Motivated by two applications (retinal prosthesis and nondestructive damage detection), this research develops a new actuator utilizing magnetic/electric fields as media to enable open-loop induction control of a relatively high-resolution eddy-current pattern on an electrically conductive surface with a relatively small number of electromagnets (EMs). The actuator referred to here as a magnetic/eddy-current (M/EC) continuous field scanner transduces an image into an M/EC pattern induced by a two-dimensional EM array. Unlike traditional digital stimulation devices where the spatial resolution is defined by discrete spacing between two adjacent electrodes, the continuous-field scanner accurately controls the synthetized M/EC fields between adjacent EMs. Along with a detailed presentation of an analytical model and its inverse solutions to enable the continuous-field scanning, this paper presents a numerical study to investigate the effects of key design parameters, and some preliminary experimental results to validate the concept feasibility of the proposed method.
- Dynamic Systems and Control Division
A Continuous-Field Actuation Method for Transducing Optical Color Images to Magnetic/Eddy-Current Patterns
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Lee, K, Lin, C, & Li, M. "A Continuous-Field Actuation Method for Transducing Optical Color Images to Magnetic/Eddy-Current Patterns." Proceedings of the ASME 2015 Dynamic Systems and Control Conference. Volume 3: Multiagent Network Systems; Natural Gas and Heat Exchangers; Path Planning and Motion Control; Powertrain Systems; Rehab Robotics; Robot Manipulators; Rollover Prevention (AVS); Sensors and Actuators; Time Delay Systems; Tracking Control Systems; Uncertain Systems and Robustness; Unmanned, Ground and Surface Robotics; Vehicle Dynamics Control; Vibration and Control of Smart Structures/Mech Systems; Vibration Issues in Mechanical Systems. Columbus, Ohio, USA. October 28–30, 2015. V003T45A006. ASME. https://doi.org/10.1115/DSCC2015-9958
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