SMART ACTUATORS CHARACTERIZATION

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SMART ACTUATORS CHARACTERIZATION

• Victor Giurgiutiu, Radu Pomîrleanu
• Laboratory of Active Materials and Smart
  Structures
• Mechanical Engineering Department, University of
  South Carolina

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Smart materials
Upon the application of an external field, the
material expands or contracts.
Smart (active, intelligent, adaptive) materials
- piezoelectric materials ?? electric field -
magnetostrictive materials ?? magnetic field -
shape memory alloys ?? temperature
Applications- space technology -
rotorcraft and aircraft industry -
sonar technology - vibration and noise
reduction
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Characterization of the PiezoSystems Jena
PAHL120/20 piezoelectric actuator
Manufacturer PiezoSystems Jena Model
PAHL120/20 Maximum voltage (V) 150 Max. displ.
(mm) 120 Blocked force (N) 3500 Capacitance
(mF) 42
Coupled electro-mechanical behavior of PAHL 120/20
Actuator
Voltage
ki
ke
Force, Displacement
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Impedance measurements on the ETREMA AA140J130
Magnetostrictive actuator
Measured UT, UR, delay (phase) between UT and UR
Manufacturer Etrema Inc. Model AA
140J013 Maximum current (A RMS) ?3 Max. displ.
(mm) ?70 Max. dynamic force (N) ?890 Blocked
force (N) 1740 DC Resistance (W) 2.3 Inductance
(mH) 3.5
Electric impedance change with current and
frequency