Parallel testing of vehicle intelligence via virtual-real interaction

2019 ◽  
Vol 4 (28) ◽  
pp. eaaw4106 ◽  
Author(s):  
Li Li ◽  
Xiao Wang ◽  
Kunfeng Wang ◽  
Yilun Lin ◽  
Jingmin Xin ◽  
...  
Keyword(s):  
Autonomous Vehicles ◽  
Closed Loop ◽  
Testing System ◽  
Parallel Testing ◽  
Accelerate Evaluation

A self-driven closed-loop parallel testing system implements more challenging tests to accelerate evaluation and development of autonomous vehicles.

Development of a Closed-Loop High-Cycle Resonant Fatigue Testing System

2011 ◽  
Vol 52 (3) ◽  
pp. 275-288 ◽  
Author(s):  
G. J. Yun ◽  
A. B. M. Abdullah ◽  
W. Binienda
Keyword(s):  
Closed Loop ◽  
Fatigue Testing ◽  
Testing System

Durability Testing System with Power Recycle for the Variable Displacement Closed-Loop Hydraulic Pumps

2012 ◽  
Vol 241-244 ◽  
pp. 1333-1337
Author(s):  
Hua Bing Wang ◽  
Jun Ke Hu
Keyword(s):  
Closed Loop ◽  
Testing System ◽  
Hydraulic Motor ◽  
Rotating Speed ◽  
Inlet Port ◽  
System Pressure ◽  
Variable Displacement ◽  
Durability Testing ◽  
Pressure Compensation ◽  
Starting Control

A testing system scheme with power recycle for hydraulic pumps’ durability is present, which is based on a hydraulic motor with hydraulicly overridden pressure compensation. The hydraulic motor can adaptively adjust its displacement to meet the demand of displacement match of the power feedback in the system. The system pressure can be set by adjusting the starting control pressure of the motor. The rotating speed of the pump is guaranteed by the control of the driven electrical motor. A hydraulic bridge unit is used to guide the flow from the outport of the pump to the fixed inlet port of the hydraulic motor and thus causes the motor to rotate in a certain direction to drive the pump in order to recycle the power.

scholarly journals Evaluation and Testing Platform for Automotive LiDAR Sensors

2021 ◽  
Author(s):  
Tiago Gomes ◽  
Ricardo Roriz ◽  
Luís Cunha ◽  
Andreas Ganal ◽  
Narciso Soares ◽  
...  
Keyword(s):  
Autonomous Vehicles ◽  
Angular Resolution ◽  
3D Visualization ◽  
Field Of View ◽  
Testing System ◽  
Automotive Electronics ◽  
Technological Transformation ◽  
Testing Platform ◽  
The World ◽  
The University

The world is facing a great technological transformation towards full autonomous vehicles, where optimists predict that by 2030, autonomous vehicles will be sufficiently reliable, affordable and common to displace most human driving. To cope with these trends, reliable perception systems must enable vehicles to hear and see all the surroundings, being light detection and ranging (LiDAR) sensors a key instrument for recreating a 3D visualization of the world in real time. However, perception systems must rely in accurate measurements of the environment. Thus, sensors must be calibrated and benchmarked before being placed on the market or assembled in a car. This article presents an Evaluation and Testing Platform for Automotive LiDAR sensors with the main goal of testing not only commercially available sensors, but also sensor prototypes currently under development in Bosch Automotive Electronics division. The testing system can benchmark any LiDAR sensor under different conditions, recreating the expected driving environment to which such devices are normally subjected. To characterize and validate the sensor under test, the platform evaluates several parameters such as the field of view (FoV), angular resolution, sensor’s range, etc. This project results from a partnership between the University of Minho and Bosch Car Multimedia Portugal, S.A.

A Multi-Degree of Freedom System for Biomechanical Testing

1994 ◽  
Vol 116 (3) ◽  
pp. 371-373 ◽  
Author(s):  
David N. Kunz ◽  
Ronald P. McCabe ◽  
Thomas A. Zdeblick ◽  
Ray Vanderby
Keyword(s):  
Degrees Of Freedom ◽  
Closed Loop ◽  
Biomechanical Testing ◽  
Testing System ◽  
Closed Loop Control ◽  
Bending Moments ◽  
Pure Bending ◽  
Loop Control ◽  
Torsional Testing ◽  
Three Degrees Of Freedom

A system is described that allows axial, torsional, and bending testing of biomechanical specimens. The system uses electric motors under closed loop control in its grips allowing application of pure bending moments. These grips attach to an axial/torsional testing system. Thus, it provides simultaneous closed loop control of all three degrees of freedom (D.O.F), so that under any given test condition either the loads or the displacements for each D.O.F. can be maintained at zero, selected constant values, or simultaneously controlled. This enables the expedient evaluation of the mechanical behavior of biological structures under complex loadings or simple loadings (one D.O.F.) with no artificially induced constraints in the other two D.O.F.’s due to specimen mounting.

Intestinal Bacteriology of Closed Loop, Strangulated Obstruction in Dogs.

1961 ◽  
Vol 41 (3) ◽  
pp. 245-250 ◽  
Author(s):  
George H. Bornside ◽  
Isidore Cohn
Keyword(s):  
Closed Loop
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