Fluorescent Dye Based Optical Position Sensing for Planar Linear Motors
نویسندگان
چکیده
Industrial Sawyer motor technology has existed for nearly three decades, traditionally being operated as open-loop positioners. Such systems can attain micron level motion resolution and open-loop repeatability of 10 m. This paper outlines a optical sensing technique for Sawyer motors which is capable of sub-micron resolution. Such a sensor can easily be integrated into a motor enabling closed-loop control and sub-micron repeatability.
منابع مشابه
Magnetic and optical-fluorescence position sensing for planar linear motors
Planar linear motors, e.g. Sawyer motors, operate in an open-loop stepping manner. This mode of operation makes them i) susceptible to loss of steps, ii) unable to reject external disturbances, iii) unable to provide controlled forces, and iv) unable to provide high sti ness. These limitations, in turn, restrict their usefulness in a wide range of robotic applications. Suitable position sensing...
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