Results 281 to 290 of about 13,293,543 (349)

Trajectory Tracking Control of AUVs via Adaptive Fast Nonsingular Integral Terminal Sliding Mode Control

IEEE Transactions on Industrial Informatics, 2020
This article aims to develop an effective control method that can improve the convergence rate over the existing adaptive nonsingular integral terminal sliding mode control (ANITSMC) method for the trajectory tracking control of autonomous underwater ...
Lei Qiao, Weidong Zhang
semanticscholar   +1 more source

Continuous Adaptive Fast Terminal Sliding Mode-Based Speed Regulation Control of PMSM Drive via Improved Super- Twisting Observer

IEEE transactions on industrial electronics (1982. Print)
A continuous adaptive fast terminal sliding mode based speed regulation control is proposed for a permanent magnet synchronous motor (PMSM) drive, where an improved super-twisting algorithm with linear terms (STLT) is constructed in the super-twisting ...
Long Chen, Hongming Zhang, Hai Wang, Ke Shao, Guangyi Wang, A. Yazdani   +5 more
semanticscholar   +1 more source

Frictional properties of elastomers at increased sliding rates

Wear, 1975
Abstract The paper proposes a method for estimating temperatures on the friction surface of elastomers at increased sliding rates on the assumption that over a wide range of rates and temperatures the friction conditions are determined by their relaxation characteristics, provided the mechano-chemical processes do not exert any significant effect ...
G.V. Vinogradov, A.I. Yel'kin, G. M. Bartenev, S.Z. Bubman   +3 more
openaire   +1 more source

Effects of normal load and velocity on the dry sliding tribological behaviour of CoCrFeNiMo0.2 high entropy alloy

, 2020
A systematic experimental study has been conducted to evaluate the sliding tribological properties of CoCrFeNiMo0.2 high entropy alloy at room temperature.
G. Deng, A. Tieu, Xiaodong Lan, Lihong Su, Long Wang, Qiang Zhu, Hongtao Zhu   +6 more
semanticscholar   +1 more source

An approach to discrete-time sliding mode control with variable convergence rate to sliding surface

2008 SICE Annual Conference, 2008
In this paper, we propose a new design method of the convergence rate in discrete-time sliding mode control. The design of a sliding surface is implemented by Ackermannpsilas formula in discrete-time domain. The discrete-time sliding mode control based on Luenburger observer is used for the controller.
Choong Woo Lee, Chung Choo Chung
openaire   +1 more source

Worn surface and subsurface layer structure formation behavior on wear mechanism of CoCrFeMnNi high entropy alloy in different sliding conditions

, 2021
In this study, equiatomic CoCrFeMnNi high entropy alloy (HEA) was fabricated by induction melting and subsequent thermomechanical treatments were carried out to achieve single FCC phase with equiaxed grains.
Cheenepalli Nagarjuna, Hyeonjeong You, S. Ahn, Jun-woo Song, Kwang-Yong Jeong, B. Madavali, G. Song, Y. Na, J. Won, Hyoung-Seop Kim, Soon-jik Hong   +10 more
semanticscholar   +1 more source

Velocity and Strain-Rate Profiles in Materials Subjected to Unlubricated Sliding

Physical Review Letters, 2005
This Letter focuses on the plastic response of a material, treated as a fluid, when subjected to sliding interactions. The analysis couples momentum conservation with material flow laws to predict velocity and strain-rate profiles that develop during sliding. The profiles depend on the strain-rate sensitivity. The spatial extent of the deformed zone is
S, Karthikeyan, H J, Kim, D A, Rigney
openaire   +2 more sources

Intralayer interfacial sliding effect on the anti-impact performance of STF/Kevlar composite fabric

, 2021
The influence of intralayer interfacial sliding among yarns on the enhancement of anti-impact and energy absorption was investigated in this work. Firstly, the rheological test and yarn pull-out test were conducted to analyze the relationship between the
Junshuo Zhang, Yu Wang, Jianyu Zhou, Chunyu Zhao, Yuxuan Wu, Shuai Liu, X. Gong   +6 more
semanticscholar   +1 more source

A finite element formulation of thermomechanical rate-dependent frictional sliding

International Journal for Numerical Methods in Engineering, 1997
A combined theoretical and numerical approach is taken to consider the dynamic behaviour and the thermomechanical interactions of systems in which friction has an important role. Emphasis is placed on the proper numerical description of fully coupled thermomechanical response on frictional interfaces. From a theoretical standpoint, the first and second
Oancea, V. G., Laursen, T. A.
openaire   +2 more sources

Adaptive Second-Order Fast Nonsingular Terminal Sliding Mode Tracking Control for Fully Actuated Autonomous Underwater Vehicles

IEEE Journal of Oceanic Engineering, 2019
This paper focuses on the design of an adaptive second-order fast nonsingular terminal sliding mode control (ASOFNTSMC) scheme for the trajectory tracking of fully actuated autonomous underwater vehicles (AUVs) in the presence of dynamic uncertainties ...
Lei Qiao, W. Zhang
semanticscholar   +1 more source