• Proceedings of the Korea Information Processing Society Conference
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• 2001.10a
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• pp.611-614
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• 2001

본 논문에서는 7 개의 마그네틱 센서를 이용하여 가상 캐릭터의 자연스런 동작을 재현하는 애니메이션 알고리즘에 대해 기술한다. 이 방법의 특징은 인체 특징점의 위치와 방향정보를 Inverse Kinematics 이론에 적용하고, 이 특징점이 갖는 3 차원 벡터의 법선벡터를 이용하여 관절 방향을 표현하므로서 최소한의 센서로 전 인체의 동작을 재현할 수 있다는 점이다. 이 방법은 퍼스널 컴퓨터를 플랫폼으로 하는 단순한 모션 캡쳐 환경에서도 구현할 수 있으므로 애니메이션을 활용하는 각종 영상 응용 시스템 제작에 유용하게 쓰일 수 있다.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.40 no.1
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• pp.9-16
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• 2016

A position control system composed of the PMLSM(Permanent Magnet Linear Synchronous Motor), unlike conventional linear permanent magnet synchronous motor is fixed to the permanent magnet moving coil rails (permanent magnet = stator, coil = mover), the coil is fixed, moving the permanent magnet, we propose a position control system (permanent magnet = mover, coil = stator) structure. Position is measured not using conventional encoder or resolver but by adopting vector control method using 2 hall sensors generating rectangular signal. This method estimate the velocity and position of mover by using the quadruple of two hall sensor signal instead of encoder signal. Vector control of PMLSM using 2 hall sensor generating rectangular wave is proved to control the system stable and efficiently through simulation. Also hardware experiment reveals that the position control performance is measured within the range of $30{\sim}50{\mu}m$ in the accuracy of $10{\sim}20{\mu}m$, which is improved twice to the conventional method. The proposed method exhibits its economical efficiency and practical usefulness. The vector control technique using two hall sensors can be installed in narrow place, accordingly it can be implemented on the system where the conventional encoder or resolver cannot operate.