Results 41 to 50 of about 4,640,849 (374)

Objective evaluation model of sewing flatness based on deep belief network

open access: yesXi'an Gongcheng Daxue xuebao, 2023
In view of the low accuracy of objective automatic evaluation of fabric sewing flatness, an objective evaluation model of fabric sewing flatness based on feature parameters and deep belief network (DBN) is proposed. Firstly, image preprocessing including
HU Sheng   +3 more
doaj   +1 more source

In-domain control of a heat equation: an approach combining zero-dynamics inverse and differential flatness [PDF]

open access: yes, 2015
This paper addresses the set-point control problem of a heat equation with in-domain actuation. The proposed scheme is based on the framework of zero dynamics inverse combined with flat system control.
Zheng, Jun, Zhu, Guchuan
core   +4 more sources

Flatness-Based High Frequency Control of a Hydraulic Actuator [PDF]

open access: yesJournal of Dynamic Systems, Measurement, and Control, 2011
This paper presents the design and implementation of a nonlinear feedforward control algorithm for a hydraulic actuator driven by a multistage servo valve. Combined with a conventional feedback control algorithm, high frequencies can be achieved even for large-scale strokes.
Kock, Florian, Ferrari, Cornelius
openaire   +2 more sources

Active Steering and Driving/Braking Coupled Control Based on Flatness Theory and a Novel Reference Calculation Method

open access: yesIEEE Access, 2019
Vehicle handing stability under the combined acceleration steering and braking steering conditions has a great impact on the vehicle safety. Therefore, the coupled steering and driving/braking stability control is essential.
Yuqiong Wang   +4 more
doaj   +1 more source

Accuracy of Surface Plate Measurements - General Purpose Software for Flatness Measurement [PDF]

open access: yes, 1990
Flatness departures of surface plates are generally obtained from straightness measurements of lines on the surface. A computer program has been developed for on-line measurement and evaluation, based on the simultaneous coupling of measurements in all ...
Heuvelman, C.J., Meijer, J.
core   +4 more sources

Accurate Tracking of Aggressive Quadrotor Trajectories using Incremental Nonlinear Dynamic Inversion and Differential Flatness

open access: yes, 2020
Autonomous unmanned aerial vehicles (UAVs) that can execute aggressive (i.e., high-speed and high-acceleration) maneuvers have attracted significant attention in the past few years.
Karaman, Sertac, Tal, Ezra
core   +1 more source

Real-Time Trajectory Planning and Control for Constrained UAV Based on Differential Flatness

open access: yesInternational Journal of Aerospace Engineering, 2022
The trajectory planning of UAV with nonholonomic constraints is usually taken as differential algebraic equation to solve the optimal control problem of functional extremum under the condition of inequality constraints.
Dongli Wu   +4 more
doaj   +1 more source

Flatness optimization of micro-injection moulded parts: The case of a PMMA microfluidic component [PDF]

open access: yes, 2011
Micro-injection moulding (µ-IM) has attracted a lot of interest because of its potential for the production of low-cost, miniaturized parts in high-volume.
Alcock, Jeffrey R.   +5 more
core   +1 more source

Turbulence Analysis Of An Experimental Flux-Rope Plasma [PDF]

open access: yes, 2014
We have previously generated elongated Taylor double-helix flux-rope plasmas in the SSX MHD wind tunnel. These plasmas are remarkable in their rapid relaxation (about one Alfven time) and their description by simple analytical Taylor force-free theory ...
Brown, Michael R.   +3 more
core   +2 more sources

Dual-Boost Inverter for PV Microinverter Application—An Assessment of Control Strategies

open access: yesApplied Sciences, 2022
Photovoltaic (PV) microinverters have grown rapidly in the small-scale PV market, where typical two-stage converters are used to connect one PV module to the single-phase AC grid.
Diana Lopez-Caiza   +5 more
doaj   +1 more source

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