber with inertia nonlinearity

arXiv

引用

arXiv 2020年

作者： Chen, Kaian Li, Zhaojian Tai, Wei-Che Wu, Kai Wang, Yan Department of Mechanical Engineering Michigan State University East LansingMI48824 United States Research & Advanced Engineering Ford Motor Company DearbornMI48121 United States

Simultaneous vibration control and energy harvesting of vehicle suspensions has attracted great research interests over the past decades. However, existing frameworks tradeoff suspension performance for energy recovery and are only responsive to narrow-bandwidth vibrations. In this paper, a new energy-regenerative vibration absorber (ERVA) using a ball-screw mechanism is investigated. The ERVA system is based on a rotary electromagnetic generator with adjustable nonlinear rotational inertia which passively increases the moment of inertia as the vibration amplitude increases. This structure is effective for energy harvesting and vibration control without increasing the suspension size. Furthermore, a nonlinear model predictive controller (NMPC) is applied to the system for further performance enhancement where we exploit road profile information as a preview. The performance of NMPCbased ERVA is demonstrated in a number of simulations and superior performance is demonstrated. Copyright © 2020, The Authors. All rights reserved.

关键词： Vibration control

来源：评论

学校读者我要写书评

暂无评论

Online nonlinear system identification with parameter constraints: Application to automotive engine systems

引用

ASME 2019 Dynamic Systems and control Conference, DSCC 2019

作者： Chen, Kaian Li, Zhaojian Wang, Yan Wang, Jing Wu, Kai Filev, Dimitar P. Department of Mechanical Engineering Michigan State University East LansingMI48823 United States Research and Advanced Engineering Ford Motor Company DearbornMI48124 United States

ISBN: (纸本)9780791859155

In this paper, we treat the problem of online nonlinear system identification with parameter constraints. This approach isbased upon our prior work on nonlinear system identificationthat exploits evolving Spatialoral Filters (STF) to dynamically decompose system's input/output space into a nonlinearcombination of weighted local models. We extend the nonlinearsystem identification framework with the capability of dealingwith linear equality and inequality parameter constraints. Weleverage the gradient projection method in the local model parameter estimation process to inherently enforce the parameterconstraints while retaining optimality. We apply the proposed algorithm to a turbo-charged gasoline engine system and promising results are demonstrated by experimental data. Copyright © 2019 ASME.

关键词： Nonlinear systems

来源：评论

学校读者我要写书评

暂无评论

Leveraging Model Predictive control As A Calibration Method To Develop Implementable Vehicle Dynamics controls

Leveraging Model Predictive Control As A Calibration Method ...

引用

American control Conference

作者： Jose Velazquez Alcantar Rajit Johri Ming Kuang Advanced Research and Engineering Ford Motor Company Dearborn MI USA

ISBN: (纸本)9781538679012;9781538679265

As on-board computing power in automotive ECUs grows, the possibility of running an online Model Predictive control (MPC) algorithm is becoming a reality. However, there still exists a gap between developmental hardware used for MPC development and production-grade hardware. Nevertheless, engineers can use MPC to investigate the most optimal way of obtaining the desired control output. This paper uses the front/rear wheel torque allocation problem in an electric all-wheel-drive (eAWD) vehicle as a case study to investigate how MPC can be leveraged as a calibration method to develop an implementable torque split control system with a good initial calibration. The eAWD powertrain architecture is modeled and integrated with a high fidelity CarSim vehicle dynamics model. An idealized MPC controller is developed and used in several use cases with the CarSim vehicle in the loop to collect data on how the MPC controller obtains the optimal wheel torque distribution. The collected data is then used to develop an implementable control system which is easily calibrateable. The performance of the implementable control system is then compared to the idealized MPC controller in the simulation environment and it is shown that the implementable controller obtains similar performance to the idealized MPC controller.

关键词： Tires Axles Torque Load modeling Wheels Force Vehicle dynamics

来源：评论

学校读者我要写书评

暂无评论

Sensitivity of Three-Way Catalyst Light-Off Temperature to Air-Fuel Ratio

引用

Emission control Science and Technology 2018年第3期4卷 136-142页

作者： Getsoian, Andrew Bean Theis, Joseph R. Lambert, Christine K. Research and Advanced Engineering Ford Motor Company 2101 Village Road DearbornMI48121 United States

The operating conditions of the automotive three-way catalyst (TWC) are characterized by continuous variation of the air-fuel ratio (λ) that determines the composition of the exhaust supplied to the catalyst. It is well known that the ability of the TWC to simultaneously catalyze reduction of NOx and oxidation of CO and hydrocarbons is sensitive to the air-fuel ratio. In efforts to formulate improved TWCs with greater activity at lower temperatures, the impact of air-fuel ratio on light-off temperature must therefore be considered. This paper reports an investigation of the impact of air-fuel ratio on the temperatures at which representative exhaust species in a simulated exhaust mixture reach 90% conversion (T90) over a family of rhodium-based model catalysts, with focus on the performance of a recently developed catalyst comprising rhodium supported on titania-modified alumina with exceptional light-off performance. Over a range of air-fuel ratios 0.977 200 °C between 0.995 1.001;and the T90s for representative hydrocarbons ethylene, propylene, and propane decrease by more than 100 °C between 0.977 © 2018, ford motor company, under exclusive license to Springer International Publishing AG, part of Springer Nature.

关键词： Propane

来源：评论

学校读者我要写书评

暂无评论

Uncertainty Quantification Using Generalized Polynomial Chaos for Online Simulations of Automotive Propulsion Systems*

Uncertainty Quantification Using Generalized Polynomial Chao...

引用

American control Conference (ACC)

作者： Hang Yang Narayanan Kidambi Yuji Fujii Alex Gorodetsky Kon-Well Wang Department of Mechanical Engineering University of Michigan Ann Arbor Michigan USA Research & Advanced Engineering Ford Motor Company Dearborn Michigan USA Department of Aerospace Engineering University of Michigan Ann Arbor Michigan USA

ISBN: (数字)9781538682661

ISBN: (纸本)9781538682678

Online simulations conducted in vehicles can enable predictive control of automotive systems. This capability can be especially valuable for complex propulsion systems to manage performance, safety, and efficiency under changing drive conditions. Reliable online simulations require accurate models. However, modeling errors are unavoidable, and the inputs from the driver and environment are subject to uncertainty and generally unknown a priori, rendering the system stochastic. Furthermore, limited computing resources in a vehicle can prohibit solving stochastic systems, posing a major challenge. This paper seeks to alleviate these computational bottlenecks by utilizing generalized Polynomial Chaos to efficiently propagate and quantify uncertainty without loss of accuracy for online propulsion system simulations. To demonstrate the effectiveness of this method, uncertainty quantification is performed for simulations of vehicle launch where both model and input uncertainties are considered. A standard Monte Carlo method is used as a baseline for comparison. It is shown that, for the same accuracy, the proposed method is more than two orders of magnitude faster than a Monte Carlo method. A variance-based sensitivity analysis is also used to quantify the statistical contribution from each uncertainty source to the output. The outcome suggests that the proposed method is well-suited to automotive applications where fast and accurate on-board simulation capabilities are required.

关键词： Torque Uncertainty Computational modeling Propulsion Engines Chaos Automotive engineering

来源：评论

学校读者我要写书评

暂无评论

Automotive controls: Past, present, & future

Advanced Control for Applications: Engineering and Industria...

引用

advanced control for Applications: engineering and Industrial Systems 2019年第1期1卷

作者： Stephens, Craig Controls & Automated Systems Research and Advanced Engineering Ford Motor Company DearbornMI United States

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：