Results 1 to 10 of about 3,700,119 (305)

Simulation of unloading processes of short dump belt conveyors with speed control belt movement [PDF]

open access: yesНаучно-технический вестник Брянского государственного университета, 2021
Short dump belt conveyors are used to create bulk cargo both as an integral part of technological machines in the processing of building materials, and as vehicles in a chain of conveyors for transporting bulk cargo in accordance with the logistics of ...
Romanovich A.A.   +2 more
doaj   +1 more source

An Optimization Method of High-Speed Railway Rescheduling to Meet Unexpected Large Passenger Flow

open access: yesJournal of Advanced Transportation, 2022
In the rapidly changing multimodal transportation market, not only the obligation in providing train services but also the responsibility in helping other transportation modes to meet emergencies are instrumental for maximizing the generalized benefit of
Junduo Zhao   +3 more
doaj   +1 more source

Alleviation of Dynamic Stall Moments by Morphing Flap

open access: yesHangkong gongcheng jinzhan, 2021
Active deflection of trailing edge control surface can reduce the adverse effect of airfoil dynamic stall on aerodynamic characteristics.This study set out to investigate the performance of morphing flap on dynamic stall alleviation.
OUYANG Yan   +3 more
doaj   +1 more source

Design of a New Catheter Operating System for the Surgical Robot

open access: yesApplied Bionics and Biomechanics, 2021
In interventional surgery, the manual operation of the catheter is not accurate. It is necessary to operate the catheter skillfully and effectively to protect the surgeon from radiation injury.
Xu Ma   +4 more
doaj   +1 more source

Observer-Based Nonlinear Proportional–Integral–Integral Speed Control for Servo Drive Applications via Order Reduction Technique

open access: yesActuators, 2023
This study designs an advanced single-loop output feedback system for speed servo drive applications, in which a simple proportional–integral–integral (PII) controller equipped with nonlinear feedback and feed-forward gains is formed.
Yonghun Kim   +3 more
doaj   +1 more source

Torque effect on vibration behavior of high-speed train gearbox under internal and external excitations

open access: yesRailway Engineering Science, 2023
The high-speed train transmission system, experiencing both the internal excitation originating from gear meshing and the external excitation originating from the wheel–rail interaction, exhibits complex dynamic behavior in the actual service environment.
Yue Zhou   +7 more
doaj   +1 more source

Recursive Neural Network as a Multiple Input–Multiple Output Speed Controller for Electrical Drive of Three-Mass System

open access: yesEnergies, 2023
Electrical drive systems are commonly applied for the mechanisms of precise movement, where having a high-quality position and high-quality speed control is especially valuable. Very often, the mechanical part of these systems reveals resonant properties
Krzysztof Zawirski   +2 more
doaj   +1 more source

Traffic Analysis of Specific Motorways with Different Usage Characteristics in Hungary with the Method of Section Control

open access: yesActa Technica Jaurinensis, 2020
This article presents the result of the large-scale average speed analysis made in Hungary at two motorways in 12 different sections. During the analysis speeds of normal and reduced operations were analysed.
Zsolt Sándor, Ákos Monostori
doaj   +1 more source

An Improved Sliding Mode Control Method to Increase the Speed Stability of Permanent Magnet Synchronous Motors

open access: yesEnergies, 2022
A permanent magnet synchronous motor (PMSM) plays an important role in the operation performance of an electric vehicle. In order to increase the speed stability of PMSMs, an improved sliding mode control (SMC) method is proposed in this paper.
Yuhao Wei, Li Sun, Zhongxian Chen
doaj   +1 more source

Effect of Boundary-layer Suction on the Performance of an Intake under Off-design Condition [PDF]

open access: yesJournal of Applied Fluid Mechanics
Under off-design conditions, shock wave-boundary layer interaction (SWBLI) and large-scale separation within the intake become prominent, leading to significant decrease in aerodynamic performance.
Y. Zhang, D. Yang, B. Dong, S. Wang
doaj   +1 more source

Home - About - Disclaimer - Privacy