Design of a compliant mechanism to amplify the stroke of a piezoelectric stack actuator

Download
2013
Keskin, Tamer
Main objective of this study is to design a compliant mechanism with high frequency and high mechanical amplification ratio to be used for amplifying the stroke of a piezostack actuator. In this thesis, first of all, related literature is investigated and then alternative conceptual designs are established utilizing the mechanisms found in literature survey. Once best conceptual design is selected, detailed design of this mechanism is done. For detailed design of the compliant mechanism, topology optimization method is used in this study. To design the mechanism, first a design domain is defined and then a finite element model of the design domain is prepared to be used in topology optimization runs. After running the topology optimization model by using TOSCA with ANSYS, results are imported to ANSYS, where final performance of the mechanism design is checked. After finalizing design of the mechanism, it is produced and its performance is tested through experiments

Suggestions

Design of a Piezoelectric Ultrasonic Motor for Micro-Robotic Application
Akın, Tayfun; Başaran, Dilek; Erden, Abdülkadir (null; 2002-09-05)
In a piezoelectric ultrasonic motor, exciting at least two orthogonal mechanical vibration modes of the composite stator using single or orthogonal multiple high frequency AC signals generates a mechanical vibration on the stator surface. The rotor is pressed against the stator's surface and a rotation is produced by frictional interaction between the touching stator and rotor surfaces. Piezoelectric ultrasonic motors, which have superior characteristics like; high torque at low speed, frictional locking at...
Fabrication of microfluidic devices for dielectrophoretic and acoustophoretic applications using high precision machining
Soheila, Zenaili; Çetin, Barbaros; Özer, Mehmet Bülent; Süleyman, Büyükkoçak (2014-07-03)
In this study, the fabrication of microfluidic devices for dielectrophoretic and acoustophoretic based applications with high-precision CNC machining has been presented. For both devices, molds out of stainless steel have been fabricated, and polymer molding is implemented. For dielectrophoretic device, the metal electrodes have been fabricated using high-precision machining and embedded into the device during the molding process. For acoustophoretic device, piezoelectric slides have been embedded into the ...
Design of a GaN Based Integrated Modular Motor Drive
Uğur, Mesut; Keysan, Ozan (2018-10-25)
In this study, design procedure of an Integrated Modular Motor Drive (IMMD) is presented focusing on high power density. The design is based on a permanent magnet synchronous motor (PMSM) and GaN FETs. Fractional slot concentrated windings are used on the stator. Slot/pole combination and winding configuration is selected based on having low cogging torque and high winding factor. An extended motor drive inverter topology is proposed where 2-level voltage source inverters are connected both in series and pa...
Design of a multi-frequency underwater transducer using cylindrical piezoelectric elements
Yavuz, Şiar Deniz; İder, Kemal S.; Köymen, Hayrettin; Department of Mechanical Engineering (2011)
In this thesis, numerical and experimental design of a multi-frequency underwater acoustic transducer with cylindrical piezoelectric ceramic tubes is studied. In the numerical design, the acoustic, mechanical and thermal performances of the transducer are investigated by means of finite element method (FEM) in ANSYS. The design of the transducer that meets the acoustic requirements is checked in terms of the mechanical and thermal performances. After the completion of the numerical design, the transducer is...
Design and optimization of high torque density generator for direct drive wind turbine applications
Zeinali, Reza; Ertan, Hulusi Bülent; Department of Electrical and Electronics Engineering (2016)
In this thesis, it is aimed to design a high torque density generator for a variable speed, direct drive wind turbine application. Such a generator may reduce the size of the turbine tower and the nacelle and may provide cost advantage. For this purpose, various topologies of the permanent magnet machines in the literature are reviewed. Among the reviewed electrical machines, a magnetically geared machine introduced as a concept with high torque density and high power factor is chosen to be evaluated for th...
Citation Formats
T. Keskin, “Design of a compliant mechanism to amplify the stroke of a piezoelectric stack actuator,” M.S. - Master of Science, Middle East Technical University, 2013.