著者

竹下 隆晴

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌D(産業応用部門誌) (ISSN:09136339)

巻号頁・発行日

vol.143, no.4, pp.NL4_1, 2023-04-01 (Released:2023-04-01)

著者

竹下 隆晴 野村 尚史 松井 信行

出版者

The Institute of Electrical Engineers of Japan

雑誌

電気学会論文誌D(産業応用部門誌) (ISSN:09136339)

巻号頁・発行日

vol.115, no.4, pp.420-427, 1995-03-20 (Released:2008-12-19)

参考文献数

10

被引用文献数

5 11

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This paper presents a position sensorless drive of a brushless dc motor with a sinusoidal flux distribution. The estimation of position and emf is performed by using the integration of the current differences between the actual motor and model. The estimation speed is calculated by the differential calculus of the estimated position. The stability of the proposed algorithm and the design of the estimation gains are explained and it is shown that the parameter differences do not give serious effects on the estimation characteristics.In the experimental results using a 6-pole 1.2kW test motor, the speed control range from 35 to 1500rpm is obtained. To verify the proposed algorithm, the estimation and speed control characteristics are shown. Furthermore, the starting characteristics of the motor from arbitrary rotor position are shown.

著者

外山 浩司 竹下 隆晴 松井 信行

出版者

The Institute of Electrical Engineers of Japan

雑誌

電気学会論文誌D(産業応用部門誌) (ISSN:09136339)

巻号頁・発行日

vol.117, no.8, pp.1033-1038, 1997-07-20 (Released:2008-12-19)

参考文献数

9

被引用文献数

2 5

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PWM control is promising to achieve a unity power factor and to improve the input current distortion in a high performance current-source three-phase AC/DC converter system. In contrast to the voltage-source converter, the LC filter connected between the source and the converter may cause an LC resonance both in steady and transient states. Many reports have been published to improve the current distortion in steady state and to suppress the current oscillation in transient state of the current-source PWM converter by using the feedback control.This paper gives an analysis of the transient oscillation of the filter voltage and current, and proposes a simple open-loop suppression method by using the rate limiter of the input current reference. Furthermore, the design rule of the LC filter for the suppression control of the transient oscillation is described. The effectiveness of the proposed approach has been verified by experiments.

著者

北川 亘 竹下 隆晴

出版者

The Japan Society of Applied Electromagnetics and Mechanics

雑誌

日本AEM学会誌 (ISSN:09194452)

巻号頁・発行日

vol.25, no.3, pp.319-324, 2017 (Released:2017-10-23)

参考文献数

7

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This paper presents the principle, characteristics and its analysis for bone conduction speaker. Bone conduction speaker has used under the sound noise, openable ear environment or by impaired hearing people because it is able to send the sound vibration directly to ear through the bone. In this article, introduce the 2 type of bone conduction speaker, then it is mentioned its analysis and results.

著者

竹下 隆晴 外山 浩司 松井 信行

出版者

The Institute of Electrical Engineers of Japan

雑誌

電気学会論文誌D(産業応用部門誌) (ISSN:09136339)

巻号頁・発行日

vol.116, no.1, pp.106-107, 1995-12-20 (Released:2008-12-19)

参考文献数

3

被引用文献数

6 9

著者

竹下 隆晴 市川 誠 李 宙〓 松井 信行

出版者

The Institute of Electrical Engineers of Japan

雑誌

電気学会論文誌D(産業応用部門誌) (ISSN:09136339)

巻号頁・発行日

vol.117, no.1, pp.98-104, 1996-12-20 (Released:2008-12-19)

参考文献数

9

被引用文献数

31 37

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This paper presents a position sensorless drive of a salient-pole brushless dc motor with a sinusoidal flux distribution. The algorithm is based on the estimation of back emf which is identified by the errors between the actual and estimated currents. Since the direction and amplitude of the estimated emf correspond to the rotor position and speed respectively, the position and speed can be estimated. The stability of the estimation and the design of the estimation gains are examined.The proposed algorithm were verified by using a 6-pole, 200W, 3000rpm test motor. In the results, the sensorless speed control range from 50rpm to 4000rpm under 0_??_100% load was obtained. The estimation algorithm is stable for any position error and any emf error.

著者

竹下 隆晴 北川 亘 浅井 石南 中澤 秀彦 古橋 雄介

出版者

一般社団法人 電気学会

雑誌

電気学会誌 = The journal of the Institute of Electrical Engineers of Japan (ISSN:13405551)

巻号頁・発行日

vol.132, no.10, pp.673-676, 2012-10-01

参考文献数

2

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本記事に「抄録」はありません。

著者

外山 浩司 竹下 隆晴 松井 信行

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌D(産業応用部門誌) (ISSN:09136339)

巻号頁・発行日

vol.116, no.3, pp.354-360, 1996-02-20 (Released:2008-12-19)

参考文献数

9

被引用文献数

2 4

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The authors already proposed the new control scheme of the PWM converters where the control scheme was performed on the estimated voltage and phase of the source, thus eliminating the voltage sensor.The paper deals with a stability problem of a sensorless PWM converter control. Under consideration of the parameter error, the stability analysis of the proposed control is examined. In addition to that, a design procedure of the estimation gains is also examined. For the stable starting of the system, the initial estimation of the amplitude and phase angle of the source voltage is proposed.The effectiveness of the theoretical stability and estimation gain design has been confirmed by experiments.