CV Paul Krot - Mechanical and Control Engineer

PAVEL V. KROT Age: 44 years (13 July 1966) Address: Dnepropetrovsk, Ukraine (country of residence) Phones: +38 (056) 776-84-40 (office)

+38 (056) 770-19-71 (home) +38 (063) 242-39-60 (mobile)

E-mail: [email protected] Skype: pvk_digger ICQ: 381881099

GENERAL INFORMATION Specialist in Mechanical and Control engineering with many successfully fulfilled and managed industrial and academic projects related to heavy machinery failures diagnostics, dynamics analysis, modernization planning and maintenance scheduling. Wide area of expertise covers metallurgical technologies (rolling mills), wood processing and ore concentration. Own business experience helps to see commercial benefits and possible restrictions of projects. Personnel management and customer communication skill allows solving many problems and speeding up the time to market of technical and business ideas.

PROFESSIONAL AND RESEARCH EXPERIENCE

2001 – Present Researcher and Sr. Researcher of the Rolling Mills Department, Iron and Steel Institute, National Academy of Science of Ukraine, Dnepropetrovsk. Project manager of the large scale industrial and theoretical R&D projects related to the rolling mills and other heavy mechanical equipment structural dynamics analysis, control, optimal design, vibration and loads field measurements, diagnostics and maintenance. Senior students mentoring in mechanics and control from the Dnepropetrovsk National University and the National Metallurgical Academy.

1994 – 2001 Director and founder of the R&D Company EXEL Ltd., Dnepropetrovsk, Ukraine.

Mechanical equipment design, maintenance, sensors and control systems development for the different industries including ore grinding, wood processing and rolling mills. Personally fulfilled design and construction management of wood drying chamber from idea to industrial implementation, technology provided the best available quality of wood (residual stresses).

1992 – 1994 Lecturing as a Teaching Assistant, Informatics and Automated Control Systems

Department, Dnepropetrovsk National University, Ukraine. The new lecture course was prepared in the industrial systems simulation with an emphasis on the active methods of identification (design of experiments), statistics, output prediction, and signals processing with control methods design. The lectures and practical lessons were carried out. Senior students’ projects were supervised.

EDUCATION

1989 – 1992 PhD study on "Mathematical simulation in the scientific research", Informatics and Automated Systems Department, Dnepropetrovsk National University, Ukraine. Thesis "Mathematical simulation of the mechanical energy transferring from the sources to the working tools by friction in the rolling mills" was defended in the Institute of Problems of Simulation in Energetics, National Academy of Science of Ukraine, Kiev, 1996. Supervisor: Dr. of Science, Prof. Alexander N. Maryuta. Still unresolved in the world problem of rolling mills chatter vibrations was theorized and experimentally investigated in the industrial temper mill. The new nonlinear model of friction-induced vibration was developed for system dynamics identification. Software with data base were developed for multi-stand mill control and diagnostics, allowing the thin strips periodical defects (chatter marks) prediction and elimination (4 publications and 5 conference reports).

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2 1983 – 1989 Study in Control Systems Engineering, Physics and Technics Department,

Dnepropetrovsk National University, Ukraine. Final diploma "The systolic arrays (cellular automata) simulation software and the parallel processor hardware design for the dynamic objects control" was defended in English with honor (2 publications, 2 conference reports and 1 patent).

1987 – 1989 Optional course of English Technical Translation, Philological Department, Dnepropetrovsk National University, Ukraine. Certificate of Technical Translator was graduated with honor.

COMPUTER AND OTHER SKILLS Operation systems: DOS, Windows XP. Programming: FORTRAN, Pascal, DBASE, MS Visual Basic, Borland C++ Builder. PC software: MathCAD, MATLAB, AutoCAD, Windows Office. Measurements: Measuring devices: accelerometers, torque telemetry, optical sensors. Research methods: Modal analysis, dynamic models identification, numerical solving of nonlinear

differential equations, spectral and correlation analysis, statistics, design of experiments technique, control systems theory, signal filtering and processing.

Languages: English (fluent), Russian and Ukrainian (native).

INDUSTRIAL PROJECTS

1. 1991-1993 Process identification and model based control of the ore grinding mills. Technology multi-input-multi-output spectral and correlation analysis was applied for identification of the infra-low frequency mechanical oscillations in the ore mills. The on-line model based control was provided for ore treating efficiency increasing.

2. 1994-1995 Monitoring system design for ore grinding technology and equipment. The algorithms and software were designed for plant data on-line processing. The convenient user graphic interface was developed for mill maintenance staff. Hardware interface between the mainframe and personal computer was provided.

3. 1996-2000 Design and construction of a wood drying chamber. Large scale industrial wood drying chamber and heating generator for waste wood utilization were developed and constructed. Technology was improved to obtain low residual stress in wood. All design and partly assembling had been done personally.

4. 2000-2001 The dynamic loads research in the main drivelines of 1150 slabbing mill and methods development for its reduction. The parametric oscillations and resonance were discovered due to teeth couplings stiffness variation in the vertical gearbox under certain working speeds. Optimal speed range and parallel electric drives control method were proposed for vibration and dynamics loads reduction.

5. 2001-2002 Technical condition estimation of the universal spindles and gearboxes in the roughing stands of the 1680 tandem hot rolling mill based on vibration and structural dynamics analysis. Stress waves and pulse impacts are investigated in the drivelines during the transient processes. Spindle’s weight balancing unit tuning and wear diagnostics methods were proposed.

6. 2002-2003 Research and industrial application of the methods for backlashes influence reduction in the roughing stands of a 1680 hot rolling mill. Optimal control was designed for the backlashes gaps elimination in the geared drivelines. Control method was proposed with taking into account geared drivelines design, universal joints wear and spindle balancing unit tuning. Software and data bases were developed for mill maintenance information handling.

7. 2003-2004 Development the methods and algorithms for mechanical loads monitoring in the main drivelines of the roughing stands in the 1680 hot rolling mill. The adaptive models were developed for a nonlinear multi-body system simulation and dynamical loads prediction based on data about mechanical equipment wear and static loads. The software and specification of the automated monitoring system were developed for customer.

8. 2004-2005 Improving technology and increasing operational speed of the continuous cold rolling of strips in the 2030 mill with the aid of vibration monitoring system. Software and hardware were developed and installed in the 5-stand tandem rolling mill. Vibration monitoring system commissioned.



3 9. 2005-2006 Research and development of the new technical approaches for resonance

vibration reduction in the 2030 mill and strip surface quality improving by the vibration control system and stands roll stack and drivelines diagnostics. Software was designed for chatter vibration early recognition and system structural dynamics analysis. The on-line control methods were designed for tandem mill safety operation by the vibration signals. Work rolls bearings and drivelines diagnostics methods were proposed.

10. 2006-2007 Research and application of the new technology and rolling speed schedule, methods of the chatter vibration control and periodic defects diagnostics for productivity increasing of 2030 tandem mill. Strip quality was improved (chatter marks avoided) and mill productivity was increased by 7-10% due to new control methods providing impacts of small amplitude. It was also carried out vibration measurements in the grinding machines and chatter marks were avoided on the backup rolls. The damping polymer pads were designed and implemented for mill vibration suppression.

11. 2007 Research and optimal modernization plan development of the rolling mills division in the non-ferrous metallurgical plant. Three cold rolling mills were audited with their mechanical equipment, control systems and measuring sensors and optimal plan for their modernization was proposed to achieve the highest quality of rolled strips with minimal expenditures. Existing technology restrictions were taken into account in the neighboring annealing divisions.

12. 2008 Analysis of tender propositions for reversing cold rolling mill supply. The modernization projects proposed by the several world known companies from the Japan and Europe were considered and possible restrictions were discovered for their rolling mills implementation into existing rolling technology of customer’s plant.

ACADEMIC PROJECTS

13. 2002-2004 Theoretical research and development methods for the rolling mills equipment vibration diagnostics using the transient processes. The new methods were developed for rolling mills mechanical equipment diagnostics by the vibration and transient torque monitoring. Bearings and other elements diagnostics methods were successfully tested in industrial mill.

14. 2005 Development the methods for rolling mills structural dynamics analysis and stochastic loads calculation in the nonlinear mechanical systems. The analytical methods were developed for stochastic loads calculation with taking into account mechanical equipment wear, technology and design parameters.

15. 2006 Development methods for early recognition and prevention of chatter vibration in the rolling mills. The new methods were developed for chatter early recognition based on synchronization phenomenon by the strip tension oscillations in the multi-stand rolling mills. Method for mill optimal control and chatter prevention was developed and implemented in industrial mill.

16. 2007-2009 Development a telemetry torque measuring device and methods for rolling mills wear diagnostics. The telemetry devices were developed based on the microcontrollers and digital radio transceivers for torque measuring and hand-held device is designed for rolling mills wear (angular backlashes) measurement.

17. 2008-2010 Development of the dynamic model of a high speed wire and rod reducing sizing mill. Dynamic model was developed of the geared driveline with the switching clutches of the high speed Reducing Sizing Mill (RSM Morgan) and the torsional vibrations influence on wire geometry were investigated.

18. 2010 Investigation of the steel severe plastic deformation (SPD) and its development for the industrial rolling mills. Different SPD schemes are under investigation in order to obtain ultra fine grained (UFG) nano-structured metals in industrial rolling mills including deep cryogenic treatment (DTC) of steel.

REVIEWER IN INTERNATIONAL JOURNALS

ASME Journal of Dynamic Systems, Measurement and Control. IEEE Conference on Decision and Control CDC-2009.



4 POSSIBLE AREAS OF WORK ü Machines design, modernization, diagnostics and predictive maintenance ü Machines dynamics reduction by modal analysis ü Multi-channel monitoring and control systems development and implementation ü Measurement sensors instrumentation, electrical engineering and software design ü Vibration, torques and any other parameters monitoring ü Signals analysis and stochastic loads estimation for durability and strength capacity calculation ü Active vibrations damping and control both torsional and linear ü Smart materials implementation for vibration damping in the highly loaded machines ü Design of technologies and equipment for nano and ultra fine grained steel production ü Deep cryogenic treatment of high carbon and alloyed steels for wear resistance increasing

PERSONAL FEATURES ü Strong motivation to obtain both practical and scientific results ASAP ü Hard working with the heavy machines under the time limiting conditions ü Easy accommodation to new objects and any environment ü Tolerance with colleagues in any command and with administrative staff ü Easy communication with the industrial customers’ personnel at all levels ü Ready to work as a project manager (5-10 people) so as a member of team ü Quite ready for long traveling and studying of foreign languages ü Without harmful habits (alcohol, drugs, smoking), sportive

REFEREES

Peter Brandenfels Project Manager, Computations and Structural Analysis. SMS Siemag AG. Wiesenstrasse 30 D-57271 Hilchenbach, Germany. Phone: +49 (0) 2733 29 1032 E-Mail: [email protected]

Dr. Stefan Fuchshumer Project manager, Research and Development.

Voestalpine Mechatronics GmbH. Voestalpine str. 3, a-4031 Linz, Austria. Phone: +43 732 6585 3493. E-mail: [email protected]

PATENTS 1. Homogeneous computing structure for processing of three- dimensional matrices

Patent SU1702359 A1. USSR. A.L. Belous, P.V. Krot. 03.10.1989. 2. Diagnosis methods of wear of elements of transmissions of rolling stands.

Patent UA79859. Ukraine. P.V. Krot et al. 19.09.2005. 3. Method for diagnosing the bearings of the drive mechanism shaft of a rolling mill.

Patent UA79681. Ukraine. P.V. Krot et al. 19.09.2005. 4. Method for monitoring fluctuations of load on the drive mechanism of a rolling mill.

Patent UA79682. Ukraine. P.V. Krot et al. 19.09.2005. 5. Method of diagnosing of sympathetic vibration and control of multi-stand cold rolling mill and

device for implementation of diagnosing. Patent RU2338609. Russia. P.V. Krot et al. 09.01.2007.

SCIENTIFIC REPORTS IN THE INTERNATIONAL CONFERENCES 1. 1st Int. Symp. “Multi-Body Dynamics: Monitoring & Simulation Techniques”, 1997, Univ. of Bradford, UK. 2. International Conference “Vibration in the rolling mills”. Inst. of Mat., Minerals and Mining, 2006, London 3. 4th, 5th, 6th, 7th International Rolling Congresses, 2001, 2003, 2005, 2007, Russia. 4. 6th EUROMECH Nonlinear Dynamics Conference (ENOC 2008), St. Petersburg, Russia. 5. 36th Int. Conference «Advanced Problems in Mechanics» (APM 2008), St. Petersburg, Russia. 6. 4th European Conference on Structural Control (ECSC 2008), St. Petersburg, Russia. 7. 3rd IEEE Multi-conference on Systems and Control (MSC2009), St. Petersburg, Russia. 8. IUTAM Symp. on the Vibration Analysis of Structures with Uncertainties. 2009, St. Petersburg, Russia. 9. 3rd Int. Conference on Nonlinear Dynamic (ND-KhPI 2010), Kharkov, Ukraine.



5 LIST OF MAIN PUBLICATIONS AND CONFERENCE PROCEEDINGS In English language 1. A.N. Marjuta, P.V. Krot. High frequency rolling mills chatter – mathematical identification and simulation.

1st International Symposium on “Multi-Body Dynamics Monitoring and Simulation Techniques (COMADEM 1997)”. University of Bradford. UK. March 25-27, 1997, pp. 407-419.

2. P.V. Krot. Software aids cold rolling. High-Tech Materials Alert. Advanced Materials: their uses and manufacture, 1998, Vol. 14, No. 3, p. 12.

3. I.Y. Prihodko, P.V. Krot, et al. Vibration monitoring system and the new methods of chatter early diagnostics for tandem mill control. International Conference “Vibration in the rolling mills”. Institute of Materials, Minerals and Mining, November 9-11, 2006, London, pp. 87-106.

4. P.V. Krot. Nonlinear Vibrations and backlashes diagnostics in the rolling mills drive trains. 6th EUROMECH Nonlinear Dynamics Conf. (ENOC 2008), June 30 – July 4, 2008, St. Petersburg, Russia, pp. 360-366.

5. P.V. Krot. Chatter vibrations in the high speed cold rolling mills. 36th Int. Summer School – Conference «Advanced Problems in Mechanics» (APM 2008), July 6-10, 2008, St. Petersburg, Russia, pp. 44-45.

6. P.V. Krot, et al. Regenerative chatter vibrations control in the tandem cold rolling mills. 4th European Conference on Structural Control (ECSC 2008). Sep. 8-12, 2008, St. Petersburg, Russia, pp. 428-437.

7. P.V. Krot. Transient torsional vibrations control in the geared drive trains of the hot rolling mills. 3rd IEEE Multi-Conf. on Systems and Control (MSC 2009). July 8–10, 2009, St. Petersburg, Russia, pp. 1368-1373.

8. P.V. Krot. Statistical Dynamics of the Rolling Mills. IUTAM 2009 Symp. on the Vibration Analysis of Structures with Uncertainties. July 6–10, 2009, St. Petersburg. IUTAM Bookseries, 2011, Vol. 27, Part 4, 429-442.

9. P.V. Krot. Hot rolling mill drive train dynamics: torsional vibration control and backlash diagnostics. Millennium Steel Annual. China Edition. 2009. pp. 91-95 (in Chinese).

10. P.V. Krot. Dynamics and diagnostics of the rolling mills drivelines with non-smooth stiffness characteristics. Proc. of the 3rd Int. Conference on Nonlinear Dynamic, ND-KhPI2010, Sep. 21-24, 2010, Kharkov, Ukraine. pp. 115-120.

In Russian language 11. P.V. Krot. Parametrical oscillations in the rolling mills. Proc. of the Dnepropetrovsk National Mining

Academy, 2001, No 13, vol. 3, pp. 15-21. 12. P.V. Krot et al. Experimental research and industrial testing of the methods for dynamics loading reduction

in the geared drive trains of the mill 1680 roughing stands. 5th Int. Rolling Congress, October 21-23, 2003, Cherepovets, Russia, pp. 523-529.

13. P.V. Krot et al. System of mechanical loads monitoring for hot rolling mill 1680 by the electrical drive current. Proc. of the Dnepropetrovsk National Mining Academy, 2004, No 19, vol. 5, pp. 71-76.

14. P.V. Krot et al. The vibration monitoring and diagnostics systems for the cold rolling mills. Vibration of Machines. Scientific Journal, Donetsk National Technical University, 2005, No 1, pp. 17-20.

15. P.V. Krot. The problems of rolling mills equipment maintenance. Fundamental and applied problems of metallurgy. Proc. of the Iron and Steel Institute of Ukraine, 2005, No 10, pp. 126-138.

16. P.V. Krot et al. Automated diagnostics and monitoring systems for the plate rolling mills. 13th annual International conference «Modern methods and apparatus for nondestructive control and technical diagnostics", October 3-7, 2005, Yalta, Ukraine, pp. 167-169.

17. P.V. Krot. Digital telemetry device for shafts torsional vibration measurements on the basis of microcontrollers and the methods of wear diagnostics in the rolling mills equipment. 8th International Conference «Fundamental and applied problems of reliability and diagnostics of machines and mechanisms», October 22-27, 2007, St. Petersburg, Russia, pp. 256-258.

18. P.V. Krot. Methods and devices for wear measurement in the rolling mills drive trains. Metallurgical processes and equipment. 2008, No 2(12), pp. 45-53.

19. P.V. Krot et al. Dynamics and diagnostics of the wire rolling mills. Vibration of Machines. Scientific Journal, Donetsk National Technical University. 2009, No 3(18), pp. 32-41.

20. P.V. Krot et al. Active control of the torsional oscillations and chatter vibrations in the rolling mills. Vibration of Machines. Scientific Journal, Donetsk National Technical University. 2009, No 3(18), pp.41-58.

21. P.V. Krot. Dynamical processes in a split path geared drive of a slabbing mill. Problems of the mechanical drive. Proc. of the Kharkov Polytechnic Inst. 2009, vol. 19. pp. 96-105.

22. P.V. Krot. Torsional vibration investigation in the geared drive trains of the rolling mills. 8th International Conference «Fundamental and applied problems of reliability and diagnostics of machines and mechanisms», October 25-27, 2009, St. Petersburg, Russia, pp. 120-125.

23. I.Y. Prikhodko, P.V. Krot. Actual areas of the cryogenic technologies application in the rolled strip production. Metallurgical Processes and Technologies, 2009, No 1, pp 10-16.

Full list of publications in Russian language (70) is available on demand.



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CV Paul Krot - Mechanical and Control Engineer