Level measurement and control strategies for subsea separators

2001 ◽  
Vol 10 (3) ◽  
pp. 679 ◽  
Author(s):  
Bjorn T. Hjertaker
Keyword(s):  
Control Strategies ◽  
Level Measurement ◽  
And Control ◽  
Measurement And Control

Progress in sensor technology - progress in process control? Part I: Sensor property investigation and classification

2003 ◽  
Vol 47 (2) ◽  
pp. 103-112 ◽  
Author(s):  
L. Rieger ◽  
J. Alex ◽  
S. Winkler ◽  
M. Boehler ◽  
M. Thomann ◽  
...  
Keyword(s):  
Control Strategies ◽  
Sensor Technology ◽  
Limiting Factor ◽  
Test Environment ◽  
Sensor Property ◽  
Sensor Models ◽  
The Cost ◽  
And Control ◽  
Measurement And Control

To ensure correctly operating control systems, the measurement and control equipment in WWTPs must be mutually consistent. The dynamic simulation of activated sludge systems could offer a suitable tool for designing and optimising control strategies. Ideal or simplified sensor models represent a limiting factor for comparability with field applications. More realistic sensor models are therefore required. Two groups of sensor models are proposed on the basis of field and laboratory tests: one for specific sensors and another for a classification of sensor types to be used with the COST simulation benchmark environment. This should lead to a more realistic test environment and allow control engineers to define the requirements of the measuring equipment as a function of the selected control strategy.

scholarly journals The measurement and control of high-risk host cell proteins for polysorbate degradation in biologics formulation

2022 ◽  
Author(s):  
Xuanwen Li ◽  
Fengqiang Wang ◽  
Hong Li ◽  
Douglas D Richardson ◽  
David J Roush
Keyword(s):  
High Risk ◽  
Host Cell ◽  
Method Development ◽  
Control Strategies ◽  
Ionic Surfactant ◽  
Formulation Development ◽  
High Concentration ◽  
Host Cell Proteins ◽  
And Control ◽  
Measurement And Control

Abstract Non-ionic surfactant polysorbates (PS), including PS-80 and PS-20, are commonly used in the formulation of biotherapeutic products for both preventing surface adsorption and acting as stabilizer against protein aggregation. Trace levels of residual host cell proteins (HCPs) with lipase or esterase enzymatic activity have been shown to degrade polysorbates in biologics formulation. The measurement and control of these low-abundance, high-risk HCPs for polysorbate degradation is an industry-wide challenge to achieve desired shelf-life of biopharmaceuticals in liquid formulation, especially for high-concentration formulation product development. Here, we reviewed the challenges, recent advances and future opportunities of analytical method development, risk assessment and control strategies for polysorbate degradation during formulation development with a focus on enzymatic degradation. Continued efforts to advance our understanding of polysorbate degradation in biologics formulation will help develop high-quality medicines for patients.

Research and Design of Mine Water Warehouse Level Measurement and Control System

2012 ◽  
Vol 524-527 ◽  
pp. 67-72
Author(s):  
Xiao Kang Zhang
Keyword(s):  
Control System ◽  
Water Level ◽  
Mine Water ◽  
Dynamic Monitoring ◽  
Laboratory Simulation ◽  
Good Effect ◽  
Measurement And Control System ◽  
Level Measurement ◽  
And Control ◽  
Measurement And Control

In the prevention and control of the mine water ，the water level of the dynamic monitoring storehouse play a pivotal role. Mine water warehouse water level measurement and control system which is designed by this paper is by programmable logic devices S7-200 and configuration king Wincc constitute a hardware and software. Between master of the computer and monitoring stations can bus is for data transmission. Laboratory simulation test and Field testing have a good effect, And it can realize the function of Sound and light alarm , dynamic display of water level-the time trend curve and data storage and reports, provide effective basis for coal mine water storehouse safety management and monitoring water-level.

scholarly journals The role of measurement in the development of industrial automation

ACTA IMEKO ◽  
2014 ◽  
Vol 3 (1) ◽  
pp. 4
Author(s):  
S. S. Carlisle
Keyword(s):  
Quality Control ◽  
Process Control ◽  
Control Strategies ◽  
Manufacturing Processes ◽  
Industrial Automation ◽  
And Control ◽  
Measurement And Control ◽  
International Measurement

<p>This is a reissue of a paper which appeared in ACTA IMEKO 1967, Proceedings of the 4th International Measurement Congress, 1967, Warsaw, vol. 1, pp. 37-50.</p> <p>The paper sets a frame on the role of measurement and control as critical tools to support the automation of manufacturing processes. In this perspective three main requirements for measurement are discussed, i.e., to identify where automation can be most profitably used; to investigate individual process behaviors and hence to formulate process control strategies; and finally to perform quality control of products.</p>

A Precise Automatic Assembly System for Fabrication of Complex Miniature Products

2011 ◽  
Vol 317-319 ◽  
pp. 757-763 ◽  
Author(s):  
Xi Wen Zhang ◽  
Xiao Dong Wang ◽  
Yi Luo ◽  
Lin Teng ◽  
Liang Chen ◽  
...  
Keyword(s):  
Vision System ◽  
Control Strategies ◽  
Force Sensor ◽  
Assembly System ◽  
Screw Thread ◽  
Feature Fitting ◽  
Local Feature Extraction ◽  
And Control ◽  
Measurement And Control ◽  
Assembly Error

Assembly is one of the most important procedure in manufacturing complex miniature products. Batch assembly is limited by the manual manipulation, for which specially trained technicians is required. In order to automatically assembly certain complex miniature products consisting of multiple parts with different shape and various dimension, and also to reduce the production cost and improve efficiency, an assembly system was developed. Hardware architecture of the system was discussed in detail. Measurement and control strategies in assembling procedure were presented. Local feature extraction and fitting algorithms, reference datum setting were applied to overcome the occlusion. Linear and circular feature fitting from multiple local images of parts, coordinate transformation and the compensation of stages assembly error angle among three local coordinates were adopted to improve the measuring accuracy of vision system. Microscale force sensor was introduced to control the contact force, and the accuracy obtained is less than 1mN. Torque sensor was adopted for sensing the torque during the screw thread assembling, stepping motor and flexible coupler were applied to make the torque smoothly transferred, all of which help precisely measuring and controlling the torque during the M1.4 screw thread assembly.

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