Results 31 to 40 of about 252 (156)

Improving Handling Stability Performance of Four-Wheel Steering Vehicle Based on the H2/H∞ Robust Control

open access: yesApplied Sciences, 2019
Considering the demand for vehicle stability control and the existence of uncertainties in the four-wheel steering (4WS) system, the mixed H2/H∞ robust control methodology of the 4WS system is proposed.
Fei-Xiang Xu   +4 more
doaj   +1 more source

The 4W Model of Drowning

open access: yesInternational Journal of Aquatic Research and Education, 2007
The aim of the study was to develop a conceptual model of drowning incidents. The authors conducted qualitative content analysis of drowning-incident videos (N = 41) and semistructured interviews of those involved in drowning incidents (N = 34), followed by the measurement of frequencies and Boolean search with matrix intersection.
Stathis Avramidis   +2 more
openaire   +2 more sources

Research on Curved Path Tracking Control for Four‐Wheel Steering Vehicle considering Road Adhesion Coefficient

open access: yesMathematical Problems in Engineering, Volume 2020, Issue 1, 2020., 2020
Curved path tracking control is one of the most important functions of autonomous vehicles. First, small turning radius circular bends considering bend quadrant and travel direction restrictions are planned by polar coordinate equations. Second, an estimator of a vehicle state parameter and road adhesion coefficient based on an extended Kalman filter ...
Runqiao Liu   +4 more
wiley   +1 more source

GEOMETRIC ANALYSIS OF MANEUVERABILITY PERFORMANCE FOR VEHICLES WITH TWO STEERING AXLES [PDF]

open access: yesTransport Problems, 2017
One of the most important features of motor vehicles is their steering maneuverability. Ways of determining single axle steering are well known. This paper presents an idea of how to determine maneuverability of motor vehicles with two steering axles ...
Jędrzej PILISIEWICZ, Roman KACZYŃSKI
doaj   +1 more source

Four-wheel Steering Control Algorithm of Long Wheelbase Vehicles

open access: yesKongzhi Yu Xinxi Jishu
Long wheelbase design of vehicle can effectively increase the standing area without increasing the body length, thus increasing the passenger capacity. Today, with the development of urbanization, the long wheelbase vehicle design has become a trend, but
ZHONG Hanwen   +4 more
doaj   +3 more sources

Risk-Sensitive Rear-Wheel Steering Control Method Based on the Risk Potential Field

open access: yesApplied Sciences, 2021
Various driving assistance systems have been developed to reduce the number of automobile accidents. However, the control laws of these assistance systems differ based on each situation, and the discontinuous control command value may be input ...
Toshinori Kojima   +1 more
doaj   +1 more source

Efficacy Comparison of Five Different Acupuncture Methods on Pain, Stiffness, and Function in Osteoarthritis of the Knee: A Network Meta‐Analysis

open access: yesEvidence-Based Complementary and Alternative Medicine, Volume 2018, Issue 1, 2018., 2018
The principal objective of this present study was to compare the effects of different acupuncture methods on pain, stiffness, and physical function for osteoarthritis of the knee by the pairwise and network meta‐analysis (NMA). A network meta‐analysis of randomized controlled trials (RCTs) was searched from three English databases and one Chinese ...
Shaowei Li   +8 more
wiley   +1 more source

Robust H∞ Output‐Feedback Yaw Control for Vehicles with Differential Steering

open access: yesJournal of Control Science and Engineering, Volume 2018, Issue 1, 2018., 2018
This paper examines the problem of designing a robust H∞ output‐feedback yaw controller with both input and output constraints for four‐wheel independently driven in‐wheel electric vehicles (EVs) with differential steering. Specifically, the controller aims are to ensure the stability and improve the performance of the EV despite variations in the road
Paul Oke   +3 more
wiley   +1 more source

Development of a six-wheel drive vehicle: A comparative study on steering performance

open access: yesJournal of Agricultural Engineering, 2019
The innovation for the recent agriculture tractors have been widely developed. These tractors are used to enhance the harvesting activities in way to lowering the labour cost.
Abd Rahim Shuib   +2 more
doaj   +1 more source

Decomposition‐Assisted Computational Technique Based on Surrogate Modeling for Real‐Time Simulations

open access: yesComplexity, Volume 2017, Issue 1, 2017., 2017
The development of complex simulation systems is extremely costly as it requires high computational capability and expensive hardware. As cost is one of the main issues in developing simulation components, achieving real‐time simulation is challenging and it often leads to intensive computational burdens.
Nariman Fouladinejad   +4 more
wiley   +1 more source

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