Pealkiri

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IPMC articles of last months
Indrek Must 26.10.09
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Classification

• New materials
• Models
• Applications

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• New materials

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Polymer actuator based on PVA/PAMPS ionic
membrane Optimization of ionictransport
propertiesChi-An Dai, Chun-Jie Chang, An-Cheng
Kao, Wei-Bor Tsai, Wen-Shiang Chen, Wei-Ming Liu,
Wen-Pin Shih, Chien-Ching Ma (Taiwan)Sensors and
Actuators A 155 (2009) 152162

• IPMC actuator
• Ionic network of (blend ratio was optimised)
• poly (vinyl alcohol) (PVA) (biocompable)
• poly 2-acrylamido-2-methyl-1-propanesulfonic acid
  (PAMPS)
• Parameters
• Water uptake
• Ion exchange capacity
• Ionic conductivity
• Large bending movements
• Maintains curl-up
• Advantages
• Cost-effective
• Simple aqueous solution casting

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Novel biomimetic actuator based on SPEEK and
PVDF Jin-Han Jeon, Seong-Pal Kang, Sunwoo Lee,
Il-Kwon Oh (Cor) Sensors and Actuators B xxx
(2009) xxxxxx

• IPMC actuator
• Sulfonated poly(ether ether ketone) (SPEEK)
  (fuel-cell membrane material)
• poly(vinylidene fluoride) (PVDF) (mechanical,
  chemical and thermal properties)
• Pure SPEEK or SPEEKPVDF
• Controllable stiffness and ion networking
• Controllable hydrophilicity of SPEEK and
  hydrophobicity of PVDF
• SPEEKPVDF vs SPEEK
• Larger tip displacements
• No straightening back
• Greater blocking force
• SPEEKPVDF vs NAFION
• Currently not superior
• Search of optimal combination

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Nafion-based polymer actuators with ionic
liquids as solvent incorporated at room
temperatureKunitomo Kikuchi, Shigeki
TsuchitaniJOURNAL OF APPLIED PHYSICS 106, 053519
(2009)

• IPMC
• Nafion ionic liquid
• EMIBF4
• BMIBF4
• BMIPF6 (larger bending curvature)
• Bending curvature same or larger than
  conventional ionic liquid IPMCs
• Stability of 180min in air
• Measurements
• Impedance
• Step response
• gt0.1 Hz
• Equivalent circuit model
• Maximum bending curvature lt-gt bending response
  speed

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Hybrids perfluorosulfonic acid ionomer and
silicon oxide membrane for application in
ion-exchange polymer-metal composite
actuatorsGUO DongJie, DING HaiTao, WEI HaiJu,
HE QingSong, YU Min DAI ZhenDongInstitute of
Bio-inspired Structure and Surface Engineering,
Nanjing University of Aeronautics and
Astronautics, Nanjing, 210016,ChinaSci China Ser
E-Tech Sci, 2009, 52(10) 3061?3070, doi
10.1007/s11431-009-0280-4

• New IPMC fabrication technique
• Hybrid organic-inorganic composite membrane
• Silica oxide particles
• Perfluorosulfonate acid (PFSA)
• Properties vs commercial PFSA
• Hardness and elastic modulus 2 times
• Electromechanical properties 6-8 times
• Non-water working time 6-7 times
• Higher porosity
• Stronger blocking force

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All-Organic Motion SensorsElectromechanical
ModelingGiovanna Di Pasquale, Luigi Fortuna,
Fellow, IEEE, Salvatore Graziani, Member,
IEEE,Manuela La Rosa, Donata Nicolosi, Giovanni
Sicurella, and Elena UmanaIEEE TRANSACTIONS ON
INSTRUMENTATION AND MEASUREMENT, VOL. 58, NO. 10,
OCTOBER 2009

• All-organic IPMCs
• NafionConducting polymers (PEDOTPSS PANI)
• Sensing and acting features demonstrated
• Problems
• Calibration
• Standardization
• Working principles

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• Models

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Verification of Beam Models for Ionic
Polymer-Metal Composite Actuator Ai-hong Ji,
Hoon Cheol Park, Quoc Viet Nguyen, Jang Woo Lee,
Young Tai Yoo (cor) Journal of Bionic
Engineering 6 (2009) 232238

• IPMC
• Nafion-117 PP/alumina composite filler
• Thick (0.6 mm)
• Parameters
• Blocking force and tip displacement
• Youngs modulus (bending and tensile tests)
• Models (Le et al 2005)
• Equivalent beam
• Equivalent bimorph beam
• Both models were found to be practical
• 0.2 error on 2nd
• FEM analysis

• Youngs modulus
• Bending
• Tensile (Instron 4465)
• Force-displacement relationship
• uniformly distributed load

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Modeling of ionic polymer metal composite
actuator dynamics using a large deflection beam
modelShivakanth Gutta, Joon S Lee, Mohamed B
Trabia, Woosoon YimSmart Mater. Struct. 18
(2009) 115023 (9pp)

• Dynamics of IPMC bending under applied moment
• FEM
• Lumped RC circuit
• Applied voltage to beam deflection
• IPMC is composed of n elements
• Kinematics is expressed in local terms,
  eventually in global one

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Frequency-weighted feedforward control for
dynamic compensation in ionic polymermetal
composite actuatorsYingfeng Shan and Kam K
LeangSmart Mater. Struct. 18 (2009) 125016 (11pp)

• Feedforward controller
• Frequency-weighted approach
• Fast positioning
• 75 reduction in tracking error
• Custom-made Nafion-based actuator
• Integrated feedback controller
• For unmodelled effects (relaxation,
  nonlinearities)
• Feasible for control without feedback
• Controller
• Tracking 1, 10, 18 Hz triangular trajectory

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Modelling of ionic polymermetal composites by a
multi-field finite element method Yaqi Gong,
Chak-yinTang, Chi-pongTsui, Jianping Fan (Chi)
International Journal of Mechanical Sciences
accepted

• IPMC mechanical behaviour
• Factors
• Electrostatic force
• Viscous resistance forces of sodium ions
• Water and sodium molecule diffusion resistance
  forces (non-linear)
• Effects
• Water concentration
• Charge density of sodium ions
• Bending displacement
• Migration speed
• Electric field
• Multi-field finite element method
• Water concentration, charge of sodium ions near
  electrode sides are closer to initial values,
  result in less bending deformation

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• Applications

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Polymer packaging for arrayed ionic polymermetal
composites and its application to micro air
vehicle control surfaceSeong Jun Kim, Chahngmin
Cho, Yong Hyup KimSmart Mater. Struct. 18 (2009)
115009 (10pp)

• Defense application
• IPMC-s arrayed in horizontal and vertical
  directions
• Arrayed IPMC was packaged in PDMS glove
• Multifinctional control surface of micro ar
  vehicle
• Generated force is increased by the number of
  IPMC-s, decrease of deflection is minimized.

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A Camera Based Method for the Measurement
ofMotion Parameters of IPMC ActuatorsKyriakos
Tsiakmakis, Jordi Brufau-Penella, Manel
Puig-Vidal, Theodore LaopoulosIEEE TRANSACTIONS
ON INSTRUMENTATION AND MEASUREMENT, VOL. 58, NO.
8, AUGUST 2009

• Underwater robotics
• Resolution at least 0.5mm
• Slow and large movements
• Results are compared to laser positioning
• Problem computational time (?)

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Research on PVDF Displacement Sensor Used on
IPMCXiufen Ye, Ling Zhu, Shuxiang Guo, Yandong
LiProceedings of the2009 IEEE International
Conference on Mechatronics and Automation, August
9 - 12, Changchun, China

• IPMC actuator with PVDF-based sensor

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