Piezoelectric linear motor
Piezo LEGS Linear Twin 20N
Piezo LEGS operates directly, with no need for gears or mechanical transmission, to create a backlash free linear motion with nanometer or even sub-nanometer resolution. A conventional electric motor usually requires several assembled parts such as rotor, stator, ball bearings, linear screws etc. to make it work. With the Piezo LEGS direct drive the motor size is significantly reduced and precision is gained by elimination of bulky and lashing mechanical parts.
The motor is easily set up with simple drive electronics. The wide speed dynamics makes the motor suited for a wide variety of applications. It is ideal to use the motor in move and hold applications since there is no power draw in hold position.
In the Piezo LEGS, multiple bimorph actuators are co-sintered to a single body with movable legs made out of ceramic “muscles”.