Results 31 to 40 of about 197,539 (295)

Hydraulic drive system prevents backlash [PDF]

open access: yes, 1965
Hydraulic drive system uses a second drive motor operating at reduced torque. This exerts a relative braking action which eliminates the normal gear train backlash that is intolerable when driving certain heavy ...
Acord, J. D.
core   +1 more source

Innate Immune Reprogramming Mediated by Endogenous Retroelement Dysregulation Drives Multiple Sclerosis Progression

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
Epigenetic reprogramming in hematopoietic stem and progenitor cells (HSPCs) and downstream myeloid cells, mediated by H3.3 downregulation and endogenous retroelement (ERE) overexpression, contributes to the progression of multiple sclerosis (MS). ABSTRACT Background Skewed myelopoiesis in the bone marrow has been identified as a key driver of multiple ...
Li‐Mei Xiao   +6 more
wiley   +1 more source

A Gear Backlash Identification and Compensation Method to Enhance Industrial Robot Repeatability

open access: yesIEEE Access
Industrial robots are extensively utilized in machinery manufacturing owing to their multiple degrees of freedom (DoF) and inherent flexibility. However, backlash not only impairs the bidirectional repeatability and multi-directional repeatability of the
Jinxiang Yao   +8 more
doaj   +1 more source

Nonlinear Identification and Decoupling Sliding Mode Control of Macro-Micro Dual-Drive Motion Platform with Mechanical Backlash

open access: yesMachines, 2023
A macro–micro dual-drive motion platform is a class of key system utilized in ultra-precision instruments and equipment for realizing ultra-high-precision positioning, which relates to the fields of semiconductor manufacturing, ultra-precision testing ...
Shuo Kang   +4 more
doaj   +1 more source

Determination of Backlash Value in the Feed Motion System of Machine Tools Using Shallow Neural Networks

open access: yesAlgorithms
This paper presents research aimed at detecting and quantifying backlash in the feed motion subsystem of machine tools using positioning accuracy test results.
Slobodan Tabakovic   +3 more
doaj   +1 more source

Coded Language: The History, the Message, and 2016 [PDF]

open access: yes, 2017
How do politicians, particularly presidential candidates, talk about race without talking about race? Since the 1960s, race baiting in American politics has gone increasingly underground into the realm of coded language and dog-whistle rhetoric; that ...
Bruno, Adam
core   +2 more sources

Multiple Sclerosis Relapse Activity After Ozanimod Discontinuation in DAYBREAK Trial Participants

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
Multiple Sclerosis Relapse Activity After Ozanimod Discontinuation in DAYBREAK Trial Participants. ABSTRACT Objective Return of disease activity is expected when patients discontinue disease‐modifying therapy (DMT) for multiple sclerosis (MS). Some MS DMTs are associated with higher‐than‐expected disease activity (rebound) after discontinuation.
Ralf Gold   +12 more
wiley   +1 more source

渐开线圆柱齿轮副侧隙的几何模型及公式

open access: yesJixie chuandong, 2014
From the definition of backlash,the geometric elements of normal backlash and circumferential backlash are given by analyzing the meshing process of a pair of external involute cylindrical spur gears in geometrical method.In further,the formula of normal
董玉涛
doaj  

Adaptive Backstepping Control of Electrical Transmission Drives with Elastic, Unknown Backlash and Coulomb Friction Nonlinearity

open access: yesASEAN Journal on Science and Technology for Development, 2017
In this paper, we present a new scheme to design an adaptive controller for uncertain nonlinear systems with unknown backlash, Coulomb friction nonlinearity.
Huỳnh Văn Đông   +2 more
doaj   +1 more source

Where feminists dare

open access: yesOñati Socio-Legal Series, 2023
This paper focuses on the public debate in Poland and Italy concerning the right to abortion in the contemporary rise of populist neo-conservative forces in Europe and of a global feminist movement.
Agnieszka Bielska-Brodziak   +3 more
doaj   +1 more source

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