研究等業績 - その他 - 三浦 武
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Maximum Torque Micro-Step Drive of a Five-Phase Hybrid Stepping Motor
Matsuo K.
IEEJ Transactions on Electrical and Electronic Engineering ( IEEJ Transactions on Electrical and Electronic Engineering ) 2022年
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Point location conversion in distance cartogram construction based on vector field analysis
Miura T.
Journal of Information Processing ( Journal of Information Processing ) 28 ( 0 ) 711 - 714 2020年
<p>Distance cartograms are deformed maps in which the distance of each of the preselected point pairs in the geographic map is changed in step with a specified value such as a travel time. In distance cartogram construction, the preselected points are fixed in the first step whereas the locations of other points are converted in the second step. This paper proposes a new point location conversion method for the second step. The conversion process is modeled as a phenomenon in a three-dimensional vector field. Each point in the geographic map is connected with the corresponding point in the cartogram by a streamline of the field. The connection relationship becomes a smooth homeomorphism required in distance cartogram construction. The experimental results demonstrate its effectiveness.</p>
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Vibration reduction of a stepping motor using a pre-compensator to remove control delay
Matsuo K.
IEEJ Journal of Industry Applications ( IEEJ Journal of Industry Applications ) 9 ( 2 ) 191 - 192 2020年
<p>To reduce vibration, overshoot, and tracking error of the rotor in an open-loop micro-step drive of a stepping motor, we propose a novel pre-compensator using a low-pass type filter without control delay. The pre-compensator consists of a low-pass filter that removes the natural frequency component causing the vibration and a zero-phase filter that removes the control delay. Finally, a position control experiment demonstrates the validity of the pre-compensator.</p>
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三浦 武
電気学会誌 ( 一般社団法人 電気学会 ) 140 ( 11 ) 736 - 736 2020年
<p>1．はじめに</p><p>秋田県には数多くの民俗芸能が存在し，それらのいくつかは国や地方自治体によって重要無形民俗文化財に指定されている。秋田県における国指定の重要無形民俗文化財の総数</p>
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Improvement of moving least squares transformation in distance cartogram construction
Miura T.
IEEJ Transactions on Electrical and Electronic Engineering ( IEEJ Transactions on Electrical and Electronic Engineering ) 14 ( 12 ) 1879 - 1880 2019年12月
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Precise position control of a stepping motor in micro-step drive using pre-compensator
Matsuo K.
IEEJ Journal of Industry Applications ( IEEJ Journal of Industry Applications ) 7 ( 4 ) 369 - 370 2018年
<p>In this paper, we propose a method for improving the positional accuracy of a stepping motor in micro-step drive by just modifying a reference angle using the proposed pre-compensator. For a given reference angle, the pre-compensator outputs the modified reference, which cancels the positional error due to the torque ripples and friction. To validate this method, position control experiments were carried out with and without the pre-compensator. The results demonstrate that the positional accuracy of micro-step drive with the pre-compensator is significantly better than that without the pre-compensator.</p>
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Low-dimensional feature vector extraction from motion capture data by phase plane analysis
Miura T.
Journal of Information Processing ( Journal of Information Processing ) 25 ( 0 ) 884 - 887 2017年09月
<p>This paper proposes a method to obtain a low-dimensional feature vector appropriately representing the characteristics of a given motion-capture data stream. The feature vector is derived based on the concept of phase plane analysis. A set of phase plane trajectories are obtained from the temporal variation of the state variables representing the body-segment arrangement. The information on six motion-characteristic properties is extracted from the shapes of the trajectories, and used as the components of a six-dimensional feature vector. The experimental results showed the effectiveness and limitation of the proposed method.</p>