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SmartPlay Studio-A Connected Infotainment Development

Maruti Suzuki India, Ltd.-Pankaj Kumar Bharti, Shashi Kant Roy, Surendra Raghuwanshi, Satish Pandey, Ritesh Khandelwal, Tarun Aggarwal, Satish Kumar Pandey
  • Technical Paper
  • 2019-28-2440
To be published on 2019-11-21 by SAE International in United States
Infotainment has been always an important aspect of life which has made its way to car design. The cars today are much more advanced compared to their predecessors. The in-vehicle infotainment advancements have followed the consumer electronics market in terms of technologies such as Touchscreen, App based Navigation, Voice Assistant and other multimedia services. This trend is going to expand further as smartphones have revolutionized the infotainment domain with awareness and accessibility to customers. The infotainment system in the cars are expected to be connected not only to the cloud but various vehicle controllers to display host of information & controls at customer`s fingertips. To design a system that supports connectivity to both cloud and vehicle is challenging in terms of cost and design for the OEMs. With focus on Indian market condition and global trends, this paper analyzes the customer expectation for Connected Infotainment system. It also explains the methodology adopted by Maruti Suzuki India Limited to: (i) Provide a seamless Connected Infotainment system (Smartplay Studio) for its model line-up (ii) Leveraging Smartphone Linkage…

Sensor-Packed Glove Learns Signatures of the Human Grasp

  • Magazine Article
  • TBMG-34881
Published 2019-08-01 by Tech Briefs Media Group in United States

Wearing a sensor-packed glove while handling a variety of objects, researchers compiled a dataset that enables an AI system to recognize objects through touch alone. The information could be leveraged to help robots identify and manipulate objects and may aid in prosthetics design. The tactile sensing system could be used in combination with traditional computer vision and image-based datasets to give robots a more human-like understanding of interacting with objects.

Sensor-Packed Glove Could Aid Prosthetic Design

  • Magazine Article
  • TBMG-34811
Published 2019-07-01 by Tech Briefs Media Group in United States

Researchers have compiled a massive dataset that enables an AI system to recognize objects through touch alone. Signals are collected by a user wearing a sensor-packed glove while handling a variety of objects. The information could be leveraged to help robots identify and manipulate objects and may aid in prosthetics design.

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Role of Dynamic Stiffness in Effective Isolation

Deere & Company-Yuzhen Yang
John Deere India Pvt, Ltd.-Balavardhan Reddy Dasabai
Published 2019-06-05 by SAE International in United States
In any machinery, avoiding noise and vibration completely is a difficult task due to the structural dynamic behaviors of components. To safeguard the operator, it is important to best isolate the operator station from NVH environment. Cabin isolation is an important aspect to minimize structure borne noise and tactile vibrations to be transferred into the cabin. Isolators are selected based on the isolation system inertial properties at mounting locations in the operating frequency range interested. The most important assumption to select isolators are that the active side and passive side of the isolators are nearly rigid so impedance mismatch is created for effective isolation.This paper describes the importance of dynamic stiffness of the structures on both the active and passive side for better NVH performance. NVH performance of passive side is evaluated analytically and computationally in terms of tactile vibrations and structure borne noise for various ratios of the dynamic stiffness over isolator stiffness. The isolator selection criterion is also discussed based on rigid body modes, operating frequency range, transmissibility ratio, and kinematic energy distributions.
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Evaluation of a Robust Haptic Interface for Semi-Autonomous Vehicles

SAE International Journal of Connected and Automated Vehicles

Clemson University, USA-Chengshi Wang, Yue Wang, John R. Wagner
  • Journal Article
  • 12-02-02-0007
Published 2019-05-15 by SAE International in United States
The advent of steer-by-wire technologies has changed the driving paradigm for drivers and vehicle autonomy. Such technologies integrate electric motors to actuate the tire-road plus human-machine interfaces. Steer-by-wire vehicles can benefit from haptic concepts through the provision of tunable force feedback, coupled with nonlinear control, to introduce lane keeping and pathway following technologies that minimize and possibly eliminate driver actions. In this article, two vehicle haptic interfaces, including a robotic grip and a joystick, both of which are accompanied by nonlinear sliding mode control, have been developed and studied on a steer-by-wire platform integrated with a virtual reality driving environment. An operator-in-the-loop evaluation that included 30 human test subjects investigated these haptic steering interfaces over a prescribed series of driving maneuvers through real-time data logging and post-test questionnaires. A conventional steering wheel with the robust sliding mode controller was used for all the driving events for comparison. Subjective and objective results from the tests demonstrate that the driver’s experience can be enhanced by up to 76.3% with a robotic grip steering input when compared to…
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Transparent, Self-Healing Electronic Skin

  • Magazine Article
  • TBMG-34411
Published 2019-05-01 by Tech Briefs Media Group in United States

Scientists have taken inspiration from underwater invertebrates like jellyfish to create an electronic skin with similar functionality. Like a jellyfish, the electronic skin is transparent, stretchable, touch-sensitive, and self-healing in aquatic environments.

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Detection of Presence and Posture of Vehicle Occupants Using a Capacitance Sensing Mat

Clemson University-Rahul Prasanna Kumar, Yunyi Jia
Ford Motor Company-David Melcher, Pietro Buttolo
Published 2019-04-02 by SAE International in United States
Capacitance sensing is the technology that detects the presence of nearby objects by measuring the change in capacitance. A change in capacitance is triggered either by a change in dielectric constant, area of overlap or distance of separation between the electrodes of the capacitor. It is a technology that finds wide use in applications such as touch screens, proximity sensing etc. Drawing motivation from such applications, this paper investigates how capacitive sensing can be employed to detect the presence and posture of occupants inside vehicles. Compared to existing solutions, the proposed approach is low-cost, easy to deploy and highly efficient. The sensing system consists of a capacitance-sensing mat that is embedded with copper foils and an associated sensing circuitry. Inside the mat the foils are arranged in rows and columns to form several touch-nodes across the surface of the mat. The system segregates row and column capacitances from each other and computes their tensor product to generate grayscale capacitance-sensing images. The images are real-time pictorial representation of the capacitance of each touch-node. When the mat…
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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
Published 2019-04-02 by SAE International in United States
We introduce in this paper a new Instrumented Steering Wheel (ISW) for ADAS development. The ISW has been designed, constructed and employed with satisfactory results. The ISW is able to measure three forces, three moments and the grip force at each hand of the driver. The ISW has been used for ADAS activities on an instrumented road vehicle. The aim was to use both the vehicle states and the ISW data for evaluating the driver behaviour. Two research activities were performed. The first activity refers to monitoring the driver behaviour during tests on a track. The second activity refers to the use of haptic ISWs, able to improve the ADAS systems.Referring to the first activity, the greatest majority of drivers applied always the same sequence of forces (pull, radial, tangential) either during emergency manoeuvres, either during slow speed curving.Referring to the second activity, we found that, by exploiting an ISW, the driver steering purpose could be inferred, before the steering wheel is rotated.
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Modelling Non Cooperative Human-Automation Interactions in a Haptic Shared Control Framework

University of North Carolina Charlotte-Amirhossein Ghasemi, Arjun Yeravdekar
Published 2019-04-02 by SAE International in United States
This paper addresses the interaction between the human driver and automation system in a Haptic Shared Control framework using a non-cooperative model predictive game approach. We model the human and automation’s interaction in a scenario when both driver and automation system detects an obstacle but select different paths for avoiding it. For such a situation, the effects of varying information patterns, namely the Nash and Stackelberg strategies on the shared steering angle are investigated. The simulation demonstrates the influences of the path-following weights on negotiating control authority between the human driver and the automation system.
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CFD-Simulation and Validation of Cabin Pressure during Door Closing Motions

Ford Motor Company-Mallikarjun Sukumar, Sunil Patil
Ford Werke GmbH-Andreas Cousin, Marc Seggern
Published 2019-04-02 by SAE International in United States
Under the competitive pressure of automotive industry the customer’s focus is on a vehicle’s quality perception. Side door closing efforts make a considerable share of the overall impression as the doors are the first physical and haptic interface to the customer. Customer’s subjective feeling of vehicle quality demands for detailed analysis of each contributor of door closing efforts. Most contributors come from kinematic influences. Beside the losses due to mechanical subsystems like the checkarm, latch or hinge friction one of the biggest impacts originates from the pressure spike that builds up due to air being pushed into the cabin. Subject of this publication is to discuss the dependencies of closing efforts on cabin pressure and air extraction. It demonstrates an approach to simulate the development of the air pressure during door closing motions and the validation of the simulation method with the “EZ-Slam” measurement device. In order to produce a correlation between simulation and reality a simplified model of a vehicle cabin is created. The validation tests are conducted on a physical test rig, built…
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