An industrial metrology equipment manufacturer was designing a high precision, portable, laser based scanning system. It featured a scan mirror spinning rapidly in one axis and rotating slowly in another to map out a high resolution topographical dataset. To achieve their needs system portability and to capture extremely accurate and precise data, they required encoders and motors that were light weight, compact and could provide very smooth position and velocity control.
The compact Mercury 1540P digital incremental encoder with a custom flex cable was paired with a 57mm diameter grating disk to provide 19 µrad resolution feedback in a low profile and cost-effective solution. The total encoder height is only 10.2mm and weighs approximately 14g. Additionally, a 43mm diameter frameless Omni Series motor was incorporated into the device which reduced their previously bulky motor stack height to a mere 6 mm and provided the smoothest motion possible from direct drive motors.
MicroE’s compact Mercury Series encoder and Omni Series frameless motor technologies were customized to suit the customer’s exact dimensional and performance requirements. They were combined to provide the customer the precision, speed and portability their design demanded.
|Sensor Dimensions||15.2x 8.8 x 5.6mm|
|Interface||Digital A-quad-B with index|
|Grating Dimensions||57 OD x 25 ID x 2.29mm|
|Grating Period||20 µm|
|System Resolution||19 µrad|
|Maximum Speed||2637 RPM|
|Continuous Torque||up to 5.9Nm|
|Peak Torque||up to 17.7Nm|
|Diameter (Stator OD)||45 to 165mm|
|Through Hole (Rotor ID)||32 to 120mm|
|Maximum Speed||up to 5,000 rpm|