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Article: Closed-loop optimal control-enabled piezoelectric microforce sensors

TitleClosed-loop optimal control-enabled piezoelectric microforce sensors
Authors
KeywordsOptimal control
Microrobotics
Actuator
Force balance
Force sensor
Microautomation
Polyvinylidene fluoride (PVDF)
Issue Date2006
Citation
IEEE/ASME Transactions on Mechatronics, 2006, v. 11, n. 4, p. 420-427 How to Cite?
AbstractThis paper presents a closed-loop optimally controlled force-sensing technology with applications in both micromanipulation and microassembly. The microforce-sensing technology in this paper is based on a cantilevered composite beam structure with embedded piezoelectric polyvinylidene fluoride (PVDF) actuating and sensing layers. In this type of sensor, the application of an external load causes deformation within the PVDF sensing layer. This generates a signal that is fed through a linear quadratic regulator (LQR) optimal servoed controller to the PVDF actuating layer. This in turn generates a balancing force to counteract the externally applied load. As a result, a closed feedback loop is formed, which causes the tip of this highly sensitive sensor to remain in its equilibrium position, even in the presence of dynamically applied external loads. The sensor's stiffness is virtually improved as a result of the equilibrium position whenever the control loop is active, thereby enabling accurate motion control of the sensor tip for fine micromanipulation and microassembly. Furthermore, the applied force can be determined in real time through measurement of the balance force. © 2006 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/212908
ISSN
2015 Impact Factor: 3.851
2015 SCImago Journal Rankings: 2.305

 

DC FieldValueLanguage
dc.contributor.authorShen, Yantao-
dc.contributor.authorWinder, Eric-
dc.contributor.authorXi, Ning-
dc.contributor.authorPomeroy, Craig A.-
dc.contributor.authorWejinya, Uchechukwu C.-
dc.date.accessioned2015-07-28T04:05:24Z-
dc.date.available2015-07-28T04:05:24Z-
dc.date.issued2006-
dc.identifier.citationIEEE/ASME Transactions on Mechatronics, 2006, v. 11, n. 4, p. 420-427-
dc.identifier.issn1083-4435-
dc.identifier.urihttp://hdl.handle.net/10722/212908-
dc.description.abstractThis paper presents a closed-loop optimally controlled force-sensing technology with applications in both micromanipulation and microassembly. The microforce-sensing technology in this paper is based on a cantilevered composite beam structure with embedded piezoelectric polyvinylidene fluoride (PVDF) actuating and sensing layers. In this type of sensor, the application of an external load causes deformation within the PVDF sensing layer. This generates a signal that is fed through a linear quadratic regulator (LQR) optimal servoed controller to the PVDF actuating layer. This in turn generates a balancing force to counteract the externally applied load. As a result, a closed feedback loop is formed, which causes the tip of this highly sensitive sensor to remain in its equilibrium position, even in the presence of dynamically applied external loads. The sensor's stiffness is virtually improved as a result of the equilibrium position whenever the control loop is active, thereby enabling accurate motion control of the sensor tip for fine micromanipulation and microassembly. Furthermore, the applied force can be determined in real time through measurement of the balance force. © 2006 IEEE.-
dc.languageeng-
dc.relation.ispartofIEEE/ASME Transactions on Mechatronics-
dc.subjectOptimal control-
dc.subjectMicrorobotics-
dc.subjectActuator-
dc.subjectForce balance-
dc.subjectForce sensor-
dc.subjectMicroautomation-
dc.subjectPolyvinylidene fluoride (PVDF)-
dc.titleClosed-loop optimal control-enabled piezoelectric microforce sensors-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1109/TMECH.2006.878555-
dc.identifier.scopuseid_2-s2.0-33947128082-
dc.identifier.volume11-
dc.identifier.issue4-
dc.identifier.spage420-
dc.identifier.epage427-

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