著者
山川 宏 川口 淳一郎
出版者
公益社団法人 計測自動制御学会
雑誌
計測と制御 (ISSN:04534662)
巻号頁・発行日
vol.39, no.9, pp.559-563, 2000-09-10 (Released:2009-11-26)
参考文献数
9
被引用文献数
1
著者
田中 颯樹 増田 容一 石川 将人
出版者
公益社団法人 計測自動制御学会
雑誌
計測自動制御学会論文集 (ISSN:04534654)
巻号頁・発行日
vol.55, no.4, pp.305-312, 2019 (Released:2019-04-16)
参考文献数
15
被引用文献数
1

This paper is concerned with nonlinear analysis of a 1-d.o.f. vertical hopping robot, composed of its body, foot and a DC motor with crank mechanism. We show that its hopping motion under a constant voltage converges into a stable limit cycle, through physical experiments and numerical simulations. We then clarify this stabilization mechanism based on a simplified mathematical model, by showing that the negative torque-velocity correlation (weakness) of DC motors plays as a feedback law for stabilization. We also show that the limit cycles exhibit period-doubling bifurcation as the applied voltage increases, and the corresponding bifurcation diagram is affected by the weakness parameter of the DC motor.
著者
田中 颯樹 増田 容一 石川 将人
出版者
公益社団法人 計測自動制御学会
雑誌
計測自動制御学会論文集 (ISSN:04534654)
巻号頁・発行日
vol.55, no.4, pp.305-312, 2019

<p>This paper is concerned with nonlinear analysis of a 1-d.o.f. vertical hopping robot, composed of its body, foot and a DC motor with crank mechanism. We show that its hopping motion under a constant voltage converges into a stable limit cycle, through physical experiments and numerical simulations. We then clarify this stabilization mechanism based on a simplified mathematical model, by showing that the negative torque-velocity correlation (weakness) of DC motors plays as a feedback law for stabilization. We also show that the limit cycles exhibit period-doubling bifurcation as the applied voltage increases, and the corresponding bifurcation diagram is affected by the weakness parameter of the DC motor.</p>
著者
白井 達也 金子 真
出版者
公益社団法人 計測自動制御学会
雑誌
計測自動制御学会論文集 (ISSN:04534654)
巻号頁・発行日
vol.29, no.4, pp.385-394, 1993-04-30 (Released:2009-03-27)
参考文献数
10

Power transmission systems with timing belt are often used in various machines because of their simple mechanism and easy treatment. However, the diagnosis for those transmission system has not fully established. This paper discusses self-failure diagnosis for a timing belt transmission system using tension-differential-type torque sensor (TDT sensor). A tension pulley is usually incorporated into a part of the transmission system, so that the system can maintain a proper tension during operation. Since such a tension pulley receives force directly from the timing belt, it is expected that the diagnosis of the timing belt can be done with much high S/N ratio and thus with high reliability. Based on this idea, the authors designed a TDT sensor available for a timing belt application, and explored a diagnosis algorithm detectable not only for a timing belt with V-crack but also for a timing belt with blinding at a tooth. Through a number of experiments, we verified the effectiveness of the proposed algorithm and also found an interesting behavior of the sensor signals which is not expected.
著者
藤崎 泰正
出版者
公益社団法人 計測自動制御学会
雑誌
計測と制御 (ISSN:04534662)
巻号頁・発行日
vol.60, no.5, pp.331-338, 2021-05-10 (Released:2021-05-21)
参考文献数
17
著者
岡本 勲
出版者
公益社団法人 計測自動制御学会
雑誌
計測と制御 (ISSN:04534662)
巻号頁・発行日
vol.32, no.7, pp.577-581, 1993-07-10 (Released:2009-11-26)
被引用文献数
1
著者
増淵 正美
出版者
公益社団法人 計測自動制御学会
雑誌
計測と制御 (ISSN:04534662)
巻号頁・発行日
vol.8, no.3, pp.201-208, 1969-03-10 (Released:2009-11-26)
参考文献数
51
著者
南 裕樹 池田 智裕 石川 将人
出版者
公益社団法人 計測自動制御学会
雑誌
計測自動制御学会論文集 (ISSN:04534654)
巻号頁・発行日
vol.56, no.9, pp.425-431, 2020 (Released:2020-09-12)
参考文献数
13

This paper focuses on the quantization problem of connection weights of neural networks. Our previous work proposed a class of quantizers, called noise-shaping quantizer, for the quantization of neural networks. The performance of the proposed quantizer depends on the error diffusion filter. This paper proposes a systematic design method of error diffusion filters based on features of learning data, which is used for the learning of neural networks. In the proposed design method, satisfactory error diffusion filters are given by solving a kind of traveling salesman problems.