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Real Time Simulated Test Platform for Electric Power Line Replaceable Unit Closed Loop Testing

Honeywell Technology Solutins Lab., Pvt.-Davendar Kashireddy, Kumar Sakinala
  • Technical Paper
  • 2020-01-0018
To be published on 2020-03-10 by SAE International in United States
Aerospace application Line Replaceable Unit (LRU) development is tedious process involving hardware development and software development. Detail testing to be performed as per design assurance level (DAL) level of the system in which the LRU used. LRU design and developed for control application of a system to be tested on the real plant/system. Early system requirements validation during development stage using real plant / system involves high risk causing damage to system impacts high lead time to fix the system or most of time system itself is not built yet or system not available at the location of LRU design and development for system functional testing. However real-time simulation environment can address these limitations of system testing. Real time simulation environment is one platform extensively used for control system validation during initial stage of LRU design and development by simulating plant model / system. Correctness of the control algorithm, software implementation, hardware design can be checked during design and development stage which reduces the errors later during system integration lab (SIL) test. Any real-time simulation…
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Investigation of The Effect of Enhanced In-Cylinder Flow on HCCI Combustion in a Rapid Compression and Expansion Machine

Chiba University-Yiwen Zhong, Kazuya Ogawa, Tatsuya Kuboyama, Yasuo Moriyoshi
SUZUKI MOTOR CORPORATION-Kei Yoshimura
  • Technical Paper
  • 2019-32-0528
To be published on 2020-01-24 by Society of Automotive Engineers of Japan in Japan
The purpose of this paper is to find a way to extend the high load limit of homogeneous charge compression ignition (HCCI) combustion. A newly developed rapid compression and expansion machine (RCEM) was employed to reproduce the typical HCCI high load condition. The in-cylinder turbulence was created by the special piston which equipped with a flow guide plate. Meanwhile, the ambient temperature distribution in the cylinder was determined by the wall temperature controlling system which was controlled by the independent coolant passages. In addition, the numerical simulation by using large eddy method coupled with a detailed chemical reaction was conducted as well. The results show that HCCI mode is potential to be improved at high load condition in full consideration of in-cylinder temperature, flow, and turbulence.
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Mathematical Model of Heat-Controlled Accumulator (HCA) for Microgravity Conditions

National Aerospace University Kharkov Aviation Institute, Ukraine-Gennadiy Olexandrovich Gorbenko, Polina Sergeevna Koval, Konstantin Sergeevich Yepifanov, Pavlo Grigorovich Gakal, Rustem Yusufovich Turna
  • Journal Article
  • 01-13-01-0001
Published 2020-01-09 by SAE International in United States
It is reasonable to use a two-phase heat transfer loop (TPL) in a thermal control system (TCS) of spacecraft with large heat dissipation. One of the key elements of TPL is a heat-controlled accumulator (HCA). The HCA represents a volume which is filled with vapor and liquid of a single working fluid without bellows. The pressure in a HCA is controlled by the heater. The heat and mass transfer processes in the HCA can proceed with a significant nonequilibrium. This has implications on the regulation of TPL. This article presents a mathematical model of nonequilibrium heat and mass transfer processes in an HCA for microgravity conditions. The model uses the equations of mass and energy conservation separately for the vapor and liquid phases. Interfacial heat and mass transfer is also taken into account. It proposes to use the convective component k for the level of nonequilibrium evaluation. The experiments were carried out in microgravity conditions for the estimation of the k value. The heating of the HCA was investigated in the flight experiments. The working…
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Vehicle Control History: Data from Driver Input and Pre-Collision System Activation Events on Toyota Vehicles

Toyota Motor North America-Lance Lewis
Toyota Motor North America, Inc.-Barry Hare, Harold Clyde, Robert Landis
  • Technical Paper
  • 2019-01-5094
Published 2019-12-30 by SAE International in United States
Separate from the event data recorder (EDR), which records and stores data from qualifying vehicle crash events, the Vehicle Control History (VCH) on Toyota vehicles records and stores certain vehicle data based on select driver inputs, such as hard acceleration or braking, or upon the activation of certain vehicle dynamic control systems such as antilock braking system (ABS), traction control (TRAC), vehicle stability control (VSC), and the pre-collision system (PCS). In the United States, VCH was first equipped on the 2013 Toyota RAV4 and has been subsequently introduced into other Toyota and Lexus models. Most recently, in addition to VCH data, additional PCS operational data (PCS-O) and image data (PCS-I) may be recorded and stored. The image storage capability may record under certain conditions such as if the system has automatically applied the vehicle brakes. PCS-O and PCS-I data became available with the launch of Toyota Safety Sense (TSS), a grouping of advanced active safety features equipped on many Toyota vehicles generally available in 2017. Multiple dynamic tests with a 2017 Toyota Corolla were performed…
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Mitigating Wire Insulation Damage During Processing and Handling

AE-8A Elec Wiring and Fiber Optic Interconnect Sys Install
  • Aerospace Standard
  • AIR5717
  • Current
Published 2019-12-27 by SAE International in United States
Wire and cable products progress through a series of handling or operational steps from the time they leave the manufacturer, and until a finished harness or assembly is ready for installation on a vehicle. Throughout these many steps, environmental or processing conditions may be present which can generate damage detrimental to the wire or cable and/or its intended application.
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Diesel Engine Combustion Control with Onboard Calibration by Using Feedback Error Learning

Department of Mechanical Engineering, University of Tokyo-Motoki Takahashi, Yudai Yamasaki, Shigehiko Kaneko
School of Integrated Design Engineering, Graduate school of-Makoto Eguchi, Naoki Fukuda, Hiromitsu Ohmori
  • Technical Paper
  • 2019-01-2318
Published 2019-12-19 by SAE International in United States
In this paper, we propose an onboard calibration method based on the feedback error learning (FEL). This controller is 2 degree of freedom controller. We use a cerebellar model articulation controller (CMAC) as the feedforward controller. By using this, fast learning will be possible. Due to the online learning of this controller, it becomes possible to correspond to changes in the environment such as aging. In this paper, we constructed FEL considering the premixed diesel combustion with dual peak heat release rate under transient operation. To confirm the effectiveness of this control system, experimental results will be shown.
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Adaptive Output Feedback Control of Premixed Diesel Combustion using a Discrete Dynamics Model

Kumamoto University-Seiya Fujii, Ikuro Mizumoto
The University of Tokyo-Motoki Takahashi, Yudai Yamasaki, Shigehiko Kaneko
  • Technical Paper
  • 2019-01-2319
Published 2019-12-19 by SAE International in United States
This paper deals with a combustion control system design problem for premixed diesel engines. Premixed diesel combustions can achieve high thermal efficiency while reducing emissions. However, premixed diesel combustions have low robustness with respect to changes in the environment. The traditional engine control is the feedforward control using look-up table called control map. Therefore, it is difficult to maintain a stable combustion for the premixed diesel combustions. Moreover, making the control map requires a huge number of experiments. In this paper, in order to robustly realize the premixed diesel combustion, a passivity-based adaptive output feedback control system design scheme is proposed based on a discrete dynamics model of the diesel combustion. The proposed method controls the in-cylinder heat release rate at each combustion cycle. The tracking control tests on a practical diesel engine are conducted to confirm the realization of the stable combustion by the proposed feedback controller. Moreover, designing the combustion control system based on an idea of model-based development (MBD) can reduce manpower and cost.
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The Role of Sensors in the Evolution of Robotics

  • Magazine Article
  • TBMG-35609
Published 2019-12-01 by Tech Briefs Media Group in United States

At one time, robotics was considered more science fiction than reality. That's changing. Today, robots are increasingly playing a role in our everyday lives. They're zooming around our homes to pick up dust, helping surgeons perform operations with even more precision, sniffing out suspicious packages for law enforcement, and on the factory floor, they're performing all kinds of tasks for automotive, electronics, and industrial manufacturing companies.

Self-Contained Wheel Unit

  • Magazine Article
  • TBMG-35612
Published 2019-12-01 by Tech Briefs Media Group in United States

Researchers have developed a self-contained wheel unit that combines a wheel and an electric motor with braking, suspension, steering, and a control system in a single module designed to be bolted to any vehicle frame. The unit could free manufacturers from making huge investments to develop those components from scratch and enables the economical production of specialized vehicles, even in small quantities.

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Usage of Telematics Data in Advance Powertrain Development

Honda Cars India Pvt Ltd.-Shubham Garg, Anurag Anurag, Mohit Singhal, Isao Chiba, Kouji Okayasu
  • Technical Paper
  • 2019-28-2438
Published 2019-11-21 by SAE International in United States
To achieve accuracy in model development with large-scale actual customer data in low cost and limited time usage of telematics system was adopted. Honda’s OBD II diagnostic connecting device Honda Connect was used as transceiver for this telematics system, which was used as an accessory in Honda vehicles. Data collected with this device with large sample size and regional diversity across India was used in product development for Honda System. Control system development for BSVI vehicles, Idle start stop hardware specification selection and Battery electric vehicle target range study was done with Honda Connect Data.
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