Download or read book Modeling and Control of an Adaptive Tire inflation System Based on In tire Sensing Feedback written by Da Fang and published by . This book was released on 2017 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tire contact area is an important feature that influences the performance of a ground wheeled vehicle, especially on soft terrain. This thesis evaluates a system meant to control tire-surface contact area by inflating and deflating the tire while the vehicle is in motion. The system includes a measurement of the vertical deflection of the tire using ultrasonic distance sensors, from which tire-surface contact area can be inferred from a model basis. In order to validate the concept and determine limits on such a system, a model and simulation of a controlled system has been developed. For the purposes of this study, it is assumed that the tire is operating on a hard (i.e., non-deformable) terrain, the contact area is elliptical, and the tire deflection can be predicted by a 1-D stiffness model. The system was evaluated using three driving scenarios, namely a change in terrain stiffness, changes in vertical applied load, and pressure changes in the tire due to change in temperature. It is shown that inflating and deflating the tire is effective in making up for changes in driving condition. The influence of sensor response characteristics, such as time delay and noise, were also included in the simulation and evaluated. The time delay was estimated based on the time to obtain the deflection based on the period of the wheel spin; the influence of the time delay can be minimized by changing the proportional and integral gains. The results also suggest that the system is actually robust to the influence of noise. Some suggestions for future work on this problem are provided.
Download or read book Recent Trends in Manufacturing and Materials Towards Industry 4 0 written by Muhammed Nafis Osman Zahid and published by Springer Nature. This book was released on 2021-03-22 with total page 1025 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents part of the proceedings of the Manufacturing and Materials track of the iM3F 2020 conference held in Malaysia. This collection of articles deliberates on the key challenges and trends related to manufacturing as well as materials engineering and technology in setting the stage for the world in embracing the fourth industrial revolution. It presents recent findings with regards to manufacturing and materials that are pertinent towards the realizations and ultimately the embodiment of Industry 4.0, with contributions from both industry and academia.
Download or read book An Evaluation of Existing Tire Pressure Monitoring Systems written by Paul Arthur Grygier and published by . This book was released on 2001 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Adaptive Tire Model For Dynamic Tire Road Friction Force Estimation written by Jonathan Spike and published by . This book was released on 2013 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: As vehicle dynamics research delves deeper into better insights in performance, modeling, and vehicle controls, one area remains of utmost importance: tire and road friction forces. The vehicle's interaction with the road remains the dominant mean of vehicle control. Ultimately, the tire-road interaction will determine the majority of the vehicle's capabilities and as the understanding of the interface improves, so too can the performance. With more computationally intensive systems being instrumented into modern vehicle systems, one is able to observe a great deal of important vehicle states directly for the remaining vehicle information; excellent estimation techniques are providing the rest of the insights. This study looks at the possible improvements that can be observed by implementing an adaptive dynamic tire model that is physical and flexible enough to permit time varying tire performance. The tire model selected is the Average Lumped LuGre Friction Tire Model, which was originally developed from physical properties of friction and tire systems. The material presented here examines the possibility of an adaptive tire model, which can be implemented on a real-time vehicle platform. The adaptive tire model is just one section of an entire control strategy that is being developed by General Motors in partnership with the University of Waterloo. The approach allows for estimated and measured vehicle information to provide input excitation for the tire model when driven with real-world conditions that enabling tire estimations. The tire model would then provide the controller information indicating the expected tire capacity and compares it with the instantaneous loading. The adaptive tire model has been tested with flat road experimental cases and the results provided reasonable estimates. The experimentation was performed with a fully instrumented research vehicle that used in-wheel force transducers, and later repeated with a completely different non-instrumented fully electric vehicle. The concepts and investigation presented here has initiated the ground work for a real-time implementation of a full adaptive tire model. Further work is still required to evaluate the influence of a range of operating conditions, tire pressure, and of different tire types. However, the findings indicate that this approach can produce reasonable results for the specified conditions examined.
Download or read book Vehicle Dynamics and Control written by Rajesh Rajamani and published by Springer Science & Business Media. This book was released on 2006-06-04 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first ever book that provides a comprehensive coverage of automotive control systems. The presentation of dynamic models in the text is also unique. The dynamic models are tractable while retaining the level of richness that is necessary for control system design. Much of the mateiral in the book is not available in any other text.
Download or read book Advanced Motion Control and Sensing for Intelligent Vehicles written by Li Li and published by Springer Science & Business Media. This book was released on 2007-11-24 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides the latest information in intelligent vehicle control and intelligent transportation. Detailed discussions of vehicle dynamics and ground-vehicle interactions are provided for the modeling, simulation and control of vehicles. It includes an extensive review of past and current research achievements in the intelligent vehicle motion control and sensory field, and the book provides a careful assessment of future developments.
Download or read book Central Tire Inflation Systems written by and published by . This book was released on 1994 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1978 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Towards Intelligent Tire and Self powered Sensing Systems written by Hassan Askari and published by . This book was released on 2019 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tires are the interface between a vehicle and the ground providing forces and isolation to the vehicle. For vehicle safety, stability, maintenance, and performance, it is vital to estimate or measure tire forces, inflation pressure, and contact friction coefficient. Estimation methods can predict tire forces to some extent however; they fail in harsh maneuvers and are dependent on road surface conditions for which there is no robust estimation method. Measurement devices for tire forces exist for vehicle testing but at the cost of tens of thousands of dollars. Tire pressure-monitoring sensors (TPMS) are the only sensors available in newer and higher end vehicles to provide tire pressure, but there are no sensors to measure road surface condition or tire forces for production vehicles. With the prospect of autonomous driving on roads in near future, it is paramount to make the vehicles safe on any driving and road condition. This is only possible by additional sensors to make up for the driver's cognitive and sensory system. Measuring road condition and tire forces especially in autonomous vehicles are vital in their safety, reliability, and public confidence in automated driving. Real time measurement of road condition and tire forces in buses and trucks can significantly improve the safety of road transportation system, and in miming/construction and off-road vehicles can improve performance, tire life and reduce operational costs. In this thesis, five different types of sensors are designed, modelled, optimized and fabricated with the objective of developing an intelligent tire. In order to design these sensors,~both electromagnetic generator (EMG) and triboelectric nanogenerators (TENG) are used. In the first two initial designed sensors, with the combination of EMG and TENG into a single package, two hybridized sensors are fabricated with promising potential for self-powered sensing. The potential of developed sensors are investigated for tire-condition monitoring system (TCMS). Considering the impressive properties of TENG units of the developed hybridized devices, three different flexible nanogenerators, only based on this newly developed technology, are developed for TCMS. The design, modelling, working mechanism, fabrication procedure, and experimental results of these TENG sensors are fully presented for applications in TCMS. Among these three fabricated sensors, one of them shows an excellent capability for TCMS because of its high flexibility, stable and high electrical output,and an encapsulated structure. The high flexibility of developed TENG sensor is a very appealing feature for TCMS, which cannot be found in any available commercial sensor. The fabricated TENG sensors are used for developing an intelligent tire module to be eventually used for road testing. Several laboratory and road tests are performed to study the capability of this newly developed TENG-based sensor for tire-condition monitoring system. However the development of this sensor is in its early stage, it shows a promising potential for installation into the hostile environment of tires and measuring tire-road interacting forces. A comparative studies are provided with respect to Michigan Scientific transducer to investigate the potential of this flexible nanogenerator for TCMS. It is worth mentioning that this PhD thesis presents one of the earliest works on the application of TENG-based sensor for a real-life system. Also, the potential of commercially available thermally and mechanically durable Micro Fiber Composite (MFC) sensor is experimentally investigated for TCMS with fabricating another set of intelligent tire. Several testing scenarios are performed to examine the potential of these sensors for TCMS taking into account a simultaneous measurement from Michigan Scientific transducer. Although both flexibility and the cost of this sensor is not comparable with the fabricated TENG device, they have shown a considerable and reliable performance for online measuring of tire dynamical parameters in different testing scenarios, as they can be used for both energy harvesting and sensing application in TCMS. The extensive road testing results based on the MFC sensors provide a valuable set of data for future research in TCMS. It is experimentally shown that MFC sensor can generate up to 1.4 $\mu W$ electrical power at the speed of 28 $[kph]$. This electrical output shows the high capability of this sensor for self-powered sensing application in TCMS. Results of this thesis can be used as a framework by researchers towards self-powered sensing system for real-world applications such as intelligent tires.
Download or read book Tires written by Charles E. Rabuse and published by Nova Science Publishers. This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proper tire inflation is important for several reasons. Underinflated tires experience a greater amount of sidewall flexion than properly inflated tires, resulting in decreased fuel economy, sluggish handling, longer stopping distances, increased stress to tire components, and heat build-up that can lead to catastrophic failure of the tire, such as cracking, component separation, or blow-out. These catastrophic failures can cause loss of vehicle control and may result in a crash. This book presents an analysis of the data collected through the Tire Pressure Monitoring System-Special Study (TPMS-SS) as it pertains to the effectiveness of TPMS in promoting proper tire inflation.
Download or read book Technical Literature Abstracts written by Society of Automotive Engineers and published by . This book was released on 2000 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tire Pressure Systems Management CTIS Type For Medium and Heavy Duty Highway Vehicles written by Truck and Bus Tire Committee and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SAE recommended practice defines the system and component functions, measurement metrics, testing methodologies for evaluating the functionality and performance of ground vehicle CTIS. Systems of this type allow the driver to select the operational tire pressure set point (TPSP) based on off-highway conditions, and, upon returning to highway operations, maintain the inflation pressure to the vehicle specified level.These systems are recommended to address all serviceable tires as originally installed on a vehicle by the OEM and/or specialty vehicle manufacturer, and, for the aftermarket (including replacement or spare parts) are recommended (but optional) to address all tire/rim combinations installed after initial vehicle sale or in-use dates.Systems for use by military and some other very rigorous off-road applications require such extreme performance requirements, particularly at very high and low temperature and other combat-based extremes that such applications may fall outside the recommended parameters of the subject document. In those cases, it's the responsibility of the procuring customer, vehicle OEM, and applicable component(s) OEM to determine what compromises might be required, and the suitability of design and performance solutions that may be outside of those recommended here.This document is applicable to all axle and all wheel combinations for the following vehicle types, but does not preclude it's use on other vehicle types - single unit powered vehicles exceeding 7257 kg (16,000_US lbs) gross vehicle weight rating (GVWR), and multi-unit vehicle combinations, up to three (3) towed units, which use an SAE J560 connector for power and/or communication, or equivalent successor connector technology. For combination vehicles including two or more trailers, the dolly axles are also included. The included vehicles can be newly manufactured vehicles or existing vehicles, fitted with air or hydraulic braking systems.Special Note: Equipment known as dual tire equalizers' are commonly used with this category of vehicles. When installing a CTIS system, dual tire equalizers systems are not recommended as they run counter to the purpose of the management system.NOTE: The following systems are not being addressed in this edition of the subject document. 1Tire Pressure Monitoring Systems - these systems have been addressed under SAE J2848-1. 2Tire Pressure Maintenance Systems - these systems have been addressed under SAE J2848-2. Within the medium and heavy-duty vehicle industry, the equipment supplier community has responded to the need to manage inflation pressure for greater vehicle operational performance when transitioning from improved roadways to unimproved roadways and back, by developing onboard adjustable tire pressure systems. The central tire inflation system (CTIS) is one such system. Through a CTIS, the vehicle driver from the cab position is capable of selecting a pressure level based on the ground flotation conditions, and the vehicle load, for uninterrupted operations. Because operators will expect these systems to provide the selected level of pressure and to maintain that level of pressure especially as the vehicle returns to highway operations, it is important that all marketed systems respond with a minimum level of performance to assure continued in-service safety.In the "off-road" or unimproved roadway environment, the driver typically will operate at a reduced vehicle speed and may choose a reduced tire inflation pressure. Under these conditions, it is important to maintain a balance between the tire's flotation performance at high deflection and the tire's durability. These characteristics are particular to each tire manufacturer's product, and therefore it is not practical to define one universal set of operating criteria nor a singular limiting threshold for the off-road environment. At the same time, when these vehicles return to highway operations, it is expected that tire pressure systems of this category, having survived the harsh environments to which they were exposed, will be able to bring the tire's inflation pressure back to the specified highway pressure level, and maintain it.For both SAE document SAE J2848/1 and SAE J2848/2, the system performance and communications to the driver functions have been made coherent and consistent. Under this document, it is essential that the driver communications and performance thresholds, especially when operating to highways conditions, also be consistent with the document series. Each management system must still keep the driver informed of the status of the pressure level and make him aware when the system installed is no longer performing its intended function. This document captures the attributes of pressure management systems while retaining the alerts and warnings so vitally important to the driver.
Download or read book Design and Analysis of Intelligent Tires written by Xiangwen Zhang and published by Academic Press. This book was released on 2017-05 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Design and Analysis of Intelligent Tires covers tire temperature, pressure, friction, wear, and aging. While its main focus is intelligent tire properties analysis and application development, it also addresses intelligent technology, control theory, and sensor technology, providing users with strict theoretical analysis and detailed technology design processes for intelligent tires. Systems featured include tire pressure monitoring, vehicle active braking, steering, and tire state intelligent regulating systems. The text will be of interest to a wide swath of professionals, including those working in vehicle electronics, vehicle control technology, and vehicle tire technology. Users will find a plethora of theoretical studies, design methods, and real-world implementations and applications. Provides the critical aspects of intelligent tires, including properties analysis and application development Addresses control theory, sensor technology, and detailed technology design processes Considers the advantages and limitations of different sensors Presents key applications of intelligent tires supported by case studies
Download or read book Development of a MATLAB Simulation Model for the Siemens VDO Tire Pressure Monitoring System Tire Guard based on a Function Library written by Christian Vetter and published by . This book was released on 2006 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of a Tire pavement Contact stress Model Based on Artificial Neural Networks written by Moustafa El-Gindy and published by . This book was released on 2001 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Intelligent Manufacturing and Mechatronics written by Radhiyah Abd. Aziz and published by Springer Nature. This book was released on with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book European Control Conference 1993 written by and published by European Control Association. This book was released on 1993-06-28 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the European Control Conference 1993, Groningen, Netherlands, June 28 – July 1, 1993
