Results 11 to 20 of about 1,105,850 (344)

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

A survey on user-centric cell-free massive MIMO systems

open access: yesDigital Communications and Networks, 2022
The mobile data traffic has been exponentially growing during the last several decades. This was enabled by the densification of the network infrastructure in terms of increased cell density (i.e., Ultra-Dense Network (UDN)) and/or the increased number ...
Shuaifei Chen   +4 more
doaj   +1 more source

Speed Model of Electronically Controlled Diesel Engine Based on Sliding Mode Control [PDF]

open access: goldProceedings of the 2016 5th International Conference on Civil, Architectural and Hydraulic Engineering (ICCAHE 2016), 2016
Xiaobing Yi
openaire   +2 more sources

Design of speed controller for electronic fuel injection gasoline generator based on feed-forward PID control

open access: greenJournal of Measurement Science and Instrumentation, 2015
As for the application of electronic fuel injection(EFI)system to small gasoline generator set,mechanical speed controller cannot be coupled with EFI system and has the shortcomings of lagged regulation and poor accuracy,a feed-forward control strategy ...
ZHAO Zi-qing, LIU Chang-wen, ZHANG Ping
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

Adaptive Reconstruction for Spatial Covariance Matrix in Hybrid Massive MIMO Systems

open access: yesIEEE Access, 2021
Spatial covariance matrix (SCM) plays an important role in super-resolution direction-of-arrival (DOA) estimation, which can be derived using traditional sample average approach.
Yiwei Yan, Yinsheng Liu, Hongtao Duan
doaj   +1 more source

High-Speed Finite Control Set Model Predictive Control for Power Electronics [PDF]

open access: yesIEEE Transactions on Power Electronics, 2017
Common approaches for direct model predictive control (MPC) for current reference tracking in power electronics suffer from the high computational complexity encountered when solving integer optimal control problems over long prediction horizons. We propose an efficient alternative method based on approximate dynamic programming, greatly reducing the ...
Bartolomeo Stellato   +2 more
openaire   +3 more sources

An Improved Convolutional-Neural-Network-Based Fault Diagnosis Method for the Rotor–Journal Bearings System

open access: yesMachines, 2022
More layers in a convolution neural network (CNN) means more computational burden and longer training time, resulting in poor performance of pattern recognition.
Honglin Luo   +3 more
doaj   +1 more source

Rail fastener detection of heavy railway based on deep learning

open access: yesHigh-Speed Railway, 2023
Image detection based on machine learning and deep learning currently has a good application prospect for railway fault diagnosis, with good performance in feature extraction and the accuracy of image localization and good classification results.
Yuan Cao   +5 more
doaj   +1 more source

Development of a Robotic Catheter Manipulation System Based on BP Neural Network PID Controller

open access: yesApplied Bionics and Biomechanics, 2020
In the process of artificial interventional therapy, the operation of artificial catheter is not accurate, which will bring strong radiation damage to surgeons.
Xu Ma, Jinpeng Zhou, Xu Zhang, Qi Zhou
doaj   +1 more source

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