Abstract
Background: Demands for Precise positioning systems are dramatically increasing in various fields. So, it is crucial to find and address their issues in order to improve their performances. In this regard, scholars have tried to detect the challenges with which these systems are faced. Some most important problems introduced by scholars are short stroke, low dexterity, complicated structure, lack of compact size, low output force, low response, low resolution, etc.
Methods: This paper presents an XY precision positioning system that the Impact Drive Mechanism (IDM) is used as the positioning system itself. This system is designed based on microscale steps of IDM whose Piezoelectric Actuator (PEA) is driven by saw-tooth shaped voltage pulses. Although IDM can solve aforementioned problems, it has nonlinear equations which may make a big challenge in its control. Therefore, this study also presents a fuzzy controller that is capable to work well in such complex systems. Using fuzzy controllers is very useful in this application, but it requires more computation time and cost. Thus, a square root controller is proposed in order to reduce them.
Results: Results show that although the square root controller gives the same result, it needs less computation time and cost than the fuzzy controller does.
Conclusion: In conclusion, in this new design of the positioner, using a square root controller is more efficient and economical than the fuzzy one.
Keywords: Fuzzy controller, impact drive mechanism, saw-tooth signal, square root controller, stick-slip based actuator, twodimensional positioning.
Recent Patents on Mechanical Engineering
Title:Design and Control of an XY Precision Positioning System Using Impact Drive Mechanism
Volume: 14 Issue: 4
Author(s): Ali Abdi*
Affiliation:
- Department of Mechanical Engineering, University of Tehran, Tehran,Iran
Keywords: Fuzzy controller, impact drive mechanism, saw-tooth signal, square root controller, stick-slip based actuator, twodimensional positioning.
Abstract:
Background: Demands for Precise positioning systems are dramatically increasing in various fields. So, it is crucial to find and address their issues in order to improve their performances. In this regard, scholars have tried to detect the challenges with which these systems are faced. Some most important problems introduced by scholars are short stroke, low dexterity, complicated structure, lack of compact size, low output force, low response, low resolution, etc.
Methods: This paper presents an XY precision positioning system that the Impact Drive Mechanism (IDM) is used as the positioning system itself. This system is designed based on microscale steps of IDM whose Piezoelectric Actuator (PEA) is driven by saw-tooth shaped voltage pulses. Although IDM can solve aforementioned problems, it has nonlinear equations which may make a big challenge in its control. Therefore, this study also presents a fuzzy controller that is capable to work well in such complex systems. Using fuzzy controllers is very useful in this application, but it requires more computation time and cost. Thus, a square root controller is proposed in order to reduce them.
Results: Results show that although the square root controller gives the same result, it needs less computation time and cost than the fuzzy controller does.
Conclusion: In conclusion, in this new design of the positioner, using a square root controller is more efficient and economical than the fuzzy one.
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Cite this article as:
Abdi Ali *, Design and Control of an XY Precision Positioning System Using Impact Drive Mechanism, Recent Patents on Mechanical Engineering 2021; 14 (4) . https://dx.doi.org/10.2174/2212797614666210129150320
DOI https://dx.doi.org/10.2174/2212797614666210129150320 |
Print ISSN 2212-7976 |
Publisher Name Bentham Science Publisher |
Online ISSN 1874-477X |
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