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Journal Articles

Optimal Design of a Stable Fuzzy Controller for Beyond Pull-In Stabilization of Electrostatically Actuated Circular Microplates

Mohsen Bakhtiari-Shahri, Hamid Moeenfard
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research-Article
J. Vib. Acoust. February 2019, 141(1): 011019.
Paper No: VIB-17-1394
https://doi.org/10.1115/1.4041399
Published Online: October 8, 2018
View Article titled, Optimal Design of a Stable Fuzzy Controller for Beyond Pull-In Stabilization of Electrostatically Actuated Circular Microplates
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Topics: Control equipment, Design, Microplates
Includes: Supplementary data
Proceedings Papers

Deflection Control of Electrostatically Actuated Micro Cantilevers via Fuzzy Controller

Mohammad Khadembashi, Hamid Moeenfard, Amir H. Ghasemi
Proc. ASME. DSCC2016, Volume 1: Advances in Control Design Methods, Nonlinear and Optimal Control, Robotics, and Wind Energy Systems; Aerospace Applications; Assistive and Rehabilitation Robotics; Assistive Robotics; Battery and Oil and Gas Systems; Bioengineering Applications; Biomedical and Neural Systems Modeling, Diagnostics and Healthcare; Control and Monitoring of Vibratory Systems; Diagnostics and Detection; Energy Harvesting; Estimation and Identification; Fuel Cells/Energy Storage; Intelligent Transportation, V001T01A010, October 12–14, 2016
Publisher: American Society of Mechanical Engineers
Paper No: DSCC2016-9838
https://doi.org/10.1115/DSCC2016-9838
View Paper titled, Deflection Control of Electrostatically Actuated Micro Cantilevers via Fuzzy Controller
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Topics: Control equipment, Deflection, Microcantilevers, Microbeams, Closed loop systems, Differential equations, Engineering simulation, Passive control, Regulations, Simulation
Proceedings Papers

A Two-Level Adaptive Fuzzy Control Algorithm for Beyond Pull-In Stabilization of Electrostatically Actuated Microplates

Moeen Radgolchin, Hamid Moeenfard, Amir H. Ghasemi
Proc. ASME. DSCC2016, Volume 2: Mechatronics; Mechatronics and Controls in Advanced Manufacturing; Modeling and Control of Automotive Systems and Combustion Engines; Modeling and Validation; Motion and Vibration Control Applications; Multi-Agent and Networked Systems; Path Planning and Motion Control; Robot Manipulators; Sensors and Actuators; Tracking Control Systems; Uncertain Systems and Robustness; Unmanned, Ground and Surface Robotics; Vehicle Dynamic Controls; Vehicle Dynamics and Traffic Control, V002T17A008, October 12–14, 2016
Publisher: American Society of Mechanical Engineers
Paper No: DSCC2016-9841
https://doi.org/10.1115/DSCC2016-9841
View Paper titled, A Two-Level Adaptive Fuzzy Control Algorithm for Beyond Pull-In Stabilization of Electrostatically Actuated Microplates
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Topics: Algorithms, Fuzzy control, Microplates, Control equipment, Deflection, Actuators, Approximation, Closed loop systems, Differential equations, Engineering simulation
Proceedings Papers

Nonlinear Coupled Transverse and Axial Vibration of Variable Cross-Section Beam Flexures Interconnecting Rigid Body

Hasan Malaeke, Hamid Moeenfard, Amir H. Ghasemi
Proc. ASME. DSCC2016, Volume 1: Advances in Control Design Methods, Nonlinear and Optimal Control, Robotics, and Wind Energy Systems; Aerospace Applications; Assistive and Rehabilitation Robotics; Assistive Robotics; Battery and Oil and Gas Systems; Bioengineering Applications; Biomedical and Neural Systems Modeling, Diagnostics and Healthcare; Control and Monitoring of Vibratory Systems; Diagnostics and Detection; Energy Harvesting; Estimation and Identification; Fuel Cells/Energy Storage; Intelligent Transportation, V001T11A006, October 12–14, 2016
Publisher: American Society of Mechanical Engineers
Paper No: DSCC2016-9881
https://doi.org/10.1115/DSCC2016-9881
View Paper titled, Nonlinear Coupled Transverse and Axial Vibration of Variable Cross-Section Beam Flexures Interconnecting Rigid Body
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Topics: Approximation, Boundary-value problems, Design, Differential equations, Displacement, Flexure mechanisms, Hamilton's principle, Modeling, Nonlinear vibration, Optimization
Journal Articles

Modeling Geometric Nonlinearities in the Free Vibration of a Planar Beam Flexure With a Tip Mass

Hamid Moeenfard, Shorya Awtar
Journal: Journal of Mechanical Design
Publisher: ASME
Article Type: Technical Briefs
J. Mech. Des. April 2014, 136(4): 044502.
Paper No: MD-12-1432
https://doi.org/10.1115/1.4026147
Published Online: February 26, 2014
View Article titled, Modeling Geometric Nonlinearities in the Free Vibration of a Planar Beam Flexure With a Tip Mass
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Topics: Bending (Stress), Displacement, Dynamics (Mechanics), Free vibrations, Modeling, Resonance, Vibration, Flexure mechanisms, Design, Approximation
Proceedings Papers

Nonlinear Analysis of Pull-In Voltage for a Fully Clamped Microplate With Movable Base

Ali Karimzade, Hamid Moeenfard, Mohammad Taghi Ahmadian
Proc. ASME. IMECE2012, Volume 10: Emerging Technologies and Topics; Public Policy, 71-75, November 9–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2012-89285
https://doi.org/10.1115/IMECE2012-89285
View Paper titled, Nonlinear Analysis of Pull-In Voltage for a Fully Clamped Microplate With Movable Base
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Topics: Microelectromechanical systems, Microplates, Actuators, Cantilever beams, Compression, Deflection, Galerkin method, Nonlinear differential equations, Plates (structures), Potential energy
Proceedings Papers

Static Pull-In Analysis of Micro-Cantilevers in Wet Etching Fabrication Process

Ali Darvishian, Hamid Moeenfard, Mohammad Taghi Ahmadian
Proc. ASME. IMECE2012, Volume 9: Micro- and Nano-Systems Engineering and Packaging, Parts A and B, 347-350, November 9–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2012-89237
https://doi.org/10.1115/IMECE2012-89237
View Paper titled, Static Pull-In Analysis of Micro-Cantilevers in Wet Etching Fabrication Process
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Topics: Chemical etching, Manufacturing, Microcantilevers
Proceedings Papers

Influence of Fringing Field Effect on the Pull-In of Size Dependent Micro-Beams

Ali Darvishian, Hamid Moeenfard, Mohammad Taghi Ahmadian
Proc. ASME. IMECE2012, Volume 9: Micro- and Nano-Systems Engineering and Packaging, Parts A and B, 577-580, November 9–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2012-89238
https://doi.org/10.1115/IMECE2012-89238
View Paper titled, Influence of Fringing Field Effect on the Pull-In of Size Dependent Micro-Beams
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Topics: Microbeams, Strain gradient
Proceedings Papers

Characterization of Static Behavior of Electrostatically Actuated Micro Tweezers Using Modified Couple Stress Theory

Ali Darvishian, Hamid Moeenfard, Nasser Ghaderi, Mohammad Taghi Ahmadian
Proc. ASME. IMECE2012, Volume 9: Micro- and Nano-Systems Engineering and Packaging, Parts A and B, 581-585, November 9–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2012-89239
https://doi.org/10.1115/IMECE2012-89239
View Paper titled, Characterization of Static Behavior of Electrostatically Actuated Micro Tweezers Using Modified Couple Stress Theory
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Topics: Stress
Proceedings Papers

Modeling Geometric Non-Linearities in the Free Vibration of a Planar Beam Flexure With a Tip Mass

Hamid Moeenfard, Shorya Awtar
Proc. ASME. IDETC-CIE2012, Volume 4: 36th Mechanisms and Robotics Conference, Parts A and B, 363-371, August 12–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: DETC2012-71498
https://doi.org/10.1115/DETC2012-71498
View Paper titled, Modeling Geometric Non-Linearities in the Free Vibration of a Planar Beam Flexure With a Tip Mass
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Topics: Approximation, Bending (Stress), Boundary-value problems, Cantilever beams, Deflection, Differential equations, Flexure mechanisms, Free vibrations, Modeling, Nonlinear dynamics
Proceedings Papers

Coupled Bending and Torsion Effects on the Squeezed Film Air Damping in Torsional Micromirrors

Hamid Moeenfard, Farzaneh Kaji, Mohammad Taghi Ahmadian
Proc. ASME. IDETC-CIE2012, Volume 5: 6th International Conference on Micro- and Nanosystems; 17th Design for Manufacturing and the Life Cycle Conference, 49-55, August 12–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: DETC2012-70114
https://doi.org/10.1115/DETC2012-70114
View Paper titled, Coupled Bending and Torsion Effects on the Squeezed Film Air Damping in Torsional Micromirrors
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Topics: Damping, Torsion, Mirrors, Torque, Microbeams, Modeling, Pressure, Rotation
Proceedings Papers

A Coupled Two Degree of Freedom Model for Nano/Micromirrors Under van der Waals Force

Hamid Moeenfard, Ali Darvishian, Mohammad Taghi Ahmadian
Proc. ASME. IDETC-CIE2012, Volume 5: 6th International Conference on Micro- and Nanosystems; 17th Design for Manufacturing and the Life Cycle Conference, 145-150, August 12–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: DETC2012-70671
https://doi.org/10.1115/DETC2012-70671
View Paper titled, A Coupled Two Degree of Freedom Model for Nano/Micromirrors Under van der Waals Force
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Topics: Degrees of freedom, Van der Waals forces, Torsion, Stiffness, Equilibrium (Physics), Deflection, Design, Potential energy, Rotation, Theorems (Mathematics)
Proceedings Papers

Analytical Solutions for the Static Instability of Micro/Nano Mirrors Under the Combined Effect of Capillary Force and Casimir Force

Hamid Moeenfard, Ali Darvishian, Mohammad Taghi Ahmadian
Proc. ASME. IMECE2011, Volume 11: Nano and Micro Materials, Devices and Systems; Microsystems Integration, 463-469, November 11–17, 2011
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2011-63108
https://doi.org/10.1115/IMECE2011-63108
View Paper titled, Analytical Solutions for the Static Instability of Micro/Nano Mirrors Under the Combined Effect of Capillary Force and Casimir Force
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Topics: Casimir force, Electromagnetic weapons, Mirrors
Proceedings Papers

Closed Form Solutions for Electrostatically Actuated Micromirrors Considering the Bending Effect

Hamid Moeenfard, Mohammad Taghi Ahmadian, Hosein Moeenfard
Proc. ASME. IMECE2011, Volume 11: Nano and Micro Materials, Devices and Systems; Microsystems Integration, 897-902, November 11–17, 2011
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2011-65726
https://doi.org/10.1115/IMECE2011-65726
View Paper titled, Closed Form Solutions for Electrostatically Actuated Micromirrors Considering the Bending Effect
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Topics: Computer simulation, Displacement, Electromagnetic weapons, Equilibrium (Physics), Microactuators, Mirrors, Stability, Theorems (Mathematics), Torsion
Proceedings Papers

Closed Form Solutions for the Statical Behavior of Micromirrors Under Capillary Forces

Hamid Moeenfard, Ali Darvishian, Mohammad Taghi Ahmadian
Proc. ASME. IMECE2011, Volume 11: Nano and Micro Materials, Devices and Systems; Microsystems Integration, 131-137, November 11–17, 2011
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2011-63091
https://doi.org/10.1115/IMECE2011-63091
View Paper titled, Closed Form Solutions for the Statical Behavior of Micromirrors Under Capillary Forces
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Topics: Design, Electromagnetic weapons, Equilibrium (Physics), Manufacturing, Newton's method, Potential energy, Rotation
Proceedings Papers

Coupling Effects Between Torsion and Bending in Torsional Micromirrors Under Capillary Forces

Ali Darvishian, Hamid Moeenfard, Mohammad Taghi Ahmadian
Proc. ASME. IMECE2011, Volume 11: Nano and Micro Materials, Devices and Systems; Microsystems Integration, 51-56, November 11–17, 2011
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2011-65121
https://doi.org/10.1115/IMECE2011-65121
View Paper titled, Coupling Effects Between Torsion and Bending in Torsional Micromirrors Under Capillary Forces
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Topics: Torsion
Proceedings Papers

A Coupled Model Between Torsion and Bending in Nano/Micromirrors Under the Combined Effect of Van Der Waals Force and Capillary Force

Hamid Moeenfard, Ali Darvishian, Mohammad Taghi Ahmadian
Proc. ASME. IMECE2011, Volume 11: Nano and Micro Materials, Devices and Systems; Microsystems Integration, 523-529, November 11–17, 2011
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2011-65176
https://doi.org/10.1115/IMECE2011-65176
View Paper titled, A Coupled Model Between Torsion and Bending in Nano/Micromirrors Under the Combined Effect of Van Der Waals Force and Capillary Force
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Topics: Torsion, Van der Waals forces
Proceedings Papers

Closed Form Solutions for the Problem of Statical Behavior of Nano/Micromirrors Under the Effect of Capillary Force and Van Der Waals Force

Ali Darvishian, Hamid Moeenfard, Hasan Zohoor, Mohammad Taghi Ahmadian
Proc. ASME. IMECE2011, Volume 11: Nano and Micro Materials, Devices and Systems; Microsystems Integration, 213-219, November 11–17, 2011
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2011-63112
https://doi.org/10.1115/IMECE2011-63112
View Paper titled, Closed Form Solutions for the Problem of Statical Behavior of Nano/Micromirrors Under the Effect of Capillary Force and Van Der Waals Force
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Topics: Electromagnetic weapons, Van der Waals forces, Mirrors, Rotation, Stability, Approximation, Casimir force, Chemical etching, Manufacturing, Torque
Proceedings Papers

Analytical Modeling of Squeeze Film Damping in Micromirrors

Hamid Moeenfard, Mohammad Taghi Ahmadian, Anoushiravan Farshidianfar
Proc. ASME. IDETC-CIE2011, Volume 7: 5th International Conference on Micro- and Nanosystems; 8th International Conference on Design and Design Education; 21st Reliability, Stress Analysis, and Failure Prevention Conference, 79-85, August 28–31, 2011
Publisher: American Society of Mechanical Engineers
Paper No: DETC2011-47125
https://doi.org/10.1115/DETC2011-47125
View Paper titled, Analytical Modeling of Squeeze Film Damping in Micromirrors
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Topics: Damping, Modeling
Proceedings Papers

Nonlinear Vibration and Buckling Analysis of Beams Using Homotopy Perturbation Method

Mahdi Mojahedi, Hamid Moeenfard, Mohammad Taghi Ahmadian
Proc. ASME. IMECE2010, Volume 10: Micro and Nano Systems, 463-469, November 12–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2010-39592
https://doi.org/10.1115/IMECE2010-39592
View Paper titled, Nonlinear Vibration and Buckling Analysis of Beams Using Homotopy Perturbation Method
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Topics: Buckling, Nonlinear vibration