High-Speed Computer-Based Audio Instrumentation for Cassette Duplication Process Control

1984 ◽  
Author(s):  
Krystyna Vaughan ◽  
Robert Finger
Keyword(s):  
Process Control ◽  
High Speed ◽  
Computer Based ◽  
Speed Computer

Information retrieval on a high-speed computer

1959 ◽  
Author(s):  
A. R. Barton ◽  
V. L. Schatz ◽  
L. N. Caplan
Keyword(s):  
Information Retrieval ◽  
High Speed ◽  
Speed Computer

Rule-Based Control of Weld Bead Width in Pulsed Gas Tungsten Arc Welding (GTAW)

1996 ◽  
Vol 210 (1) ◽  
pp. 93-98 ◽  
Author(s):  
C S Wu ◽  
Y C Liu
Keyword(s):  
Process Control ◽  
Arc Welding ◽  
High Speed ◽  
Gas Tungsten Arc Welding ◽  
Weld Bead ◽  
Bead Width ◽  
Rule Based ◽  
Television Camera ◽  
Gas Tungsten Arc ◽  
Gas Tungsten

A rule-based control system of weld bead width is established for realizing in-process control of pulsed gas tungsten arc welding. The system consists of a microprocessor-controlled power supply and working table, a solid state television camera, a high-speed analogue-to-digital converter and an image processing and control computer. Considering the characteristic of arc light and its influence on vision sensing, special measures were taken for image capturing, processing and weld bead width extraction. The rule-based model was combined with the principle of PID (proportional integral derivative) control, and a parameter-changing PID controller was designed. The bead-on-plate welding experiments were carried out. The results show that the system is of good adaptablity for in-process control of weld bead width in pulsed gas tungsten arc welding (GTAW).

Once Bitten — Twice Shy

1980 ◽  
Vol 13 (10) ◽  
pp. i-i
Author(s):  
Joe Wilson
Keyword(s):  
Control System ◽  
Process Control ◽  
Control Engineer ◽  
Computer Control ◽  
Digital System ◽  
Computer Control System ◽  
Computer Based ◽  
New System

Outlines the problems and self-questioning facing the process control engineer when deciding to replace the computer control system which he has found difficult to justify over the last decade. Should he return to conventional analogue instrumentation or choose a microprocessor based control system? Having highlighted in his mind the problems with his computer based system, has he missed the majority of the advantages which a digital system brings? Does he realise that a major manufacturer has been acutely aware of his problems and has sought to eliminate them with the design of any new system? Can his faith be restored?

High Speed Liquid Chromatography for In‐Process Control

2006 ◽  
Vol 29 (7-8) ◽  
pp. 931-948 ◽  
Author(s):  
Domingo Blanco Gomis ◽  
Noé Sánchez Núñez ◽  
M. Dolores Gutiérrez Álvarez
Keyword(s):  
Liquid Chromatography ◽  
Process Control ◽  
High Speed

Chemical and Clinical Evaluation of the Continuous-flow Analyzer "SMAC"

1974 ◽  
Vol 20 (8) ◽  
pp. 1062-1070 ◽  
Author(s):  
Morton K Schwartz ◽  
Victor G Bethune ◽  
Martin Fleisher ◽  
Gina Pennacchia ◽  
Celia J Menendez-Botet ◽  
...  
Keyword(s):  
Continuous Flow ◽  
High Speed ◽  
Total Bilirubin ◽  
Carbon Dioxide Content ◽  
Protein Matrix ◽  
Sodium Potassium ◽  
Calcium Phosphorus ◽  
Matrix Reference Material ◽  
Computer Controlled ◽  
Speed Computer

Abstract "SMAC" (Sequential Multiple Analyzer plus Computer) is a high-speed computer-controlled multitest analyzer. A 20-channel prototype SMAC (glucose, urea nitrogen, creatinine, carbon dioxide content, total bilirubin, calcium, phosphorus, cholesterol, iron, uric acid, chloride, sodium, potassium, total protein, albumin, creatine kinase, alkaline phosphatase, lactate dehydrogenase, and aspartate and alanine aminotransferases) has been evaluated for: (a) method precision during within-day runs and on a day-to-day basis over a period of time; (b) method linearity over a range established on a chemical basis and related to clinical requirements, with use of both aqueous standards and protein matrix reference material; and (c) correlation of SMAC values with those obtained by the methods routinely in use in our department.

scholarly journals High Speed, High Temperature, Fault Tolerant Operation of a Combination Magnetic-Hydrostatic Bearing Rotor Support System for Turbomachinery

2004 ◽  
Author(s):  
Mark Jansen ◽  
Gerald Montague ◽  
Andrew Provenza ◽  
Alan Palazzolo
Keyword(s):  
High Temperature ◽  
High Speed ◽  
Closed Loop ◽  
Fault Tolerant ◽  
Active Vibration Control ◽  
Control Algorithms ◽  
Displacement Sensors ◽  
Rotor Support ◽  
Active Vibration ◽  
Speed Computer

Closed loop operation of a single, high temperature magnetic radial bearing to 30,000 RPM (2.25 million DN) and 540°C (1,000°F) is discussed. Also, high temperature, fault tolerant operation for the three axis system is examined. A novel, hydrostatic backup bearing system was employed to attain high speed, high temperature, lubrication free support of the entire rotor system. The hydrostatic bearings were made of a high lubricity material and acted as journal-type backup bearings. New, high temperature displacement sensors were successfully employed to monitor shaft position throughout the entire temperature range and are described in this paper. Control of the system was accomplished through a stand alone, high speed computer controller and it was used to run both the fault-tolerant PID and active vibration control algorithms.

scholarly journals Preliminaries on the Accurate Estimation of the Hurst Exponent Using Time Series

2021 ◽  
Author(s):  
Ginno Millán ◽  
Román Osorio-Comparán ◽  
Gastón Lefranc
Keyword(s):  
Time Series ◽  
Hurst Exponent ◽  
High Speed ◽  
Mean Squared Error ◽  
Computer Network ◽  
Accurate Estimation ◽  
Minimum Length ◽  
Squared Error ◽  
In Series ◽  
Speed Computer

<div>This article explores the required amount of time series points from a high-speed computer network to accurately estimate the Hurst exponent. The methodology consists in designing an experiment using estimators that are applied to time series addresses resulting from the capture of high-speed network traffic, followed by addressing the minimum amount of point required to obtain in accurate estimates of the Hurst exponent. The methodology addresses the exhaustive analysis of the Hurst exponent considering bias behaviour, standard deviation, and Mean Squared Error using fractional Gaussian noise signals with stationary increases. Our results show that the Whittle estimator successfully estimates the Hurst exponent in series with few</div><div>points. Based on the results obtained, a minimum length for the time series is empirically proposed. Finally, to validate the results, the methodology is applied to real traffic captures in a high-speed computer network.</div>

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