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WTYD
Series Ceramic Micro-actuators
The series products adopt piezoelectricity ceramic
material which having high piezoelectricity strain constant（d33，d31）and be made by monolithic lamination technics. Its work principle is by against piezoelectricity
effect of the piezoelectricity ceramic, namely under the process of the
electric field, the actuators give birth to ausform.
In the elasticity limit, the relation about the ausform and in addition electric field is linearity relation.
The character of the asform will take place change (protraction
or shortening) with the change of the electric field. In the asform formula, commonly consider S = dE
because d is lager several order than M.
The comparison in WTYD micro-actuator and WTDS series
micro-actuator:
|
|
WTYD Series
|
WTDS Series
|
|
The relation about Strain
and electric field
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S＝dE，
close to linearity
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S＝dE＋ME2，
parabola
|
|
Low voltage
sensitivity
|
high
|
low
|
|
polarity
|
having
|
without
|
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Return to zero
|
lower
|
higher
|
|
lag
|
little
|
little
|
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Aging
|
little
|
Very little
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WTYS series and WTDS series have the same conditions basically.
Before-mentioned size of WTYS series all can came true through WTYD series. The
driving voltage of WTYD is commonly 0～+200VAD or 0～100VAD and the most negative voltage permitted infliction is
40% of the most voltage normal working. Technique parameter of
WTYD series electrostriction
Micro-actuators
|
Type
|
Driving
voltage
(VAD)
|
The
most displacement（μm）
|
Capacitance
（nF±10％）
|
Thrust
force
（N）
|
Tension
（N）
|
Size
（mm）
|
|
WTYD0503012
|
0～+100
|
5
|
340
|
100
|
0．5
|
5×3×12
|
|
WTYD0505020
|
0～+100
|
10
|
900
|
150
|
0．8
|
5×5×20
|
|
WTYD0808020
|
0～+100
|
10
|
2300
|
500
|
5
|
8×8×20
|
|
WTYD0808020
|
0～+200
|
20
|
2200
|
500
|
5
|
8×8×20
|
|
WTYD0808055
|
0～+200
|
40
|
6000
|
500
|
5
|
8×8×55
φ14×55
|
|
WTYD1008055
|
0～+200
|
40
|
7500
|
650
|
6．5
|
10×8×55
φ16×55
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