Results 1 to 10 of about 2,121,081 (246)

Sensor Fault Tolerant Control for Hybrid Systems With Sinusoidal Disturbance

open access: yesIEEE Access, 2022
This paper aims to design of an active fault-tolerant control AFTC of switched systems in the presence of sensor fault and periodic disturbances. AFTC requires sensor fault estimation.
Salwa Yahia   +2 more
doaj   +1 more source

Improved Sliding Mode Control of Permanent Magnet Synchronous Linear Motor Based on Model-Assisted Linear Extended State Observer

open access: yesIEEE Access, 2022
Aiming at the problem that generalized disturbance such as parameter perturbation, load disturbance and unmodeled dynamics will reduce the performance of the mover speed control of the permanent magnet synchronous linear motor (PMSLM), an improved ...
Jian Lin   +4 more
doaj   +1 more source

PMSM sliding mode control based on novel reaching law and extended state observer

open access: yesAdvances in Mechanical Engineering, 2022
To improve the dynamic quality and control performance of the permanent magnet synchronous motor speed control system, a novel sliding mode control method with improved reaching law for PMSM was proposed, which has a shorter reaching time and small ...
Shuai Li   +3 more
doaj   +1 more source

Novel Real-Time Compensation Method for Machine Tool’s Ball Screw Thermal Error

open access: yesApplied Sciences, 2023
The real-time compensation of thermal error in ball screws is an effective means to improve the accuracy of machining tools. However, the trade-off between robustness and computational efficiency of existing ball screw thermal error models is complicated
Ren Rong   +4 more
doaj   +1 more source

Precision estimation of large space-borne parabolic antenna support structure

open access: yesAdvances in Mechanical Engineering, 2022
An accuracy analysis approach – mosaic equivalence approach which is based on the principle of approximate structure substitution, to a large complex spatial mechanism with three-dimensional (3D) paired bearings support joint (PBS-joint) clearance is ...
Chen Chuanzhi   +3 more
doaj   +1 more source

Effect of Assembly Errors on Ground Tooth Surface Deviations for Large-Scale CNC Gear Profile Grinding Machines

open access: yesMachines, 2022
Assembling plays a significant role in the performance of large-scale CNC gear profile grinding machines. An approach in the deviation evaluation of ground tooth surfaces taking into account assembly errors is proposed in this paper.
Wenzheng Ding   +3 more
doaj   +1 more source

RETRACTED: Prediction of energy consumption of numerical control machine tools and analysis of key energy‐saving technologies

open access: yesIET Collaborative Intelligent Manufacturing, 2021
The objective of this study is to ensure the sustainable development of traditional machinery manufacturing industry under limited conditions of non‐renewable energy, and reduce the environmental pollution caused by high energy consumption of machine ...
Han Qiang   +2 more
doaj   +1 more source

Numerical Awareness in Control [PDF]

open access: yes, 2004
Algorithm development, sensitivity and accuracy issues, large-scale computations, and high-performance numerical ...
Varga, Andras
core   +1 more source

Toward Intelligent Machine Tool

open access: yesEngineering, 2019
With the development of modern information technology—and particularly of the new generation of artificial intelligence (AI) technology—new opportunities are available for the development of the intelligent machine tool (IMT).
Jihong Chen   +7 more
doaj   +1 more source

Minimal time for the continuity equation controlled by a localized perturbation of the velocity vector field [PDF]

open access: yes, 2019
In this work, we study the minimal time to steer a given crowd to a desired configuration. The control is a vector field, representing a perturbation of the crowd velocity, localized on a fixed control set.
Duprez, Michel   +2 more
core   +4 more sources

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