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Lecturer(s)
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Mendřický Radomír, doc. Ing. Ph.D.
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Keller Petr, Ing. Ph.D.
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Course content
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1. Introduction to Machinery Automation. Reasons and benefits of automation, trends, energy efficiency. 2. Hard and flexible automation. Definition, differences, categorization of machines, FMS, tool and parts transport. 3. Machine constants. Settings - safety, monitoring, accuracy, compensation. 4. Control Systems. Structure, categories, methods of drive control - interpolation. SW controlling the CNC machine. 5. CNC systems. Coordinate system, reference points, methods for creating NC program, corrections of tools. 6. Measuring Systems. Direct and indirect, incremental and absolute. Signal processing, reference points. 7. Feedback Elements and Measuring Sensors. Principle and function of photoelectric and inductive sensors. 8. Control drives. Principles, functions, execution. Feed drives of tool machines, regulatory properties. 9. Dynamic model of the positional servo-drive. Position, speed and current control. Position deviation, response to a step of speed, reaction to a step of loading force. Speed control. Static and dynamic characteristics. 10. The parameters of servo-drive, which have an impact on the quality of the drive - passband, dynamic stiffness. 11. Dynamic interpolation errors. Linear and circular, types of errors, their compensation, feedforward signals. 12. Construction Principles of Positional Servo-drive design. Optimal gearing, loss of motion. 13. Mechanical layout of the feed drives. The stiffness of mechanical parts, pre-loading connections. 14. Reserve, credit
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Learning activities and teaching methods
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Laboratory work, Lecture, Practicum
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Learning outcomes
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The subject introduces the basics of automation and control of production machines. The main attention is given to positional servomechanisms (principles of execution, interpolation errors, static and dynamic characteristics) and peripheries that enable and influence CNC machine control (measuring elements, control systems, design principles). The design of control loops and verification of principles of position control is also based on computer simulations in SW Matlab - Simulink.
Students will gain knowledge and experience in the field of automation and control of drives of production machines, with a focus on positional servomechanisms. They will get acquainted with individual peripherals, that enable CNC control of the machine (measuring elements, control systems, design principles). Students will learn practical computer simulation in Matlab - Simulink within the design of control loops and verification of principles of position control.
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Prerequisites
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unspecified
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Assessment methods and criteria
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Combined examination, Test
CREDIT - attendance in seminars, successful elaboration of assigned tasks. EXAM - written, if necessary oral
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Recommended literature
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Studijní materiály.
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Study materials.
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Biran, A. What every engineer should know about MATLAB and Simulink. Boca Raton: CRC Press, 2011. ISBN 978-1-4398-1020-0.
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Dušek, F. a D. Honc. Matlab a Simulink: úvod do používání. Pardubice: Univerzita Pardubice, 2005. ISBN 80-7194-776-8.
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Firoozian, R. Servo motors and industrial control theory. Switzerland, 2014. ISBN 978-3-319-33103-4.
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Karban, P. Výpočty a simulace v programech Matlab a Simulink. Brno: Computer Press, 2006. ISBN 80-251-1301-9.
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Kief, Hans B. CNC for industry: by Hans B. Keif. Cincinnati: Hanser Gardner Publications, 2000. ISBN 1-56990-296-8.
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Konami, S. a T. Nishiumi. Hydraulic control systems: theory and practice. New Jersey: World Scientific, 2017. ISBN 978-981-4759-63-2.
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Marek, J. a P. Blecha. Konstrukce CNC obráběcích strojů III. 3 vyd.. Praha: MM publishing, 2014. ISBN 978-80-260-6780-1.
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Marek, J. et al. Design of CNC Machine Tools. Praha, 2015. ISBN 978-80-260-8637-6.
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Skalla, J. Návrh a dimenzování polohových servomechanismů obráběcích strojů [Habilitační práce]. TU Liberec, 1995.
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Souček, P. a A. Bubák. Vysoce dynamické pohony posuvů obráběcích strojů. Praha: Společnost pro obráběcí stroje, 2002. ISBN 80-238-8426-3.
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Souček, P. Pohony výrobních zařízení (Servomechanismy). ČVUT Praha, 1997.
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Souček, P. Servomechanismy ve výrobních strojích. ČVUT, Praha, 2004.
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