Publications
Results
- Showing results for:
- Reset all filters
Search results
-
Conference paperStonier A, Pain D, Westlake A, et al., 2011,
Integration of stochastic simulation with advanced multivariate and visualisation analyses for rapid prediction of facility fit issues in biopharmaceutical processes
, 21st European Symposium on Computer Aided Process Engineering (ESCAPE-21), Publisher: ELSEVIER SCIENCE BV, Pages: 1356-1360, ISSN: 1570-7946 -
Conference paperDi Geronimo Gil GJ, Alabi DB, Iyun OE, et al., 2011,
Merging process models and plant topology
, International Symposium on Advanced Control of Industrial Processes, ADCONIP 2011, Pages: 15-21The paper discusses the merging of first principles process models with plant topology derived in an automated way from a process drawing. The resulting structural models should make it easier for a range of methods from the literature to be applied to industrial-scale problems in process operation and design. © 2011 Zhejiang University.
-
ReportCraig I, Aldrich C, Braatz R, et al., 2011,
Control in the process industries
, Control in the process industries, in The Impact of Control Technology, Overview, Success Stories, and Research Challenges, T. Samad and A. Annaswamy (Eds), Publisher: IEEE -
Journal articleJukka T, Thambirajah J, Larsson M, et al., 2011,
Comparison of Three Electromechanical Oscillation Damping Estimation Methods
, IEEE Transactions on Power Systems, Vol: 26, Pages: 2398-2407, ISSN: 0885-8950This paper describes three data driven methods to monitor electromechanical oscillations in interconnected power system operation. The objective is to compare and contrast the performance of the methods. The accuracy of damping ratio and frequency of oscillations are the measures of the performance of the algorithms. The advantages and disadvantages of various techniques and their limitations to measurement noise have been considered while assessing performance. The target frequency and damping are computed using the Nordic power system simulation model.
-
Journal articleSharifzadeh M, Rashtchian D, Pishvaie M, et al., 2010,
Energy Induced Separation Network Synthesis of an Olefin Compression Section: A Case Study
, Industrial & Engineering Chemistry Research, Vol: 50, Pages: 1610-1623When latent heat is transferred in a heat exchanger network, the formation of the second phase creates an opportunity for separation. This network is known as a Heat Induced Separation Network (HISEN). HISENs have been extended to include pressure adjusting devices for improving the thermodynamic feasibility of the network. This extended network is termed an Energy Induced Separation Network (EISEN). Most examples of EISENs in the literature are environmental pollution treatment case studies which do not require liquid phase mass integration or shaft power integration. They assume a predetermined extent of separation and mostly are based on conceptual methods of design. This paper explains how the optimization framework must be developed in order to systematically address the general characteristics of EISENs. The framework is illustrated using a case study of the synthesis problem of an olefin compression section.
-
Conference paperIkram W, Thornhill NF, 2010,
Wireless communication in process automation: A survey of opportunities, requirements, concerns and challenges
, Pages: 471-476The advancements in wireless networking technology, specifically in the short-range wireless networking technology, offer an enormous opportunity for wireless connectivity of field devices both in oil and gas and other chemical processing plants. The prerequisite of a field network includes real-time support for mixed traffic, availability, security, reliability and scalability in a harsh industrial environment. These conditions have to be fulfilled by any wireless network in order to operate. This paper presents a brief overview of the requirements for wireless in process automation, relative standings of existing short-range wireless network technologies based on the outlined criteria, and associated shortcomings. Furthermore, an examination of emerging industrial wireless standards which are designed to address the unique and stringent requirements of the process industry, is presented.
- Abstract
- Open Access Link
- Cite
- Citations: 4
-
Journal articleThambirajah J, Barocio E, Thornhill NF, 2010,
Comparative review of methods for stability monitoring in electrical power systems and vibrating structures
, IET GENERATION TRANSMISSION & DISTRIBUTION, Vol: 4, Pages: 1086-1103, ISSN: 1751-8687- Author Web Link
- Open Access Link
- Cite
- Citations: 43
-
Conference paperIkram W, Stoianov I, Thornhill NF, 2010,
Towards a Radio-Controlled Time Synchronized Wireless Sensor Network
, IEEE Emerging Technologies and Factory Automation (ETFA 2010), ISSN: 1946-0740Wireless sensor networks are deployed to monitor real-world phenomena, and are seeing growing demand in commerce and industry. These networks can benefit from time synchronized clocks on distributed nodes. The precision of time synchronization depends on error elimination or reliable estimation of errors associated with synchronization message delays. This paper examines an approach to time synchronize motes using onboard radio-controlled clocks. The advantage will be the minimisation of non-deterministic sources of errors in time synchronization amongst receivers. This approach of synchronization using out-of-band and dedicated time source is aimed to achieve network-wide, scalable, topology-independent, fast-convergent and less application-dependent solutions.
-
Journal articleApelt TA, Thornhill NF, 2009,
Inferential measurement of sag mill parameters IV: Inferential model validation
, MINERALS ENGINEERING, Vol: 22, Pages: 1032-1044, ISSN: 0892-6875- Author Web Link
- Open Access Link
- Cite
- Citations: 8
-
Journal articleApelt TA, Thornhill NF, 2009,
Inferential measurement of SAG mill parameters V: MPC simulation
, MINERALS ENGINEERING, Vol: 22, Pages: 1045-1052, ISSN: 0892-6875- Author Web Link
- Open Access Link
- Cite
- Citations: 11
-
Journal articleThambirajah J, Benabbas L, Bauer M, et al., 2009,
Cause-and-effect analysis in chemical processes utilizing XML, plant connectivity and quantitative process history
, COMPUTERS & CHEMICAL ENGINEERING, Vol: 33, Pages: 503-512, ISSN: 0098-1354- Author Web Link
- Open Access Link
- Cite
- Citations: 63
-
Conference paperBeez S, Fay A, Thornhill NF, 2008,
Automatic generation of Bond Graph models of process plants
, IEEE International Conference on Emerging Technologies and Factory Automation, ETFA 2008, Publisher: IEEE, Pages: 1294-1301This paper presents an application for the automatic generation of Bond Graph models. The basis for this automated creation is a modified plant model in the XML-format according to the IEC PAS 62424 (CAEX). The application developed in the programming language C, extracts and converts the information which is, then, stored in a model file meeting the requirements and structure of the modelling/simulation-language Dymola. Bond Graphs are used as the modelling technique since they do not distinguish between different energy domains and, therefore, combine several advantages against other modelling techniques. The developed application can be used for multiple purposes such as simulations, visualizations and other specific tasks that might emerge during the planning and operation process of plants and other engineering systems. © 2008 IEEE.
-
Journal articlePate ME, Turner MK, Thornhill NF, et al., 2004,
Principal component analysis of nonlinear chromatography
, BIOTECHNOLOGY PROGRESS, Vol: 20, Pages: 215-222, ISSN: 8756-7938- Author Web Link
- Cite
- Citations: 19
-
Journal articleBauer M, Thornhill NF, 2008,
A practical method for identifying the propagation path of plant-wide disturbances
, JOURNAL OF PROCESS CONTROL, Vol: 18, Pages: 707-719, ISSN: 0959-1524- Author Web Link
- Open Access Link
- Cite
- Citations: 109
-
Journal articleThornhill NF, Patwardhan SC, Shah SL, 2008,
A continuous stirred tank heater simulation model with applications
, JOURNAL OF PROCESS CONTROL, Vol: 18, Pages: 347-360, ISSN: 0959-1524- Author Web Link
- Open Access Link
- Cite
- Citations: 142
-
Journal articleEdwards-Parton S, Thornhill NF, Bracewell DG, et al., 2008,
Principal component score modeling for the rapid description of chromatographic separations
, BIOTECHNOLOGY PROGRESS, Vol: 24, Pages: 202-208, ISSN: 8756-7938- Author Web Link
- Cite
- Citations: 7
-
SoftwareThornhill NF, 2008,
The CSTH Simulation model
This code is a first principles simulation of a continuous stirred tank heater (CSTH) pilot plant at the University of Alberta. The model has heat and mass balance, and a very realistic feature is that instrument, actuator and process non-linearities have been carefully measured. Models in Simulink, supporting Matlab files are available together with experimental noise and disturbance sequences.A full description is given in:Thornhill, N.F., Patwardhan, S.C., and Shah, S.L., 2008, A continuous stirred tank heater simulation model with applications, Journal of Process Control, 18, 347-360.
-
Journal articleBauer M, Cox JW, Caveness MH, et al., 2007,
Nearest neighbors methods for root cause analysis of plantwide disturbances
, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, Vol: 46, Pages: 5977-5984, ISSN: 0888-5885- Author Web Link
- Open Access Link
- Cite
- Citations: 27
-
Journal articleChoudhury MAAS, Kariwala V, Thornhill NF, et al., 2007,
Detection and diagnosis of plant-wide oscillations
, CANADIAN JOURNAL OF CHEMICAL ENGINEERING, Vol: 85, Pages: 208-219, ISSN: 0008-4034- Author Web Link
- Cite
- Citations: 18
-
Journal articleBauer M, Cox JW, Caveness MH, et al., 2007,
Finding the direction of disturbance propagation in a chemical process using transfer entropy
, IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, Vol: 15, Pages: 12-21, ISSN: 1063-6536- Author Web Link
- Open Access Link
- Cite
- Citations: 187
This data is extracted from the Web of Science and reproduced under a licence from Thomson Reuters. You may not copy or re-distribute this data in whole or in part without the written consent of the Science business of Thomson Reuters.