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Politecnico di Torino
Academic Year 2009/10
02BPZDS
Mechatronics
Master of science-level of the Bologna process in Mechanical Engineering - Vercelli
Teacher Status SSD Les Ex Lab Tut Years teaching
Sorli Massimo ORARIO RICEVIMENTO PO ING-IND/13 36 0 20 0 18
SSD CFU Activities Area context
ING-IND/13 5 B - Caratterizzanti Ingegneria meccanica
Objectives of the course
The course discusses topics related with the mechanical ' electronics systems that exist in industrial automation, and it shows some typical applications. The components of standard mechanical servosystems are analysed, with a special attention for sensitising components. Functional and constructive typologies for instruments sensible to physical and mechanical quantities are described, as well as interfaces and power regulation systems. Electric, pneumatic and hydraulic actuation are discussed, considering both the actuator side and the control side.
Expected skills
Interpretation of the requirements for the servosystem; evaluation of static and dynamic performance of a controlled actuation system; critical evaluation of the transduction principles and of the static and dynamic performances of a measurement chain for mechanical quantities.
Prerequisites
Regulation of mechanical systems.
Syllabus
Reminders about regulation of mechanical systems, with a special attention to type zero and type one systems, with first and second order transfer function. Design consideration of the regulation system based on the Bode diagram.
Components of a mechatronic system: sensitisation, interfacing, actuation and control. Design requirements and functional properties. Different kind of actuation: electric, pneumatic, hydraulic; examples of system with controlled actuation.
Static and dynamic characteristics of the instrumentation within a servosystem. Static characteristics: sensitivity, accuracy, linearity, resolution, hysteresis. System identification in time and frequency domain. Time constant, response time, band width.
Mechanical, pneumatic, electric, optical and sound transducers. Resistive, capacitive, inductive, laser, Hall effect, piezoelectric transducers. Digital transducers: encoder, optical linear encoder. Constructive typology of sensors for the detection of mechanical quantities: proximity, position, speed, torque, force, pressure. Functional properties. Performance and comparison. Effect of disturbance and methods to avoid them.
Regulation systems: application of analogue and digital control technique to mechatronic systems. Problems related with the acquisition of analogue signals, A/D and D/A conversion, and digital communication.
Introduction to the interfaces and actuation systems in electric, pneumatic and hydraulic actuation. Examples of application and comparison.
Laboratories and/or exercises
They are forecast laboratory exercises on different test rigs for servosystems as well as simulation exercises in computer lab. Students are divided up in groups, each of them will develop all the practical and simulation exercises. For the final exam, each couple of students will prepare a presentation about the developed activity describing the targets, the methods, the main properties of the used components as well as results obtained in experimentation and simulation with a comparison between numerical and experimental results.
Bibliography
Sorli M., Quaglia G.: 'Meccatronica vol. 1', Politeko, Torino 2003
Sorli M., Quaglia G.: 'Applicazioni di meccatronica', CLUT Editrice Torino, aprile 1996
Jacazio G., Piombo B.: 'Meccanica Applicata alle Macchine, vol. III, Regolazione e servomeccanismi', Levrotto&Bella
Documents provided by the teacher

Other useful texts:

E.O. Doebelin: 'Measurement systems ' Application and Design' McGraw Hill
Shetty D., Kolk R.A., 'Mechatronic systems design', PWS Publishing Company, Boston 1997
Revisions / Exam
The exam is oral and it considers the programs of classes and exercises. The presentation and discussion of the results obtained in the exercises will be evaluated.

Programma definitivo per l'A.A.2009/10
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