Results 31 to 40 of about 33,915 (276)

A comparative investigation of meshing characteristics of anti-backlash single-and double-roller enveloping hourglass worm gears

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2019
The new precision transmission system-Anti-backlash roller enveloping hourglass worm gears are now widely employed in many industrial sectors such as robot joint design, packaging production line, and CNC (computer numerical control) machine tools ...
Huan ZHANG, Jie WANG, Shike WANG, Shisong WANG, Ge HE   +4 more
doaj   +1 more source

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

Advanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi, Hadi Moutablaleh, Ignatius A. Setiawan, Mehrshad Mehrpouya   +3 more
wiley   +1 more source

New Measure and Calculation Method for Gear Pair Normal Backlash

Jixie chuandong, 2020
Calculated the gear pair normal backlash constant c according to definition and calculation method of gear pair normal backlash from GB/Z 18620.2—2008 at a given work center distance.
Song Shusen, Yang Lianbo, Xie Songsong, Yang Xiao, Wang Xin, Tang Haichuan   +5 more
doaj  

Uniform Amorphization of Crystalline Silicon Surfaces Enabled by Deep Ultraviolet Femtosecond Laser Pulses

Advanced Engineering Materials, EarlyView.
Deep‐UV (258 nm) femtosecond pulses enable uniform amorphous silicon writing on Si(100)/(111) with a six‐fold larger fluence amorphization window than NIR methods. Optimized fluence and overlap yield 20–45 nm uniform and continuous amorphous layers. Microscopy shows sharp interfaces, and real‐time reflectivity reveals nanosecond melt–resolidification ...
Wissal Benali, Magali Gregoire, Matys Guyard, Tatiana Itina, David Grojo, Pol Sopeña   +5 more
wiley   +1 more source

Antifeminist backlash and critical criminology

, 2011
The violence to liberty done by the NSA and the Patriot Act distracts the public from the more substantial oppression realized in Family Law Court, under the influence of the Violence against Women Act (VAWA), feminist jurisprudence, and child custody ...
Dragiewicz, M
core   +2 more sources

Facing backlash and derailment risks: building capacities for navigating transformations to sustainability and justice in turbulent times

Global Sustainability
Non-Technical Summary Transformations to sustainability and justice have recently encountered backlash and political polarization, violent conflict, democratic backsliding, and dehumanization.
Per Olsson, Michele-Lee Moore, Peter Søgaard Jørgensen, Carl Folke   +3 more
doaj   +1 more source

Adaptive Multi-Parameter Estimation of Inertial Stabilization Platform with Unknown Load

Actuators, 2023
In order to improve the state monitoring and adaptive control capability of inertial stabilization platforms (ISPs) with unknown loads, it is necessary to estimate the dynamic parameters comprehensively online.
Jieji Zheng, Xin Xie, Baoyu Li, Ziping Wan, Ning Chen, Dapeng Fan   +5 more
doaj   +1 more source

Materials‐Driven Additive Manufacturing for Electrical Machines: Qualification‐Oriented Design Beyond Geometric Freedom

Advanced Engineering Materials, EarlyView.
This perspective reframes additive manufacturing for electrical machines as a qualification‐limited materials and architecture design problem. It links process–structure–property–performance relationships to magnetic, conducting, dielectric, and thermal property windows, highlighting where AM can enable segmented magnetic circuits, permanent magnet ...
Dénes Fodor, Loránd Szabó
wiley   +1 more source

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

IEEE 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, Lin Yang, Ran Ju, Xing Zhou, Meng Gao, You Xu, Haibin Yang, Gengcong Lin, Shifeng Huang   +8 more
doaj   +1 more source

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

ASEAN 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, Trần Xuân Kiên, Nguyễn Công Định   +2 more
doaj   +1 more source