piezoactuators and amplifier?

[hechengli]

Hi guys
I want to buy some piezoactuators and amplifiers, does somebody happen to know which company is better in these products? thanks!

 

[muraliuma]

hi,

first of all you should clear about the fuction you are going to do with the pieazo actuator.
there are plenty of actuators available in the market.

right actuator at right place will do more efficient work.

if you want to know more about u just let me know.

you can get deails from

http://www.PI.com,www.piceramics.com

http://www.cedrat.com

cheers
P.Murali

 

[SERVOCAM]

P.Murali is right about being clear on what you want to do. There are many disadvatages to Piezo electric driven actuators. Look to

http://www.nanomotion.com

for more info on Piezo's. Take a look at:

http://www.aerotech.com/FOC2/foc2.html

> Competing Technologies for more info as well.

Cameron Anderson
Sales & Applications Engineer
Aerotech, Inc
St. Paul, MN

http://www.aerotech.com

"Dedicated to the Science of Motion"

 

[IRstuff]

Piezoelectric traveling-wave motors are pretty cool, though. They operate similar to a circular inchworm, but at ultrasonic frequencies. The beauty is that for some applications, torque requirements are reduced by factors of 2 or more, since the motor can stop in less a fraction of cycle, by simply collapsing the traveling wave. This allows you to accelerate for more than 95% of the time allocated for motion, with the remainder allocated for stopping.

The stopping power is good enough that there are manufacturers designing the motors to be used as brakes for aircraft landing gear. The wheels are spun up prior to touchdown to reduce the friction wear on the tires and after touchdown, the motor behaves like a disk brake.

TTFN