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Instrumented steering wheel for accurate ADAS development

Politecnico di Milano-Gianpiero Mastinu, Massimiliano Gobbi, Francesco Comolli
Toyota Central R&D Labs-Masatoshi Hada
  • Technical Paper
  • 2019-01-1241
To be published on 2019-04-02 by SAE International in United States
The knowledge of the forces exerted by each hand of the driver at the steering wheel is useful for a better understanding of the driver steering action. This information is needed while developing haptic steering wheels useful for tuning Advanced Driver Assistance Systems (ADAS). The actual forces applied by the driver’s hands can be measured by means of a new Instrumented Steering Wheel (ISW), that, by using two six axis load cells, can measure the three force components and the three moment components exerted by the two hands, separately. Additionally, the instrumented steering wheel allows to measure the grip force, defined as the holding force applied by each hand on the handle. A full compensation of the inertia forces due to the vehicle acceleration guarantees an extremely high level of accuracy in the measure of the forces exerted by the driver. The resolution is just 0.1 N. The ISW has been already used for a couple of ADAS activities. The first activity refers to monitoring the driver behaviour during driving tests on a track equipped…
 

Automotive High-Speed Ethernet Press Fit Header Design and Performance

TE Connectivity Corporation-Guadalupe Chalas
  • Technical Paper
  • 2019-01-0475
To be published on 2019-04-02 by SAE International in United States
As the demand for Gigabit Automotive Ethernet based on single unshielded twisted pair continues to increase, there is a need to expand the market to include robust automotive grade solder-less technology. The new Automotive Ethernet solution features Automotive press fit contacts that can handle the harsh environments of the application and that can be applied to the PCB without the need of soldering processes. The solution at hand performs up to 1Gbps speeds without the need for plastic header housing redesign, which makes the solution compatible with its through-hole counterpart. Other advantages of a solder-less solution include the increase in the amount of materials that can suit the application once the temperature requirements of the system decrease. Also, the smaller diameter PCB Vias required for press fit applications and lack of variability in solder amounts, yield a connector whose differential impedance is better matched and can potentially achieve higher data rates. This paper explores the design advantages of switching to a solder-less approach for twisted pair Ethernet as well as the challenges of using existing…
 

Residual Injury Situation of Severe Motorcyclists and Accident Characteristics - Proposals on Safety Standards

Hannover Medical School-Dietmar Otte
  • Technical Paper
  • 2019-01-0638
To be published on 2019-04-02 by SAE International in United States
The aim of this study was to analyze the current accident situation of motorcycles with cubic capacity > 125 cm³ in Germany, especially with most severely injured and killed riders MAIS 3+. The characteristics and reasons of these injury pattern are analyzed and countermeasures for injury protection proposed. The accident data of 464 drivers of motorcycles were analyzed, collected by a scientific research team of GIDAS (German In-Depth Accident Study) within the years 2010 up to 2015 as a statistical representative sample of the real accident occurrence in Germany. The study points out that 16.9% of motorcycle accidents lead to most severely injured riders with MAIS 3+. Compared to car occupants this percentage is about 8 times higher. Comparative collectives of car occupants show that only 1.9% of MAIS 3+ injured persons occur. Additionally, it could be shown that approximately 22% of motorcyclists with helmet use suffered head injuries. Most severe injuries AIS 3+ could be found at the head frequently in the form of skull fractures included the skull-base. Most severe injuries can be…
 

Automatic Speech Recognition System Considerations for the Autonomous Vehicle

Ford Motor Co., Ltd.-Joshua Wheeler
  • Technical Paper
  • 2019-01-0861
To be published on 2019-04-02 by SAE International in United States
Automatic Speech Recognition (ASR) and Hands Free Calling (HFC) capabilities have become prominent in the automotive industry, with most new vehicle sales equipped with some level of ASR system. With the common use of mobile personal assistants and smartphones with Bluetooth capability, customer expectations for built-in ASR and HFC systems have increased significantly. With the advent of the Autonomous Vehicle, the philosophy of customer interaction with the ASR system carried over from the traditional vehicle must be reconsidered. Now the voice-to-ASR system needs to be capable of serving a passenger in any seat of the car. These shifts in focus require changes to the microphone selection and placement to serve the entire vehicle. Further complicating the scenario are new sources of sound that are specific to the Autonomous Vehicle. Hardware mounted on the roof that are used to support cameras and LIDAR sensors, and mechanisms meant to keep that hardware clean and functioning, add even further noise contamination to the voice interaction. In this paper, we consider the complications on picking up the intended customer’s…
 

Collaborative Robotic Fastening Using Stereo Machine Vision

Electroimpact Inc.-Ryan Haldimann
  • Technical Paper
  • 2019-01-1374
To be published on 2019-03-19 by SAE International in United States
With typically over 2.3 million parts attached with over 3 million fasteners on a twin aisle aircraft, it may be surprising to learn that approximately two out of every three are fastened by hand. In addition the fasteners are often installed in locations designed for strength and not necessarily ergonomics. These facts lead to vast opportunities to automate this tedious and repetitive task. The solution outlined in this paper utilizes the latest machine vision and robotics techniques to solve these unique challenges. Stereo machine vision techniques find the fastener on the interior of an aerospace structure and calculate the 6DOF location in less than 500ms. Once the fastener is located, sealed, and inspected for sealant bead width and gaps, a nut or collar is then installed. Force feedback capabilities of a collaborative robot are used to prevent part damage and ensure the nut or collar are properly located on the fastener. This type robot also opens up the possibility of interacting more closely with humans as fastening can be done simultaneously with other manual assembly…
 

The Auto-Generation of Calibration Guides from MATLAB® Simulink®

Delphi Corporation-William Allen
Delphi Technologies Inc.-Bharath Sundar
  • Technical Paper
  • 2019-01-1332
To be published on 2019-03-19 by SAE International in United States
With the inception of Model Based Development and Auto-Code generation, many organizations are developing controls & diagnostics algorithms in Simulink® to meet customer & regulatory requirements. Advances in Model Based Development in Simulink® have made it easier to auto-code models to C code and helped software engineers to streamline their workflow. Typically after the software has been developed in Simulink®, the models are handed over to the Calibration team who would be responsible for calibrating the features to meet the desired customer & regulatory requirements. However, once the models are handed over to the calibration team, the calibration engineers are unaware of how to calibrate the features because documentation is not available. Typically documentation for the model trailed behind the software process as this was considered a manual task where a lot of time was spent on document formatting. This process was very cumbersome and lack of documentation or up-to date documentation has caused a lot of pain for OEM's and Tier 1 Suppliers. This paper will explore the auto-generation of documentation from Simulink® models…
 

Restricted Access ‘C’ Clamping Smart Drilling Unit

Manufacturing Technology Centre-Agata Suwala, Patrick Land, Karol Janik, Richard Kasler
  • Technical Paper
  • 2019-01-1334
To be published on 2019-03-19 by SAE International in United States
One-way assembly of aero structures has the potential to significantly reduce build times. One of the solutions, which goes towards achieving this philosophy, is the use of a ‘C' clamping automated drilling system. The Manufacturing Technology Centre has developed and manufactured a ‘C' clamping automated drilling unit to overcome many of the limitations of current designs, which prevent their use on a broader range of structures. The drilling unit addresses issues with inter-stack burrs, access, size and weight restrictions as well as economic factors. This technical paper will present the outcomes from the design and manufacture of the drilling unit that is to be used within restricted access areas, as either a hand held device or as a robotic end effector free from any cables or hoses, allowing full and unhindered articulation of any robot motion. The device’s services: power, tool lubrication, swarf extraction and control systems have been designed to be embedded, rendering it a standalone unit. With the miniaturisation of the electrical and mechanical elements, combined with a deep throat, high clamping force…
 
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Telescopic Boom Length Indicating System

Cranes and Lifting Devices Committee
  • Ground Vehicle Standard
  • J1180_201902
  • Current
Published 2019-02-15 by SAE International in United States
This SAE Recommended Practice applies to mobile cranes when used in lifting crane service which are equipped with boom length indicating devices.
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Artificial Joint Restores Wrist-Like Movements

  • Magazine Article
  • TBMG-33717
Published 2019-02-01 by Tech Briefs Media Group in United States

For patients missing a hand, one of the biggest challenges to regaining a high level of function is the inability to rotate one's wrist (pronate and supinate). These are essential movements involved in everyday tasks such as using a door handle, a screwdriver, a knob, or simply turning over a piece of paper. For those missing their hand, these are much more awkward and uncomfortable tasks, and current prosthetic technologies offer only limited relief to this problem.

 
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Electronic Glove Gives Robotic Hand Sense of Touch

  • Magazine Article
  • TBMG-33723
Published 2019-02-01 by Tech Briefs Media Group in United States

Stanford engineers have developed an electronic glove containing sensors that could one day give robotic hands the sort of dexterity that humans take for granted.