Results 71 to 80 of about 84,148 (213)
Advances in Mechanical EngineeringGrinding is a critical method for enhancing the quality of worm tooth surfaces, and its process optimization has long been a significant research focus; however, existing methods are insufficient in addressing the nonlinearity and complexity inherent in ...
Jiongkang Ren, Shisong Wang, Keqi Ren
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Sliding Mode Control in Aerospace Applications: A Survey
International Journal of Robust and Nonlinear Control, EarlyView.ABSTRACT Sliding mode control (SMC) enjoys robustness to matched and unmatched (in the case of minimum phase input‐output dynamics) bounded perturbations, and finite time convergence. Second‐order and higher‐order sliding mode control systems (2‐SMC/HOSMC) retain all the advantages of sliding mode control, but in addition can be applied to systems of ...
Yuri Shtessel, Christopher Edwards
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An Enhanced Soft‐Containing Gripper for Pick‐And‐Place of Oyster Products at Extreme Handling Speed
Journal of Field Robotics, EarlyView.ABSTRACT Soft robotic grippers have been developed for high‐speed handling of soft, fragile foods. For example, our previously designed soft‐containing gripper has been implemented on food production lines. However, existing soft robotic grippers remain inadequate for food pick‐and‐place tasks at extreme handling speeds (e.g., > 70 pcs/min).
Yang Zhang, Zhongkui Wang
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, 2020 The article deals with an optimization procedure of roller elements geometry with regard to durability of spherical roller bearings. The aim of the article is to examine the impact of change of the roller elements inner geometry on durability and ...
Robert Kohar +3 more
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UAV‐Based Precision Seed Dropping for Automated Reforestation
Journal of Field Robotics, EarlyView.ABSTRACT Wildfires and deforestation pose significant threats to forest ecosystems, motivating scalable methods for reforestation beyond labor‐intensive cultivation of native forest seedlings in nurseries. To enable large‐scale direct seeding of native species, this paper presents the design, analysis, and field evaluation of a UAV‐based seed‐dropping ...
Qi Rui Lee +5 more
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Collateralization of the Body in the Central Sahara: On Forms and Effects
Economic Anthropology, EarlyView.ABSTRACT This article tracks a transporter along the route linking Tripoli to the Saharan town of Ghadames in post‐2011 Libya, asking what secures an obligation when the institutions that normally underwrite it (offices, courts, recognized names) have receded. I distinguish the debt, the sum owed, from the security pledged to answer for it: what may be
Moad Musbahi
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SmartBot, EarlyView.Electrostatic clutches offer programmable variable stiffness for multi‐DOF robots, but their continuous motion is usually bottlenecked by spatial constraints and detachment delays. Here, the authors report a compact annular electrostatic clutch joint with a biphasic amplitude‐frequency modulation strategy to rapidly mitigate residual polarization ...
Haochen Yong +5 more
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Meshing performance analysis of non-backlash end-face roller enveloping cylindrical worm drive
Jixie chuandongObjectiveRoller enveloping toroidal worm drives are widely used in computer numerical control (CNC) turntables but face challenges such as high error sensitivity and difficult installation.
WANG Kai, DOU Chenyang, CHEN Yonghong
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steel research international, EarlyView.In primary electric arc furnace (EAF) steelmaking, carbon boiling removes nitrogen from liquid steel and sustains slag foaming. In 100% scrap‐ or hydrogen direct reduced iron (HDRI)‐based EAF steelmaking, carbon boiling is absent; therefore, carbonaceous material and oxygen injection into the slag is needed to maintain foaming and avoid nitrogen ...
Zushu Li +3 more
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Safety Science and Technology, EarlyView.Molten aluminum–water explosion triggered by leakage remains the core unresolved safety hazard hindering safe production in aluminum direct chill casting. This review summarizes its explosion mechanism, key influencing factors, prevention technologies, existing gaps, and prospects of intelligent multi‐technology integrated explosion‐proof systems ...
Min Wang +5 more
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