Measurement and Control of a Straightening Process for Seamless Pipes

1993 ◽  
Vol 115 (3) ◽  
pp. 347-351 ◽  
Author(s):  
T. Katoh ◽  
E. Urata
Keyword(s):  
Sum Of Squares ◽  
Curing Process ◽  
Reactive Force ◽  
On Line ◽  
Series Of Experiments ◽  
Reference Pressure ◽  
And Control ◽  
Measurement And Control

This paper deals with an automatic curing process for out-of-straightness of terminal ends of seamless pipes. The developed curing process is composed of a measuring stage and a controlling stage. In the measuring stage, the out-of-straightness pattern of each pipe is measured automatically, then reference pressure points and press strokes are determined to minimize the sum of squares of deflection angles. In the controlling stage, elastic springback of the pipe is predicted by an observer using the calculated press stroke, on-line measured values of reactive force, and deflection of the pipe. Through a series of experiments, the validity of the proposed process was verified.

ON-LINE MEASUREMENT AND CONTROL OF PENICILLIN V PRODUCTION

1986 ◽  
pp. 75-78
Author(s):  
K. Frueh ◽  
Th. Lorenz ◽  
J. Niehoff ◽  
J. Diekmann ◽  
R. Hiddessen ◽  
...  
Keyword(s):  
Penicillin V ◽  
Line Measurement ◽  
On Line ◽  
And Control ◽  
Measurement And Control

Strategies for handling of on-line information for optimising nutrient removal

1996 ◽  
Vol 33 (1) ◽  
pp. 211-222
Author(s):  
M. K. Nielsen ◽  
T. B. Önnerth
Keyword(s):  
Full Scale ◽  
Normal Operation ◽  
Continuous Systems ◽  
Information Handling ◽  
New Information ◽  
Payback Time ◽  
On Line ◽  
Control Optimisation ◽  
And Control ◽  
Measurement And Control

Modern on-line measuring has given many new pieces of information which can reveal so far unknown details about load and process behaviour. This new information is primarily used for control optimisation purposes so that all available unused reserves in the plants during normal operation are used for improving the effluent quality and reducing operation costs. Secondly, the new on-line measurements can also be utilised for identifying the process relations as they are described in: a) software sensors, b) load characterisation and c) capacity of the actual plant. Because of the 100 times more detailed information we now get from full-scale plant operation, more fundamental development and research can be carried out based on experiments performed directly on full-scale plants and evaluations of the on-line response to identify the model structure and constant dynamics at full scale. In this way it is possible to develop new processes significantly more quickly than before the on-line information was available. To derive full profit from these improvements the following requirements must be met. a) Measurement. Before identifying the process design constants it is necessary to compensate for the load applied on the full-scale system. This detailed evaluation is often so tedious that it normally has to be performed on an off-line basis, while the data from on-line measurements are brushed and used for on-line control, consequently the new kind of tools are needed in information handling. b) The necessary excitations of the processes are always available during alternating operation. A condition for efficient control is controllability of the system; also in this respect the alternating system offers possibilities far more powerful than continuous systems. c) Third, it is necessary to develop models and strategies which make the new knowledge and control possibilities operational. The identified models, which are continuously updated, can be used for operational improvements which today give an excellent payback time for investment in on-line measurement and control systems. This is documented by introducing alternating operation which ensures the necessary information richness at plants with capacities down to below 20,000 PE. This paper discusses the key points in the recommended approach to and structure of the information handling. The efficiency is demonstrated by introducing alternating operation on a conventional recirculating plant.

Embedded PC On-Line Inspection System on NC Equipment

2016 ◽  
Vol 693 ◽  
pp. 1646-1650
Author(s):  
Yong Xiang Jiang ◽  
San Peng Deng ◽  
Nan Wang ◽  
Jing Ran Guo ◽  
Qiu Li
Keyword(s):  
Control Unit ◽  
Inspection System ◽  
Cutting Condition ◽  
Nc System ◽  
Intelligent Measurement ◽  
Nc Machine ◽  
On Line ◽  
Embedded Pc ◽  
And Control ◽  
Measurement And Control

Based on open NC system architecture, embedded condition monitoring and diagnosis units were studied with the characteristics of modularization and reconfigurable. The intelligent measurement and control unit can be used to on-line monitoring, fault early warming, intelligent diagnosis and remote maintenance, it provied a solution for group integration monitoring system construction of high-grade NC machine. In this paper, the implementation and function of the intelligent measurement and control unit were introduced from 4 aspects including whole framework, hardware, software and XPE OS. An example of cutting force on-line monitoring were given, which operate well for alarming in unstable cutting condition.

Measurement and Control of Moisture in Wheat

1970 ◽  
Vol 3 (11) ◽  
pp. T181-T187 ◽  
Author(s):  
M. Brain
Keyword(s):  
Control System ◽  
Moisture Content ◽  
Automatic Control ◽  
Automatic Control System ◽  
Microwave Technique ◽  
Line Measurement ◽  
On Line ◽  
And Control ◽  
Measurement And Control ◽  
Consequent Improvement

A microwave technique for the continuous on-line measurement of moisture content in wheat is described together with an automatic control system based on these measurements. The results from a prototype installation are given and the consequent improvement of flour parameters are discussed.

On-Line X-Ray Measurement and Control of Silver Emulsion Coating Weight

1974 ◽  
Vol 18 ◽  
pp. 259-264
Author(s):  
W. A. N. Severance
Keyword(s):  
Measurement Precision ◽  
Radiation Scattering ◽  
X Ray ◽  
Design Considerations ◽  
Source Selection ◽  
Basic Measurement ◽  
On Line ◽  
And Control ◽  
Coating Weight ◽  
Measurement And Control

AbstractThis paper describes the development of a radioisotope x-ray fluorescence gauge built to continuously measure and control the coating weight of wet silver emulsion. The method and apparatus for correcting the basic measurement for variations in water content and base film thickness are described. Design considerations, including source selection and arrangement to minimize radiation scattering and emulsion exposure while providing acceptable measurement precision or accuracy, are discussed.

scholarly journals On — Line Low Measurement and Control of Pulverised Fuel

2004 ◽  
Vol 37 (9) ◽  
pp. 273-275
Author(s):  
Jianyong Zhang ◽  
John Coulthard ◽  
Ruixue Cheng ◽  
Ray Keech
Keyword(s):  
On Line ◽  
And Control ◽  
Measurement And Control
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