Display:

Results

Viewing 1 to 30 of 835
Technical Paper
2014-09-30
Quon Kwan, Leverson Boodlal
In this particular field operations test study, the authors demonstrated that telematics can be used to monitor and improve safe and fuel-efficient driving behavior in trucks. Telematics was used to monitor various driver performance parameters: unsafe events (sudden accelerations and hard braking expressed as Yellow and Red events, depending on severity), vehicle speed, engine speed in revolutions per minute (RPM), and fuel economy (miles per gallon). The drivers consisted of two groups: drivers of day cabs and drivers of sleeper cabs. The drivers of both groups were monitored during a baseline period during which no feedback, coaching, or rewards were provided. Then, the drivers of both groups were monitored during an intervention period, consisting of five stages, during which drivers were provided with feedback, coaching, and rewards. As the result of monitoring unsafe events and of driver intervention, drivers of sleeper cabs showed a 55% reduction from the baseline in less severe (Yellow) unsafe events and a 60% reduction from the baseline in more severe (Red) unsafe events.
Technical Paper
2014-09-16
Nicholas Ernest, Kelly Cohen, Corey Schumacher, David Casbeer
Next gen UCAVs will require flying at supersonic speeds and the utilization of precise defensive systems, resulting in unreasonable bandwidths and near zero latencies making them unfeasible to be tele-operated as the current CONOPS dictates. Looking forward to increased levels of autonomy in Unmanned Combat Aerial Vehicle (UCAV) operations it becomes apparent that the mission, flight, and ground controls will utilize the emerging paradigm of Intelligent Systems (IS); namely, the ability to learn, adapt, exhibit robustness in uncertain situations, “make sense” of the data collected in real-time and extrapolate when faced with scenarios significantly different from those used in training. LETHA, the Learning Enhanced Tactical Handling Algorithm, was created to develop intelligent managers for these advanced unmanned craft through the novel means of a genetic cascading fuzzy system. In this approach, a genetic algorithm creates rule bases and optimizes membership functions for multiple fuzzy logic systems, whose inputs and outputs feed into one another alongside other crisp data.
Technical Paper
2014-09-16
Prashant Vadgaonkar
Today's digital avionics systems leverages the maximum use of the Embedded COTS to fit the need of small form factor, low power, reduce time to market, reducing development time and efficient use of DO-254 for compliance of product. Without the use of Embedded COTS Hardware the time to market is more, compliance efforts are high and complexity of the design increases dramatically. COTs are very useful for Development Assurance Level C and below, new trend is to use it for Level A and B as well, where we can get enormous benefit on efforts on compliance and time to market. COTS modules are entering in digital avionics systems as COM (Computer On Module)/SOM (System On Module)/SIP (System In Package) with huge advancement in semiconductor and packaging industry. Digital systems like cockpit (Drive for Digital Cockpit), Air data management and Fuel Quantity Gauging and Indicating Systems etc. leveraging the COTS for their redesigns, to invent/evolve new products in digital avionics segment.
Standard
2014-07-29
This document defines a set of standard application layer interfaces called JAUS Unmanned Ground Vehicle Services. JAUS Services provide the means for software entities in an unmanned system or system of unmanned systems to communicate and coordinate their activities. The Unmanned Ground Vehicle Services represent the platform-specific capabilities commonly found in UGVs, and augment the Mobilty Service Set [AS6009] which is platform-agnostic. At present ten (10) services are defined in this document.
WIP Standard
2014-07-18
The SAE Aerospace Information Report AIR5315 – Generic Open Architecture (GOA) defines “a framework to identify interface classes for applying open systems to the design of a specific hardware/software system.” [sae] JAUS Service (Interface) Definition Language defines an XML schema for the interface definition of services at the Class 4L, or Application Layer, and Class 3L, or System Services Layer, of the Generic Open Architecture stack (See Figure 1 below). The specification of JAUS services shall be defined according to the JAUS Service (Interface) Definition Language document.
Magazine
2014-07-10
Off-highway engines advance beyond Tier 4 With Tier 4 Final/Stage IV needs met, engine OEMs direct their focus and competitive energies toward optimizing competitive solutions. At the same time, they need to keep a weather eye out for future regulations, which many expect. Autonomous vehicle challenges span many fields Many of the challenges faced by military and commercial design teams are similar. Racket busters With a quiet cab at the top of many tractor buyers' wish lists, agricultural equipment manufacturers are pursuing every opportunity possible to shed decibels.
WIP Standard
2014-07-01
The federal government and industry have moved to concurrent acquisition and development processes using integrated process teams (IPTs). These processes are supported by timely, accurate, cross functional access to data within an integrated data environment (IDE) enabled by advances in information technology (IT). Since the advent of acquisition reform in 1994, Data Management (DM) practices have evolved from being directed by a prescriptive set of standards and procedures to use of the guidance in a principles-based standard -- ANSI/EIA 859.

GEIA Handbook 859 provides implementation guidance for ANSI/EIA 859, with discussions of applications of the standard's principles, tools, examples, and case studies. Handbook 859 is organized according to the lifecycle of data management and covers activities from the pre-RFP stage through records disposition. It also provides annexes on topics which apply at multiple stages in the lifecycle, such as protection of data, continuous improvement and knowledge management.

Standard
2014-06-03
This document defines a set of standard application layer interfaces called JAUS Manipulator Services. JAUS Services provide the means for software entities in an unmanned system or system of unmanned systems to communicate and coordinate their activities. The Manipulator Services represent platform-independent capabilities commonly found across domains and types of unmanned systems. At present, twenty-five (25) services are defined in this document.
Technical Paper
2014-05-09
Nikolina Samardzic
Values of the speech intelligibility index (SII) were found to be different for the same speech intelligibility performance measured in an acoustic perception jury test with 35 human subjects and different background noise spectra. Using a novel method for in-vehicle speech intelligibility evaluation, the human subjects were tested using the hearing-in-noise-test (HINT) in a simulated driving environment. A variety of driving and listening conditions were used to obtain 50% speech intelligibility score at the sentence Speech Reception Threshold (sSRT). In previous studies, the band importance function for ‘average speech’ was used for SII calculations since the band importance function for the HINT is unavailable in the SII ANSI S3.5-1997 standard. In this study, the HINT jury test measurements from a variety of background noise spectra and listening configurations of talker and listener are used in an effort to obtain a band importance function for the HINT, to potentially correlate the calculated SII scores with the measured speech intelligibility scores.
WIP Standard
2014-04-23
Generate an accompanying document to AS-6129 to define the verification method and criteria for all the requirements contained in AS-6129.
WIP Standard
2014-04-22
This SAE Aerospace Standard (AS) defines the editorial format and policies necessary for the publication of platform/subsystem Interface Control documents. The Common Interface Control Document Format Standard defines a common format for platform to subsystem interface documents to facilitate subsystem integration. This aerospace standard specifies the common technical data sections for the Common Interface Control Document Format down to the third header level for the majority of sub-sections. The Common Interface Control Document Format Aerospace Standard provides a structured document format in appendixes supported by example paragraphs, drawings, etc.
WIP Standard
2014-04-22
This standard defines a generic set of electrical interfaces between a host aircraft (“platform”) and an electro-optic/infrared (EO/IR) sensor. This includes connectors, cabling, fiber optics, signals, and power.
Technical Paper
2014-04-01
Marco Steger, Michael Karner, Werner Rom, Daniel Watzenig
Abstract Within this work we demonstrate the implementation and evaluation of a vehicle-to-vehicle based intersection assistance system, relying only on communication between the vehicles and not requiring any communication with infrastructural components as it is the case with typical complex intersection assistance systems. It also requires no additional information like right-of-way or maps and works out-of-the-box for nearly all types of intersections. The intersection assistance system utilizes GPS, yaw rate, vehicle acceleration, speed and heading as indicators for a 3D path prediction. While the x-y layer aids in the detection of possible collisions, the z axis is used for detecting bridges and overpasses. By applying several sophisticated filter levels and algorithms, the amount of false positives can massively be reduced while the true positives can be maintained. Finally, the developed simple intersection assistance system is compared to a sophisticated intersection assistance system.
Technical Paper
2014-04-01
Edgardo X. Menendez, George White, Michael Ulrich
Abstract Vehicle to vehicle (V2V) communications is receiving a lot of attention in the automotive industry due to the many advantages it presents to the general public including, but not limited to, increased traffic efficiency and increased safety on the roads. The multilayer organic technology allows manufacturers to build several different types of passive components with high performance characteristics at RF/Microwave frequencies, including capacitors, inductors and diplexers. The performance of each component family will be discussed along with a comparison to traditional ceramic based fired components. Frequency response, mechanical performance, and specifications will be compared. MLO™ diplexer performance will be discussed relative to their use in V2V systems and their potential impact on system performance.
Technical Paper
2014-04-01
Radovan Miucic, Zeljko Popovic, Sue Bai
Abstract Precise vehicle positioning is dependent on the availability of a clear line of sight path between a vehicle and four or more satellites. For improved estimation of vehicle positioning in the absence of a complete set of visible satellites, Dedicated Short-Range Communication (DSRC) may offer a temporary position estimate. This paper investigates the feasibility of acquiring position based solely on DSRC signals. First the precision of DSRC signal strength (SI)-based position estimates is analyzed; this is followed by an analysis of position estimates based on time of flight (TOF). SI and TOF methods are compared using an extensive set of outdoor data collected from 30 vehicles on a test track. This research suggests that TOF is a better measure than SI for estimating position information.
Technical Paper
2014-04-01
Satoru Komatsu, Yukihiro Serizawa, Akira Nagao, Ken Asami, Yoshio Karasawa
Abstract Traditionally, the suitability of wireless terminals for automotive use has been evaluated by conducting repeated driving tests in actual environments. However, this method of evaluation has long presented issues, and the implementation of the method itself is today becoming increasingly challenging. A method of evaluating the suitability of terminals for onboard use by generating virtual radio wave environments on a PC has therefore been developed by applying a two-stage method to multiple-input multiple-output (MIMO)-over-the-air(OTA) evaluation. The radio wave propagation characteristics necessary for the generation of these virtual radio wave environments are set using the multiple signal classification method incorporating an RF recorder. The research discussed in this paper used these methods to analyze the effect of the multipath distortion rate on sound quality in the reception of FM broadcasts.
Technical Paper
2014-04-01
Aswin Sreekumar, Anuradha Meena, Shiraz Shahabudeen
Abstract This paper presents an overview of the telematics domain, with specific focus on the Indian Market. Telematics service areas broadly includes V2X (vehicle-to-vehicle and vehicle-to-infrastructure) and safety communications, fleet management and monitoring, vehicle security, diagnostics, emergency and roadside assistance, automatic crash notification, service appointment scheduling, toll collection, vehicle insurance. Navigation, infotainment and in-car communications are also closely related areas. An emerging trend is that V2X telematics may be delivered using smartphones and networks such as 4G. The primary reason is cost advantage in utilizing smartphones as the platform to bring services to vehicles. Smartphone based applications and web portals can be used to enable remote access features. In fact, if Federal Communications Commission (FCC) decides to eventually share the 5.9 GHz DSRC band, telematics may in fact rely much more on standard telecommunications infrastructure.
Technical Paper
2014-04-01
Carl Bergenhem, Erik Coelingh, Rolf Johansson, Ali Tehrani
This paper presents measurements on Vehicle to Vehicle (V2V) communication between participants in a platooning application. Platooning, according to the SARTRE concept, implies several vehicles travelling together in tight formation, with a manually driven heavy lead vehicle. The platoon being studied consists of five vehicles; two trucks in the lead and three passenger cars. The V2V-communication node in each vehicle contains an 802.11p radio at 5,9 GHz. It is used to send messages between vehicles to coordinate movements and maintain safety in the platoon. Another cooperative application that relies on V2V-communication is multiple UAVs flying in formation; as investigated in KARYON. This project also investigates cooperative autonomous vehicles. In both applications, V2V-communication is an enabling technology. Two metrics are studied to quantify the V2V-communication quality: system packet error rate and consecutive packet loss. These two metrics characterize the communication quality in the different tests (speed, antenna position and two tracks).
Technical Paper
2014-04-01
Karsten Schmidt, Peter Tröger, Hans-Martin Kroll, Thomas Bünger, Florian Krueger, Christian Neuhaus
Future automotive systems will be connected with other vehicles and information systems for improved road safety, mobility and comfort. This new connectivity establishes data and command channels between the internal automotive system and arbitrary external entities. One significant issue of this paradigm shift is that formerly closed automotive systems now become open systems that can be maliciously influenced through their communication interfaces. This introduces a new class of security challenges for automotive design. It also indirectly impacts the safety mechanisms that rely on a closed-world assumption for the vehicle. We present a new security analysis approach that helps to identify and prioritize security issues in automotive architectures. The methodology incorporates a new threat classification for data flows in connected vehicle systems.
WIP Standard
2014-03-24
This document is not a standard, it is a candidate for a standard being submitted to SAE for their consideration as a comment to SAE J2735. The term SAE J2735 SE candidate is used within this document to refer to this submission. This document specifies dialogs, messages, and the data frames and data elements that make up the messages specifically for use by applications intended to utilize the 5.9 GHz Dedicated Short Range Communications for Wireless Access in Vehicular Environments (DSRC/WAVE, referenced in this document simply as “DSRC"), communications systems. Although the scope of this Standard is focused on DSRC, these dialogs, messages, data frames and data elements have been designed, to the extent possible, to be of use for applications that may be deployed in conjunction with other wireless communications technologies. This standard therefore specifies the definitive message structure and provides sufficient background information to allow readers to properly interpret the message definitions from the point of view of an application developer implementing the messages according to the DSRC Standards.
WIP Standard
2014-01-14
This SAE Standard specifies a message set, and its data frames and data elements specifically for use by applications intended to utilize the 5.9 GHz Dedicated Short Range Communications for Wireless Access in Vehicular Environments (DSRC/WAVE, referenced in this document simply as “DSRC”), communications systems. Although the scope of this Standard is focused on DSRC, this message set, and its data frames and data elements have been designed, to the extent possible, to also be of potential use for applications that may be deployed in conjunction with other wireless communications technologies. This Standard therefore specifies the definitive message structure and provides sufficient background information to allow readers to properly interpret the message definitions from the point of view of an application developer implementing the messages according to the DSRC Standards.
Standard
2014-01-03
AS5653 may be applied to Air Vehicles and Stores implementing MIL-STD-1760 Interface Standard for Aircraft/Store Electrical Interconnection System.
Book
2014-01-01
George Rzevski, Petr Skobelev
Managing Complexity is the first book that clearly defines the concept of Complexity, explains how Complexity can be measured and tuned, and describes the seven key features of Complex Systems: 1. Connectivity 2. Autonomy 3. Emergency 4. Non-equilibrium 5. Non-linearity 6. Self-organisation 7. Co-evolution The thesis of the book is that complexity of the environment in which we work and live offers new opportunities and that the best strategy for surviving and prospering under conditions of complexity is to develop adaptability to perpetually changing conditions. An effective method for designing adaptability into business processes using multi-agent technology is presented and illustrated by several extensive examples, including adaptive, real-time scheduling of taxis, see-going tankers, road transport, supply chains, railway trains, production processes and swarms of small space satellites. Additional case studies include adaptive servicing of the International Space Station; adaptive processing of design changes of large structures such as wings of the largest airliner in the world; dynamic data mining, knowledge discovery and distributed semantic processing.
Magazine
2013-12-03
New technologies for 2014 OEM and supplier engineers are all about technical innovation. In this special feature, Automotive Engineering International highlights (in no special order) some notable ones debuting on 2014 models.
Magazine
2013-12-02
Managing positioning integrity Thales has established a new reference system to comply with the most demanding RNP-AR navigation procedures. Business jets wait for the uplift A look at how the global executive jet market is fighting back after a hard few years.
Technical Paper
2013-11-27
Yaamini Devi Loganathan, Vinod Easwaran
General insurance industry has been incurring losses due to their poor underwriting standards and fake third party motor insurance claims. Motor industry accounts for one third of the non-life industry premium. The problems associated with the motor insurance industry are being assessed here with the help of indicators claims ratio, solvency ratio. The steps taken by Insurance Regulatory and Development Authority (IRDA) have been in terms of declined risk pool and increase in Third party premium. Third party premium is calculated based on the past years claim data and a differential pricing mechanism have been adopted. Though different vehicle segments have been addressed by this approach, the individual customer needs are not addressed here. The next level of differentiation should be based on user behavior and insurance companies are now looking at rate differentiation using customer behavior. Usage Based Insurance (UBI) using telematics is being adopted in many countries, to address the customer needs.
WIP Standard
2013-11-19
This SAE Aerospace Standard (AS) establishes guidelines for the use of IEEE-1394b as a data bus network in military and aerospace vehicles. It encompasses the data bus cable and its interface electronics for a system utilizing S400 over copper medium over extended lengths. This document contains extensions/restrictions to "off-the-shelf " IEEE-1394 standards, and assumes that the reader already has a working knowledge of IEEE-1394. This document does not identify specific environmental requirements (electromagnetic compatibility, temperature, vibration, etc.); such requirements will be vehicle-specific and even LRU-specific. However, the hardware requirements and examples contained herein do address many of the environmental conditions that military and aerospace vehicles may experience. One should reference the appropriate sections of MIL-STD-461E for their particular LRU, and utilize handbooks such as MIL-HDBK-454A and MIL-HDBK-5400 for guidance. This document is referred to as a "slash sheet " and accompanies the SAE Sxxxx base standard.
Magazine
2013-11-07
Tackling biodiesel's technical challenges Caterpillar researchers are working to mitigate biodiesel's negative effects on engine components and aftertreatment systems. More for less Telematic systems are offering more features and functions for lower prices. Improving actuation speed and controllability With high-speed hydraulic proportional valves, the performance of existing cam phasing systems can be improved or the actuation mechanisms can be applied directly to engine valve actuation.
WIP Standard
2013-11-05
This document establishes test plans/procedures for the AS5643/1 Slash Sheet. The AS5643/1 Slash Sheet establishes guidelines for the use of IEEE-1394b as a data bus network in military and aerospace vehicles. It encompasses the data bus cable and its interface electronics for a system utilizing S400 over copper medium over extended lengths.
WIP Standard
2013-10-22
This will provide the methods for verifying that the data interfaces between an EO/IR sensor and an aircraft meet AS6135.
Viewing 1 to 30 of 835

Filter

  • Book
    10
  • Collection
    2
  • Magazine
    76
  • Technical Paper
    590
  • Standard
    157
  • Article
    0
  • Article
    0