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2016-10-24
Event
Power electronics and electric motors are essential for improving vehicle efficiency through drivetrain electrification. Technologies that support high efficiency, high power density, and low cost motors and power modules are required for the success of vehicle electrification.
2016-10-17 ...
  • October 17-21, 2016 (8:30 a.m. - 4:30 p.m.) - Pontiac, Michigan
Training / Education Classroom Engineering Academies
Tuning the various electronic variables to ensure that a vehicle's engine performs according to its mission profile ultimately relies upon a competent calibrator. Because proper calibration is such a critical aspect of customer satisfaction, skilled calibrators are in high demand in the auto industry. This Academy is designed to provide a foundation for those interested in becoming calibration engineers. Starting with an introduction to calibration and calibration tools, this Academy covers a range of topics that will provide learners with an understanding of general calibration work flow.
2016-10-03 ...
  • October 3-4, 2016 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
Training / Education Classroom Seminars
The advent of digital computers and the availability of ever cheaper and faster micro processors have brought a tremendous amount of control system applications to the automotive industry in the last two decades. From engine and transmission systems, to virtually all chassis subsystems (brakes, suspensions, and steering), some level of computer control is present. Control systems theory is also being applied to comfort systems such as climate control and safety systems such as cruise control or collision mitigation systems.
2016-09-20
Technical Paper
2016-01-2031
Michal Sztykiel, Steven Fletcher, Patrick Norman, Stuart Galloway, Graeme Burt
There is a well-recognized need for robust simulation tools to support the design and evaluation of future More-Electric Engine and Aircraft (MEE/MEA) design concepts. Design options for these systems are increasingly complex, and normally include multiple power electronics converter topologies and machine drive units. In order to identify the most promising set of system configurations, large number of existing technology variants need to be rapidly evaluated. This paper will describe a method of MEE/MEA system design with the use of a newly developed transient modelling, simulation and testing tool aimed at accelerating the identification process of optimal components, testing novel technologies and finding key solutions at an early development stage. The developed tool is a Matlab/Simulink library consisting of functional sub-system units, which can be rapidly integrated to build complex system architectures.
2016-09-20
Technical Paper
2016-01-1990
Nisha Kondrath, Nathaniel Smith
In aerospace applications, it is important to have efficient, small, affordable, and reliable power conversion units with high power density to supply a wide range of loads. Use of wide-band gap devices, such as Silicon Carbide (SiC) and Gallium Nitride (GaN) devices, in power electronic converters is expected to reduce the device losses and needs for extensive thermal management systems in power converters, as well as facilitate high-frequency operation, thereby reducing the passive component sizes and increasing the power density. A performance comparison of state-of-the art power devices in a 10 kW full-bridge buck converter operating in continuous conduction mode (CCM) and at switching frequencies above 100 kHz will be presented in this manuscript. Power devices under consideration will include Si IGBT with Si antiparallel diodes, Si IGBT with SiC antiparallel diodes, Si MOSFETs, SiC MOSFETs, and enhancement-mode GaN transistors.
2016-09-20
Technical Paper
2016-01-1987
Mingming Yin, Serhiy Bozhko, Seang Shen Yeoh
The paper will deal with the control design for an electric generation system which for future aircrafts. The future on-board systems are expected to be more efficient, safer, simpler in servicing and easier in maintenance. As a result, many existing hydraulic and pneumatic power driven systems are being replaced by their electrical counterparts. This trend is known as a move towards the More-Electric Aircraft (MEA). As a result, a large number of new electrical loads have been introduced in order to power many primary functions including actuation, de-icing and anti-icing, cabin air-conditioning, and engine start. Therefore electric power generation systems have a key role in supporting this technological trend. The state-of-the-art generation technology typically employs a three-stage wound-field synchronous machine. Advances in modern power electronics now allow the developers to consider including other machine types within the S/G.
2016-09-20
Technical Paper
2016-01-1985
Fei Gao, Serhiy Bozhko, Patrick Wheeler
The paper will deal with the problem of establishing a desirable power sharing in multi-feed electric power system for future More-Electric Aircraft (MEA) platforms. The MEA is one of the major trends in modern aerospace engineering aiming for reduction of the overall aircraft weight, operation cost and environmental impact. Electrical systems are employed to replace existing hydraulic, pneumatic and mechanical loads. Hence the onboard installed electrical power increases significantly and this results in challenges in the design of Electrical Power Systems (EPS). One of the key paradigms for future MEA EPS architectures assumes high-voltage dc distribution with multiple sources, possibly of different physical nature, feeding the same bus(es). In our study we investigate control approaches to guarantee that the total electric load is shared between the sources in a desirable manner.
2016-09-20
Technical Paper
2016-01-1982
Michelle Bash, Steven Pekarek, Jon Zumberge
The cost and complexity of aircraft power systems often limits the ability to evaluate system performance using fully integrated aircraft hardware. As a result, evaluations are typically performed using emulators to mimic components or subsystems. As an example, aircraft generation systems are often tested using an emulator that consists of a bank of resistors that are switched to represent the power draw of one or more actuators. The limitation of this approach is that the switched resistive load falls short of representing the dynamic load characteristics of aircraft actuators or other power electronic loads, and thus the true integrated performance cannot be evaluated. In this research, consideration is given to modern emulators that use power electronics and digital controls to obtain wide bandwidth control of power, current, or voltage.
2016-09-20
Technical Paper
2016-01-1991
Syed J. Khalid
Engine bleed and power extraction are required by the aircraft to operate the various onboard subsystems which are necessary for the proper functioning of the aircraft. These extractions are parasitic for engine performance and operation. The engine companies make large investments in technology to achieve a couple of percent in engine efficiency. These gains can be quickly negated if bleed and power extraction are not judiciously managed for minimizing the amounts of extractions. Permission has been obtained from Boeing to use their public domain information on subsystem architecture to articulate the message in this paper. Help from Boeing and from Specific Range Solutions Ltd of Canada in the preparation of this paper is acknowledged. The paper will first quantify the detrimental effects of bleed and power extraction on engine performance and operation using the proven GasTurb 12 performance software. The engine modelled is similar to a modern transport aircraft turbofan.
2016-09-20
Technical Paper
2016-01-2029
Rolf Loewenherz, Francisco Gonzalez-Espin, Laura Albiol-Tendillo, Virgilio Valdivia-Guerrero, Ray Foley
The present work targets a Modelica-based holistic model and simulation approach. The targeted example considers a three phase converter which is divided into the control domain, the converter electrical and thermal domains (based on losses calculation), the heat transfer domain the electromechanical domain (motor and pump) and the fluid dynamics. In this paper, only the control, converter (electrical) and converter (thermal/losses) are described in detail, while the other domains are yet to be explored in future investigation. An averaged model is utilised for the electrical domain of the three phase converter, and a power balance method is used for linking the DC and AC sides. The thermal domain focuses in determining the converter losses by deriving the analytical equations of the space vector modulation to derive a function for the duty cycle of each converter leg.
2016-09-20
Technical Paper
2016-01-2030
Jon Zumberge, Michael Boyd, Raul Ordonez
Cost and performance requirements are driving military and commercial systems to highly integrated, optimized systems which require more sophisticated, highly complex controls. To realize benefits of those complex controls and make confident decisions, the validation of both plant and control models becomes critical. To quickly develop controls for these systems, it is beneficial to develop plant models and determine the uncertainty of those models to predict performance and stability of the control algorithms. A process of model and control algorithm validation for a dc-dc boost converter circuit based on acceptance sampling is presented here. The validation process described in this paper is based on MIL-STD 3022 with emphasis on requirements settings and the testing process. The key contribution of this paper is the process for model and control algorithm validation specifically a method for decomposing the problem into model and control algorithm validation stages.
2016-09-20
Technical Paper
2016-01-2051
Andreas Himmler, Lars Stockmann, Dominik Holler
The application of a communication infrastructure for hybrid test systems is currently a topic in the aerospace and automotive industries. The demand for such a communication infrastructure is driven by the users’ need to run tests on hybrid test systems. These consist of individual, coupled test systems, each dedicated to different, even diverse needs. In the aerospace industry, there is a growing demand for modularity. Future laboratory tests means (LTM) must be scalable and exchangeable for maximum flexibility. Due to their very nature, hybrid test systems are used as integration test systems for large portions of the electronics of an aircraft (e.g., avionics, cabin) or even the complete aircraft electronics. Thus, these integration test systems need to handle high numbers of I/O channels and bus data. In order to make such test systems manageable and to enable a flexible use (e.g., to use only parts of such a system for dedicated tasks), using modular test systems makes sense.
2016-09-20
Technical Paper
2016-01-2042
Chad N. Miller, Michael Boyd
This paper introduces a method for conducting experimental hardware in the-loop (xHIL) in which an advanced power emulator (APE) is used to emulate an electrical load on an electrical power system (EPS). The emulator, in this case, is commanded using an advanced real-time target which can leverage CPUs and field programmable gate arrays (FPGA) to meet strict real-time execution requirements. The paper will be broken into three challenge problems (1) develop a solution to target behavioral level models to an advanced computational device (2) develop a high-bandwidth power emulation capability and (3) integrate these two solutions into an xHIL experiment. Challenge (1) will be addressed by targeting a behavioral level model of a brushless DC motor drive with a pulsedwidth modulated inverter to a real-time system. The results of the real-time model will be compared to that of a non-real-time gold standard.
2016-09-20
Technical Paper
2016-01-1986
Qian Li, Balakrishnan Devarajan, Xuning Zhang, Rolando Burgos, Dushan Boroyevich, Pradeep Raj
The More Electric Aircraft (MEA) concept has continued evolving with the development of new electrical power conversion technology. As such, one of the main building blocks in advanced aircraft power systems are multi-converter power electronics systems that have demonstrated significant advantages in terms of reliability, efficiency and weight reduction. These power conversion units must provide energy under challenging mission profiles, which includes feeding pulsed power loads. The latter have been increasingly adopted—especially in military applications—demanding high peak power from these systems. Due to the nonlinear characteristic of a pulsed power load, when the load is on it consumes large amounts of power in a short period of time, which is subsequently followed by periods of low power consumption.
2016-09-20
Technical Paper
2016-01-2023
Timothy Deppen, Brian Raczkowski, Marco Amrhein, Jason Wells, Eric Walters, Mark Bodie, Soumya Patnaik
Future aircraft systems are projected to have order of magnitude greater power and thermal demands, along with tighter constraints on the performance of the power and thermal management subsystems. This trend has led to the need for a fully integrated design process where power and thermal systems, and their interactions, are considered simultaneously. To support this new design paradigm, the power quality analysis framework, developed previously, has been augmented to include thermal specifications. MIL-STD-2218 defines thermal design and cooling analysis requirements for airborne electrical equipment, while MIL-STD-704 defines transient, steady-state, and frequency-domain metrics for power quality. The proposed framework augments the power quality analysis framework developed for MIL-STD-704 and others, with a mathematical interpretation of the requirements given in MIL-STD-2218.
2016-09-20
Technical Paper
2016-01-2064
Shashank Krishnamurthy, Stephen Savulak, Yang Wang
The emergence of wide band gap devices has pushed the boundaries of power converter operations and high power density applications. It is desirable to operate a power inverter at high switching frequencies to reduce passive filter weight and at high temperature to reduce the cooling system requirement. The paper describes the design and test of a power electronic converter that converts a fixed input DC voltage to a variable voltage variable frequency three phase output. The component selection and design were constrained such that the converter can operate at and ambient temperature of 170C. The design of the key functional components such as the gate drive, power module, controller and communication will be discussed in the paper. Test results for the converter at high temperature will also be presented.
2016-09-14
Technical Paper
2016-01-1878
Yuxiang Feng, Pejman Iravani PhD, Chris Brace
The autonomous control strategy of an off-road All-Terrain Vehicle was developed on Robot Operating System (ROS). Both the position estimation and autonomous control were performed on ROS. The quad vehicle is front wheel steered with rear wheel driving, and possesses Ackermann geometry. It was powered by a brushless 36V DC motor. It can be wirelessly controlled through a TP-LINK router. The vehicle only sends out sensory measurements and receives control commands, and all computations are performed on external devices. For the position estimation phase, sensory data from GPS, IMU and wheel odometry were acquired and processed on the platform. In accordance with the ROS architecture, separate packages were developed for each sensor. Afterwards, Extended Kalman filter was performed to fuse these sensory measurements to achieve an optimizing accuracy. Necessary conversion and normalization were also conducted prior to data fusion, such as conversion from LLA to ENU for GPS measurements.
2016-08-22 ...
  • August 22-26, 2016 (3 Sessions) - Live Online
Training / Education Online Web Seminars
Connected vehicles are increasingly seen as a target for cybersecurity attacks. A key differentiator for the automotive industry is the use of cyber-physical systems, where a successful cybersecurity attack can affect physical entities. Often involving embedded electronics and real time control, these systems require different solutions in addition to established IT security principles and reactive responses to threats. Cybersecurity needs to be designed and built into cyber-physical systems throughout the development lifecycle to provide defense in depth.
2016-07-07
Magazine
Technology report Quest for 'new-car smell' dictates interior-materials changes Doing it again-this time with 10 After a successful decade-long collaboration on 6-speed transaxles, Ford and GM partner again on an all-new 10-speed automatic. Here's a look inside the gearbox and the project. Large-scale additive manufacturing for rapid vehicle prototyping A case study from Oak Ridge National Laboratory bridges the 'powertrain-in-the-loop' development process with vehicle systems implementation using big area additive manufacturing (BAAM). Global Vehicles Steel-intensive Mazda CX-9 sheds mass, debuts novel turbo setup
2016-07-01
Book
Eric Walter, Richard Walter
Modern vehicles have electronic control units (ECUs) to control various subsystems such as the engine, brakes, steering, air conditioning, and infotainment. These ECUs (or simply ‘controllers’) are networked together to share information, and output directly measured and calculated data to each other. This in-vehicle network is a data goldmine for improved maintenance, measuring vehicle performance and its subsystems, fleet management, warranty and legal issues, reliability, durability, and accident reconstruction. The focus of Data Acquisition from HD Vehicles Using J1939 CAN Bus is to guide the reader on how to acquire and correctly interpret data from the in-vehicle network of heavy-duty (HD) vehicles. The reader will learn how to convert messages to scaled engineering parameters, and how to determine the available parameters on HD vehicles, along with their accuracy and update rate. Written by two specialists in this field, Richard (Rick) P. Walter and Eric P.
2016-06-29
Video
As new vehicles become more connected to the internet, to other cars, and to the road infrastructure, the number of potential intrusion points for hackers is growing fast. In this episode of SAE Eye on Engineering, Editor-in-Chief Lindsay Brooke looks at new vehicle cybersecurity products. SAE Eye on Engineering also airs Monday mornings on WJR 760 AM Detroit's Paul W. Smith Show. Access archived episodes of SAE Eye on Engineering.
2016-06-16
Standard
EQB3
The Electronic Industries Association (EIA) G-47 Effectiveness QuantificationCommittee has a basic task to quantify system effectiveness. Since the support parameters underly any prime parameter quantification, the topic of support system analysis is a fundamental one to this basic committee task. The charts contained in this bulletin were developed and used for presentations to aircraft support engineering groups, to comunicate the logic and scope of system analysis applied to support system optimization.
2016-06-09
Standard
AS20708/1B
Scope is unavailable.
2016-06-09
Standard
AS20708/2B
Scope is unavailable.
2016-06-09
Standard
AS20708/14B
Scope is unavailable.
2016-06-09
Standard
AS20708/3B
Scope is unavailable.
2016-06-09
Standard
AS20708/4B
Scope is unavailable.
2016-06-09
Standard
AS20708/5B
Scope is unavailable.
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