Micro-positioning system
2 mm
New Scale Technologies
We incorporate our motors and position sensors into miniature positioning stages. One of our smallest examples uses an SQL-3.4-10 SQUIGGLE motor and a Hall-effect magnetic position sensor inside the stage body. A benefit of the Hall-effect sensor is that it acts as an absolute position sensor: working by measuring the field along a magnetic strip, it retains position information even after power-down cycles. The SQUIGGLE motor is mounted onto the bottom plate and the screw is pressed against the end of the top plate, which is spring loaded against the screw. Used with the MC-1100 controller, this closed-loop stage has 10 microns resolution over 2 mm of travel. A high-resolution controller with 16-bit A/D converter achieves a resolution of less than one micron.
