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Analysis and compensation of errors in the input device based on inertial sensors

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7 Author(s)
Jing Yang ; Ubiquitous Comput. lab, Samsung Adv. Inst. of Technol., Gyeonggi-Do, South Korea ; Wook Chang ; Won-Chul Bang ; Eun-Seok Choi
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Here, a pen-type input device is proposed to track trajectories in 3D space by using accelerometers and gyroscopes. Inertial navigation system (INS) theory, as an autonomous positioning technology widely adopted, is employed to track the users' handwriting motion without external reference sensors or signals. The INS-based positioning system, however, suffers from unbounded error, which grows with time due to the integration process involved. In order to solve this problem, the system error model is built to analyze the influence of error sources. Then efficient error compensation algorithm based on zero velocity compensation (ZVC) is developed to reduce the effect of identified errors. The experiments show the effectiveness and feasibility of the proposed method.

Published in:

Information Technology: Coding and Computing, 2004. Proceedings. ITCC 2004. International Conference on  (Volume:2 )

Date of Conference:

5-7 April 2004

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