Results 11 to 20 of about 12,020,127 (298)

Experimental Study of the Particles Influence on the Pyramid Wake within the Turbulent Boundary Layer [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
Particle imaging velocimetry (PIV) was used to study the near-field variation of a pyramid rough element in clear water and a liquid–solid boundary layer (thickness: 60 mm).
Y. T. Cheng, J. Sun, P. Chen, W. Y. Chen
doaj   +1 more source

Identification of Hidden Failures in Process Control Systems Based on the HMG Method [PDF]

open access: yes, 1998
We will continue here the research work, the goal of which was to introduce the notion of nondeterministic aggregation operators and study their properties, even in relation to classification systems and the associated learning problem.
Cutello, V., Montero, Javier
core   +2 more sources

Experimental Study on the Flow Pattern of Double-hemisphere Rough Elements with Different Streamwise Spacing [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2023
Particle image velocimetry is used to study the variation around single- and double-hemisphere rough elements with different streamwise spacings immersed in the boundary layer.
P. Chen, J. Sun, Y. T. Cheng, W. Y. Chen
doaj   +1 more source

Gaussian process model based predictive control [PDF]

open access: yes, 2003
Gaussian process models provide a probabilistic non-parametric modelling approach for black-box identification of non-linear dynamic systems. The Gaussian processes can highlight areas of the input space where prediction quality is poor, due to the lack ...
,   +4 more
core   +1 more source

Research progress in nitrogen-doped electrically conductive silicon carbide ceramics

open access: yesCailiao gongcheng, 2022
The electrically conductive silicon carbide (SiC) ceramics that can be machined by electrical discharge machining, can not only overcome the highlight shortcomings of traditional high resistivity-grade SiC ceramics in machinability, but also maintain its
YANG Jianguo   +7 more
doaj   +1 more source

Optimizing Control of a Batch Reaction Process [PDF]

open access: yes, 1966
The batch chemical reaction is chosen as the process model to be optimized and the rate constants are functions of pressure only, as the reactions are assumed to occur isothermally.
Sayama, Hayatoshi   +2 more
core   +1 more source

The contribution of quality aspects to process control [PDF]

open access: yes, 1986
Process operators often have difficulties with quality supervision and control for the following reasons: (i) analytical results are infrequent and much delayed, (ii) conventional automatic control cannot sufficiently reduce quality deviations, and (iii)
Rijnsdorp, John E.
core   +2 more sources

A Supervisor for Control of Mode-switch Process [PDF]

open access: yes, 1994
Many processes operate only around a limited number of operation points. In order to have adequate control around each operation point, and adaptive controller could be used. When the operation point changes often, a large number of parameters would have
Hilhorst, R.A.   +4 more
core   +4 more sources

Special Probabilistic Prediction Model for Temperature Characteristics of Dynamic Fluid Processes

open access: yesIEEE Access, 2019
Accurately predicting the temperature characteristics of a dynamic discharge process in different transportation conditions can improve the performance of reciprocating multiphase pumps in practice.
Hongying Deng   +4 more
doaj   +1 more source

Integrating process design and control: An application of optimal control to chemical processes [PDF]

open access: yes, 2008
In this paper, the optimal design of process systems generically used in chemical industries is studied. The closely coupled nature of optimal design specification of the equipment, the determination of the optimal process parameters in steady-state ...
Athans   +23 more
core   +2 more sources

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