Display:

Results

Viewing 181 to 210 of 21705
2015-04-14
Technical Paper
2015-01-0293
Yaamini Devi Loganathan
Abstract Indian automobile production increased at a CAGR of 12.2% over FY05-FY13, with a decline in Commercial Vehicle (CV) growth rate during FY09 and FY13. Globally, automotive industry suffered a decline in FY09 due to the global financial crisis and again on a decline in FY12 due to the European sovereign debt crisis. Apart from the global events, there are various internal risks the Indian OEMs need to consider: 1) regulatory risk due to excise duty hikes, decontrol of fuel pricing, etc., 2) market risks due to currency, inflation, interest rates, material cost, 3) industry risks due to increased competition, price war, etc. In this scenario, Indian Original Equipment Manufacturers (OEMs) need to constantly recalibrate their strategies to the changing market dynamics and associated risks. A research on megatrends affecting the Indian CV industry has identified more focus on Total Cost of Ownership (TCO) as one of the megatrend.
2015-04-14
Technical Paper
2015-01-0290
Amin Tahmasbi-Sarvestani, Hadi Kazemi, Yaser P. Fallah, Mohammad Naserian, Allan Lewis
Abstract Pedestrians account for a significant ratio of traffic fatalities; as a result, research on methods of reducing vehicle-pedestrian crashes is of importance. In this paper, we describe a system architecture that allows the use of vehicle-to-pedestrian (V2P) communication as a means of generating situational awareness and eventually predicting hazards and warning drivers and pedestrians. In contrast, vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communication for safety applications, V2P has not received much attention. One major reason for this lack of attention had been the unavailability of communication mechanisms between pedestrians and vehicles. Recent advances in enabling Wi-Fi and dedicated short range communication (DSRC) based communication using smart-phones is changing this picture. As a result, V2P communication can be considered as a possible solution.
2015-04-14
Technical Paper
2015-01-0316
Kazuto Yokoyama, Masahiro Iezawa, Yohei Akashi, Toshihide Satake, Yukiyasu Akemi, Satoru Inoue, Ryotaro Suzuki
Abstract Parking assist systems which relieve burden of drivers have been put into practice in the world. Mitsubishi Electric has also been developing several technologies to realize the system, where our products such as sonar (ultrasonic sensor), electric power steering (EPS), a motor, and an inverter are used. In the parking assist system, peripheral environment of the vehicle in a parking lot is detected with our sonar sensors and determine whether or not there is a parking space available. Estimation of the position and the attitude of the vehicle is also carried out. On the basis of the detection and the estimation, a smooth and efficient path to drive and park the vehicle is generated with an optimization technique. In particular, this paper focuses on a drive control for electrified vehicles to track the reference trajectory at a desired speed given from the assist system.
2015-04-14
Technical Paper
2015-01-0311
Reecha Yadav, Vinuchackravarthy Senthamilarasu, Krishnan Kutty, Vinay Vaidya, Sunita Ugale
Abstract In view of the continuous efforts by the automotive fraternity, for achieving traffic safety, detecting pedestrians from image/video has become an extensively researched topic in recent times. The task of detecting pedestrians in the urban traffic scene is complicated by the considerations involving pedestrian figure size, articulation, fast dynamics, background clutter, etc. A number of methods using different sensor technologies have been proposed in the past for the problem of pedestrian detection. To limit the scope, this paper reviews the techniques involved in day-time detection of pedestrians, with emphasis on the methods making use of a monocular visible-spectrum sensor. The paper achieves its objective by discussing the basic framework involved in detecting a pedestrian, while elaborating the requisites and the existing methodologies for implementing each stage of the basic framework.
2015-04-14
Technical Paper
2015-01-0134
Durga Madhab Mishra, Bimal Kant Gupta
Abstract The Two wheeler motorcycles electrical system consists of a generator, a storage battery, voltage control protective devices and the electrical loads. Battery, in motorcycles, supports the starting, lighting and ignition system. Generally, in a vehicle, headlight or any other electrical apparatus consumes significant amount of current from the battery causing drain of the battery when the vehicle is not running and one of the light or electrical apparatus inadvertently remains on for some time. The present invention relates to vehicle light system and, more particularly, to a light control system of a vehicle. This discloses a concept which, automatically turned off vehicle lighting system when engine is OFF. Present invention named as “Intelligent lighting system” which helps in avoiding drainage of battery in case, when rider switches ON the ignition switch (H/L already ON) & engine OFF.
2015-04-14
Technical Paper
2015-01-0151
Sergey P. Gladyshev, Irina Okrainskaya, Pavel Gladyshev
Abstract The purpose of this paper is to investigate opportunity to create a new type AC induction motor with the salient pole rotor (without winding) and both winding AC excitation and short circuited placed on the stator. There are some advantages in this design: The suggested design has a cold rotor. The stator short circuited and excitation windings are easier for cooling. The rotor has reduced weight in compare with regular induction motor rotor. The short circuit winding can be used for the current control like in the regular induction wound-rotor machines. In this case, the problem maintenance of the slip rings is eliminated. In this paper, we discuss theoretical opportunity for realization the induction mode operation in two and three phase machines. As a base for this, it serves the analyses operation of one phase machine. This analysis is fulfilled in comparison with regular induction motors with short circuited and wound-rotor windings.
2015-04-14
Technical Paper
2015-01-0157
M Abu Anas Shuvom, M Zahurul Haq
Abstract As combustion can vary widely between engine cycles if left uncontrolled, strict and robust control is required to meet optimum performance at different operating conditions. In this research, intelligent control techniques implemented on a Gasoline Direct Compression Injection (GDCI/GDI) engine. A research four cylinder 2.0 L GDI engine modeled with optimal control hardware that is frequently called as the conceptual Cybernetic intelligent GDI or ‘iGDI’ engine. The engine features Free Valve Actuation (FVA) hardware and precision fuel injector connected directly to the engine cylinder that found assistive for control flexibility by technical assessments. Then a mechatronic neural control approach is proposed and discussed with adaptive control techniques. Adaptive and predictive neural network control architectures developed for two distinct plant operation modes.
2015-04-14
Technical Paper
2015-01-0166
Christian Drabek, Annette Paulic, Gereon Weiss
Abstract Car infotainment systems feature an increasing number of functions to keep pace with consumer needs. The GENIVI Alliance aims to facilitate this evolution of infotainment systems by developing a common baseline where services of different suppliers can easily be integrated on a single hardware platform. Since the huge number of services creates more dependencies and interactions, more effort is required to ensure the same level of quality. We present a novel approach and effective tooling to reduce the effort for the interface verification of in-vehicle software components. Our models create different views of the system. Consistency checks and automated transformations between the views reduce the modeling effort and ensure compatible interactions of distributed software components. Layered reference models separate the description of the structure and the behavior of the services' communication.
2015-04-14
Technical Paper
2015-01-0176
Karsten Schmidt, Denny Marx, Jens Harnisch, Albrecht Mayer, Udo Dannebaum, Herbert Christlbauer
Abstract In recent years, we see more and more ECUs integrating a huge number of application software components. This process mostly results from the increasing amount of so called in-house software in various fields like electric-drive, chassis and driver assistance systems. The software development for these systems is partially moved from the supplier to the car manufacturers. Another important trend is the introduction of new network architectures intending to meet the growing communication requirements. For such ECUs the software integration scenarios become more complicated, as more quality of service requirements with regards to timing, safety and security need to be considered [2]. Multi-core microcontrollers offer even more potential variants for integration scenarios. Understanding the interaction between the different software components, not only from a functional, but also from a timing view, is a key success factor for modern electronic systems [6,7,8,9].
2015-04-14
Technical Paper
2015-01-0172
Won Kyung Ham, Sangchul Park, JiMyoung Park, Minsuk Ko, Min-Ho Yoo
Abstract Presented in this research is methodology for modeling the behavior of an automotive ECU (Electronic Control Unit) to verify in a production system. The methodology of this paper is to verify the defects of ECU products during in a real operation, before the defective ECU equipped to an automobile. The performance of an ECU operation is dependent on not only the specification of a hardware device, but also a software program installed in the memory of an ECU. The software program of an ECU is able to be validated before installation, but the validation process is usually executed in a very controllable environment. In order to consider the software program which is frequently changeable in practice, the verification methodology of ECU products as the hardware device and software program integrated is required for detecting defective ECU products caused by inappropriate software program during in manufacturing processes.
2015-04-14
Technical Paper
2015-01-0292
Pascal Herve
Abstract Transportation systems use wireless technology to link vehicles and mobile devices to each other, and to the transportation infrastructure. This paper presents an advanced approach supporting and establishing a future testing and certification framework for vehicles and applications that can leverage wireless communications for the transportation environment. Assessing such integrated communication systems performance will realize the full potential of connected vehicles, travelers and infrastructure. To reach this potential, connected vehicle equipment and applications must meet minimum performance requirements, conform to common technical standards, and interoperate with one another. Over-The-Air Testing and Certification method provides formal means of verifying that a vehicle integrating specific communication technology fulfills the End-User's expectations and complies with Standards and Regulations.
2015-04-14
Technical Paper
2015-01-0590
Dae-Un Sung, Young Hyun Ryu, Soon Cheol Park
Recently, many kinds of new technology systems are adapted to a new developing vehicle. However the field usage information of a new technology system could not be easily obtained because it has not been used by customers. It is not easy to evaluate the reliability and durability of this system. In this research, the durability test mode of a new Adaptive Front Lighting System (AFLS) with Light Emitting Diodes (LEDs) as a new light source has been developed for a new large luxury sedan vehicle. First of all, the failure mode effect was analyzed by considering failure mechanism for each component. The thermal, vibrational, operational and electrical loads were investigated. The Road Load Data Acquisition (RLDA) technique was used to collect the vibration and temperature of an AFLS in a proving ground. The vibration test mode was designed by a Power Spectral Density (PSD) approach. The customer usage data was used for making the target cycles of operational movement such as swiveling.
2015-04-14
Technical Paper
2015-01-0596
Oliver Scholz, Nikolas Doerfler, Lars Seifert, Uwe Zöller
Abstract Polymer seals are used throughout the automobile for a variety of purposes, and the consequences of a failure of such a seal can range from annoying in case of an A/C component to catastrophic in the case of brake components. With the constantly increasing demands for these components regarding e.g. pressure, tighter tolerances or new refrigerants come more stringent requirements for ensuring surface properties according to the specification for the specific application. While automatic inspection systems are available for a variety of defects, the area of seal inspection is still dominated by manual labor, partly because handling of these small, inexpensive parts is difficult and partly because visual coverage of the entire sealing surface poses a problem. It is also difficult for a human inspector to objectively assess whether or not a surface defect is critical, especially given that inspection of each seal must be completed within a few seconds.
2015-04-14
Technical Paper
2015-01-0185
Younho Lee, YangNam Lim, KokCheng Gui, Jin Seo Park, Pawan Reddy, Syed Arshad Kazmi
Abstract These days in automotive industry, AUTOSAR has been increasingly used as a standard and unified software platform as vehicle electronics have becoming more variety, more performance and more complicated. MCAL is a software driver which belongs to lowest level in AUTOSAR software structure. MCAL directly access the microcontroller hardware and is provided by microcontroller supplier like Infineon to handle microcontroller peripherals. And in cases for special dedicated functions of microcontroller or for special requirements, Complex Device Driver could be used as legacy software instead of MCAL. The paper is structured as follows: First, the SPI requirements for vehicle applications such as chassis will be shown. Then, the current AUTOSAR specification for SPI MCAL will be explained in detail. Next, the sequential SPI communication and the parallel SPI communication with multi-nodes will be discussed.
2015-04-14
Technical Paper
2015-01-0588
Julian Mauricio Echeverry, Virgilio Vasquez, Jorge Aguirre, Diego Contreras
Abstract This document presents a methodology for obtaining the vehicle performance curves and values by means of the OBD2 port for a specific vehicle. In particular the Torque - Power engine curves and acceleration performance following SAE guidelines. Additionally we obtain the wheel dynamic rolling radius to get a more realistic performance. The results obtained are compared to a chassis dynamometer test performed on the same vehicle to prove feasibility for a low cost implementation when there is no access to said testing tools.
2015-04-14
Technical Paper
2015-01-1108
Hongqing Chu, Yong Chen, Lishu Guo, Bingzhao Gao, Hong Chen
Abstract In order to improve the drivability and reduce the clutch friction loss, low-cost slope sensor is used in hill-start control of AMT vehicles. After the power spectrum analysis of the original signal and the design of the digital filter, the angle of the slope is obtained with short enough delay and small enough noise. By using this slope angle information, slope resistance force can be calculated online so that the vehicle can be prevented from sliding backward and optimal launch control can be realized. The digital filter of slope angle signal and the optimal controller of dry clutch engagement are embedded in the TCU (Transmission Control Unit) of a micro-car Geely Panda. Real-vehicle experiments are carried out with optimal clutch controller, which shows that the hill-start with low-cost slope sensor and optimal clutch controller can provide successful vehicle launch with little driveline shock.
2015-04-14
Journal Article
2015-01-1408
Kristofer D. Kusano, Hampton C. Gabler
Abstract Intersection crashes are a frequent and dangerous crash mode in the U.S. Emerging Intersection Advanced Driver Assistance Systems (I-ADAS) aim to assist the driver to mitigate the consequences of vehicle-to-vehicle crashes at intersections. In support of the design and evaluation of such intersection assistance systems, characterization of the road, environment, and drivers associated with intersection crashes is necessary. The objective of this study was to characterize intersection crashes using nationally representative crash databases that contained all severity, serious injury, and fatal crashes. This study utilized four national crash databases: the National Automotive Sampling System, General Estimates System (NASS/GES); the NASS Crashworthiness Data System (CDS); and the Fatality Analysis Reporting System (EARS) and the National Motor Vehicle Crash Causation Survey (NMVCCS).
2015-04-14
Technical Paper
2015-01-1412
Xuan Zhou, Walter Niewoehner
Abstract The safe handling of complex and dense traffic situations is a basic pillar of road safety. Advanced driver assistance systems (ADAS) make a decisive contribution to that. Although the computing power of modern ADAS is fast growing, a simplification of the algorithms used can further improve the reliability and effectiveness of such systems. The permanent calculation of the time to collision (TTC) with objects moving on a non defined motion path requires a high computing power. The paper will explain a new algorithm-based approach to make future ADAS faster with simultaneously increasing the reliability.
2015-04-14
Technical Paper
2015-01-1634
Toru Ishino, Shinichi Takai
Abstract When selecting a transmission gear, it has been standard to shift by operating a lever-type gear selector, but with advances in transmission technology and vehicle control, there is currently demand for technical progress in the operating method of the gear selector, and a good balance between intuitive operation by users and prevention of accidental operation is required. The authors have developed a push button-type electrically controlled gear selector that makes shifting easy to master and enables intuitive operation. A push button-type shifter should essentially be suitable for intuitive operation, but difficulty in distinguishing between selections has been an issue. However, we posited that distinguishing gear position selections by differentiating button operation direction as well as button positioning and shape could be implemented effectively.
2015-04-14
Technical Paper
2015-01-0229
Zhongwen Zhu, Xu Wang, Wei Huang, Jinfeng Gong
Abstract Pure electric vehicles are recognized as one of the most important new energy vehicle types to meet the increasingly stringent standards in energy saving and environment protection. To meet the control demands, China Automotive Technology & Research Center(CATARC) plan to develop an advanced Vehicle Control Platform(VCP) for pure electric vehicles. The developed VCP is well structured on both hardware and software and can be adapted to different pure electric vehicles easily. This paper describes the design of the hardware, the software architecture, the base software and the control strategy applied in the VCP in detail. A matching method is proposed to configure the VCP to a real VCU for the specific application by modifying the hardware channel definition and the control parameters. The paper shows successful application of the VCP on several types of pure electric vehicles.
2015-04-14
Technical Paper
2015-01-1202
Weimin Zhang, Saeed Anwar, Daniel J. Costinett, Fred Wang
Abstract A cost-effective SiC based hybrid switch and an improved inductor design procedure for boost converter in electric vehicles (EVs) and hybrid electric vehicles (HEVs) are presented in this paper. The feasibility of a hybrid switch using low power SiC MOSFET and high power Si IGBT is investigated to provide a cost-effective and failure-resistant method to employ the fast switching characteristics of SiC devices. The operation of the hybrid switch is tested in double pulse test experiment and compared with the single IGBT. Additionally, the boost inductor design is discussed, which allows the optimization of weight and power loss across different core materials. An improved powder core inductor design procedure is presented to avoid the iterative design procedure provided by the manufacture. Both the powder material and nanocrystalline material are considered in the inductor design procedure.
2015-04-14
Technical Paper
2015-01-1203
Subhashree Rajagopal, Sebastien Desharnais, Balamurugan Rathinam, Upendra Naithani
Abstract Electromagnetic brakes are found in a variety of applications. They offer tremendous advantages including: absence of fading, high braking torque and controllability. However they suffer from decreasing torque at low and high speeds. In this study, a novel concept of permanent magnet eddy-current brake is proposed that maintains a flat braking torque profile over a broad speed range. The principle is analytically investigated and numerically validated through finite element simulations using MAXWELL. It is demonstrated that a usably flat braking torque profile can be achieved by altering the path of eddy-currents by magnetic field orientation, thereby affecting the apparent rotor resistance.
2015-04-14
Technical Paper
2015-01-0207
Xiping Ma, Zhenchun Xia, Haotian Wu, Xianan Huang
Abstract Powertrain diagnosis has been demanded with growth & complexity of powertrain electronic control system and enforcement of law & regulation in the last decades. In regulation OBD II, requirement of misfire monitoring has been demanded much more strictly. A variety of diagnosis methods for misfire have been proposed and developed, however most of them either depend greatly on special or expensive sensors or suffer from the disturbance of vibration due to non-misfire reasons. One combination of Frequency Domain Analysis and Fuzzy Logic to perform the misfire diagnosis is proposed. It takes full advantage of property of frequency domain analysis and fuzzy logic, providing accurate and robust detection results, without adding additional hardware diagnosis instruments.
2015-04-14
Collection
This technical paper collection concentrates on the development and implementation of embedded software architectures that reside in production vehicle electronic modules. Topics include implementation on multi-core processors, parallel computing environments, multi-processor and multi-ECU systems, and the deployment of AUTOSAR. Expert speakers from the embedded software community are encouraged to share their experiences and opinions.
2015-04-14
Technical Paper
2015-01-0135
Thomas Heurung
Abstract Consumer demand for electronics has now placed the automotive industry under pressure to drive innovation in cars much in the same way we have see innovation in the mobile device industry. There is now an expectation for automobile OEMs to deliver more innovation to market faster - with no increase in cost. This trend is driving up EE content in vehicles, requiring a reduction in design cycle time without passing the cost increases to the consumer. Intrinsic to EE content is the fact that it's impossible to compartmentalize design domains because they are connected in so many different ways. The traditional parallel flows to design software, electronics, networks, and the physical shape of the vehicle are mostly independent of each other and are not suited to deal with interdependency. Unfortunately, this often leads to lengthy design cycles, many iterations, and suboptimal designs.
2015-04-14
Technical Paper
2015-01-0131
Nick Smith
Abstract Demand for increased functionality in automotive electrical/electronic (E/E) systems is being propelled by both customers and various governmental regulations and requirements. This demand for more capabilities also introduces new challenges for OEMs who are responsible for implementing these functions. Of course, the cost of system development and manufacturing are considerable, but there are challenges beyond cost that the OEM must deal with, such as increased weight, reliability and quality concerns, exponentially-increasing complexity, and the government requirements. From the point of view of the electrical system platform as a whole, it provides the unique role of integrating all the individual E/E systems. When integrated, unanticipated problems can emerge that require design modifications. Often, these are discovered way down the design path, which results in delays in the program that can lead to missed deadlines and costly rework.
2015-04-14
Technical Paper
2015-01-0145
Reinhold Blank
Abstract The electrical and electronic system in vehicles with all its components has become more and more complex. Many different stakeholders are involved and more and more parts of the development process have been shifted to the suppliers. This outsourcing results in substantial savings on the OEM side, but brings additional challenges to manage the overall system and keep the core IP within the OEM. This presentation shows an approach that was adopted recently by several OEMs. It is called the “E/E-Architecture” process and applies the principles of system engineering according ISO/IEC15288. It shows the starting point by managing the requirements and how to use functions as the source of the truth over the entire design process. During the E/E Architecture phase, it is important to concentrate on the strategic design aspects.
2015-04-14
Technical Paper
2015-01-0214
Ramya Deshpande, Krishnan Kutty, Shanmugaraj Mani
In modern cars, the Advanced Driver Assistance Systems (ADAS) is cardinal point for safety and regulation. The proposed method detects visual saliency region in a given image. Multiple ADAS systems require number of sensors and multicore processors for fast processing of data in real time, which leads to the increase in cost. In order to balance the cost and safety, the system should process only required information and ignore the rest. Human visual system perceives only important content in a scene while leaving rest of portions unprocessed. The proposed method aims to model this behavior of human visual system in computer vision/image processing applications for eliminating non salient objects from an image. A region is said to be salient, if its appearance is unique. In our method, the saliency in still images is computed by local color contrast difference between the regions in Lab space.
2015-04-14
Technical Paper
2015-01-0244
Adrien Laurino
Abstract For tubular terminals and high power junctions, the magnetic pulse crimping (MPC) could be a technical solution to produce aluminum - copper assembly. LEONI has launched a study to evaluate this technology. Besides, the lifetime of vehicle components is an issue that manufacturers should consider during all the development phases from the conception to the validation in service. Consequently, the quality of the interface aluminum-copper obtained by MPC is evaluated in terms of microstructure, of electrical and mechanical properties and to describe the corrosion behavior.
2015-04-14
Technical Paper
2015-01-0239
Markus Ernst, Markus Heuermann
Abstract Due to the development towards automated or even autonomous driving, an increasing number of assistance systems and inherent networks of data and power will be required in vehicles. The main challenge for this development is the coordination of these functions and the securing of functionalities in terms of failure. Living organisms are capable of efficiently coordinating a large number of paths to transmit information and energy. They dispose of tested mechanisms as well as structures which offer certain robustness and fault tolerance. Prudent redundancy in energy supply, communication and safeguarding of function ensures that the system as a whole remains capable of operating even when there are disruptions. Vehicles, which are being fitted with ever more assistance systems, must perform comparably. The transformation of these structures and functional principles from nature into technical solutions is combined within the keyword ‘bionic’.
Viewing 181 to 210 of 21705

Filter