| |
actuators
|
bearings
|
| type |
translation, 1 DOF
|
translation, 1 DOF or 2 DOFs
|
| stroke |
up to 90% of airgap
|
up to 50mm
|
| size |
> ø4 x 10mm
|
typical ø25 x 75mm
|
| magnetic principle |
reluctance. Heteropolar or hybrid magnetic circuit; the coil flux does not pass through the permanent magnets, resulting in high efficiency and motor constant
|
| other |
position independent motor constant
constant magnetic stiffness
(< 5% variation over stroke) |
stiffness point moves together with the CoG of the moving part
possibility to implement redundant coils
|
| |
low moving mass |
low moving mass |