Electrical
Drives and Actuators -
Mechatronics
| Working areas | ||
| Working areas in the lab of electrical drives, actuators and power electronics are linear motors and their control. The investigated motors are small power motors for a potential use in equipment of precision engineering and automation technologies. | ||
| Linear Induction Motors (LIM) | ||
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The investigated
linear induction motors (LIM) works with m = 2 phases, p = 1 or 3,5 pole
pairs and q = 1 slot per pole to get a
small package. The secondary part consists of iron with a copper layer
on the top. The construction is very easy and compact. Typical thrust forces of an inductor with the size of 35 x 40 x 29 mm3 are 4 N for continuous running and 18 N for short time duty. Bigger inductors are reaching up to 60 N. Together with optical incremental encoders and a control unit the motors work in positioning systems with a typical travel range of 1m. |
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| Planar motors | ||
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The planar motors work with individually controlled
LIMs in a common mover. It can move in three degrees of freedom (3-DOF),
i.e. in the translation coordinates x and y and in the rotation coordinate
?zb. The advantage is the easy kinematic structure without mechanical transmission
or gears. Under test are motors with the inductors in the mover and motors with the passive secondary part as mover. |
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| Piezo impact drives | ||
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The small movements of piezo elements are transmitted
to two masses. One of the masses is linked about friction to ground. With
a special control function it is possible to move the motor about principal
unlimited ranges. Prototypes with the size of 10 x 5 x 14 mm3 reach thrust
forces of 0,3 N and speeds of 2 cm/s. |
