著者

北川 亘 服部 陽助 藤原 耕二 石原 好之 戸高 敏之

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 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society (ISSN:09136339)

巻号頁・発行日

vol.129, no.11, pp.1016-1021, 2009-11-01

参考文献数

5

被引用文献数

2

---

This paper describes the preliminary investigation of the database of magnetic properties of magnetic materials to realize the highly accurate magnetic field analysis. By showing the various measured properties, the contents of database, which are possible to be prepared by means of current measurement techniques, were shown.

著者

大島 正明 中村 文則 玉井 伸三 山本 融真 森 治義

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 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society (ISSN:09136339)

巻号頁・発行日

vol.120, no.1, pp.104-111, 2000-01

参考文献数

12

被引用文献数

3 1

---

This paper proposes a novel single-phase UPS inverter modulated by Error-Tracking Mode PWM scheme. An ac voltage regulation scheme which matches the PWM scheme is newly developed in a theoretical way. Since Error-tracking Mode PWM is based on constantly-sampled data, the controller is suited to be digitally implemented. The equivalent circuit of the UPS inverter controlled by the schemes is derived. The output impedence is found to be composed mainly of resistance differently from general ac apparatus.<br>According to the newly-developed schemes, a 3kVA, 100V, 50Hz UPS inverter is experimentally fabricated in which the sample period is 10μs and the average switching frequency is 6kHz. No load, linear load and non-linear load characteristics are measured. The output voltage remains almost sinusoidal even for the rated non-linear load. The output impedences are also measured and well agreed with the intended values.

著者

沼崎 光浩 宮崎 玲 高原 英明

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 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society (ISSN:09136339)

巻号頁・発行日

vol.119, no.11, pp.1345-1352, 1999-11

参考文献数

12

被引用文献数

1 2

---

This paper describes improvement for wheel slip and re-adhesion control for electric locomotives with induction motor vector control. Compared with the conventional slip frequency method, the torque response is much improved by the vector control. By referring the re-adhesion process for the traditional rectifier controlled do-motor locomotives, suitable torque reduction to an induction motor is applied in accordance with the wheel slip speed. The test results by the series EH500 locomotive for Japan Freight Railway Company, show much improvement for the re-adhesion process especially when a steeper torque reduction ratio is applied.

著者

伊東 淳一 藤井 崇史 星野 哲馬 小高 章弘 佐藤 以久也 田中 大輔

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 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society (ISSN:09136339)

巻号頁・発行日

vol.128, no.8, pp.1005-1012, 2008-08-01

参考文献数

12

被引用文献数

4 9

---

This paper proposes analysis a dead-time error voltage compensation method with a disturbance observer for vector control, and analyses the proposed method. The dead-time compensation is very important to improve performances in the low speed region. The proposed compensation method is composed in the d-q rotational frame with the disturbance observer. As a result, a disturbance transmission characteristic becomes same as a high-pass filter. Then a stability of the proposed controller is hardly affected by controller parameters. In this paper, the validity of analysis is confirmed by experimental results under some conditions. The experimental results are similar to analyzed characteristics and indicate a validity of the analysis results.

著者

後藤 幸夫 駒谷 喜代俊 福田 豊生

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 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society (ISSN:09136339)

巻号頁・発行日

vol.116, no.5, pp.569-577, 1996-04-20

参考文献数

16

被引用文献数

25 6

---

Increasing vehicular traffic are causing traffic jam and social economic loss in recent years. Dynamic traffic management systems based on actual traffic conditions are expected to reduce these problems. Computer simulation is a powerful tool to evaluate the system performance of new traffic management system, since it is difficult to evaluate it under various traffic conditions in the real world due to huge costs and safety concerns.<br>In this paper, we propose a new microscopic traffic simulation model by object-oriented programming style. In this model, the street network is composed of nodes and links and vehicles run autonomously in the street network. The autonomous vehicle movement model is composed of decision model that depends on the driver's character and vehicle motion model that depends on the attribution of the vehicle. Then, we analyze the quality of our proposed model and show the effectiveness for evaluating the performance of the traffic management systems.

著者

武井 貴義 下野 誠通 大西 公平

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 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society (ISSN:09136339)

巻号頁・発行日

vol.129, no.6, pp.601-607, 2009-06-01

被引用文献数

5 4

---

Recently, minimally invasive surgery (MIS) has become apparent. Research has been performed on surgical robots needed in MIS. In the case of MIS, it is effective to express environmental impedance as numerical data in order to preserve it for establishing standard reference values of the conditions of internal organs. In this paper, we propose a novel method for the estimation of stiffness in real environments in which bilaterally controlled robots are needed. By using the proposed method, environmental stiffness can be estimated dynamically regardless of the initial position of slave system. The viability of the proposed method is confirmed from the experimental results.

著者

高島 大 冨田 睦雄 陳 志謙 佐藤 光彦 道木 慎二 大熊 繁

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 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society (ISSN:09136339)

巻号頁・発行日

vol.123, no.6, pp.762-763, 2003-06-01

被引用文献数

1

---

This paper proposes to paste non-magnetic materials on the rotor surface of a cylindrical brushless DC motor and to use the model including the extended e.m.f. for sensorless control. In the proposed method, the inductance changes depending on the rotor position because of eddy currents, which flow on the non-magnetic material at high frequency. The rotor position can be estimated at standstill and at low speeds. The simulation results show that the proposed method is very useful.

著者

伊東 圭昌 宮澤 以鋼 関口 隆

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 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society (ISSN:09136339)

巻号頁・発行日

vol.121, no.4, pp.461-467, 2001-04-01

被引用文献数

1

---

Programmable Controllers (PCs) are widely applied in the control of manufacturing systems. The purpose of this paper is to give some basic concepts for the verification methods of sequential control systems. Especially, we propose the modeling method of Ladder Diagram (LD) with the cyclic scan of PC by Petri Nets (PNs). First, some experiments are conducted to examine the relationship between the cyclic scan and the behavior of LD. Second, PNs are used for the qualitative modeling of the behavior of LD, based on IEC61131-3. In addition to LD Boolean logic expressions, we consider the PC operation, described by the cyclic scan, peripherals, memories, scanning ladder rungs. As a result, the difference between the LD description and the behavior, caused by the cyclic scan, can be represented by the proposed PNs. Moreover, the behavior of the PNs can be analyzed by the firing sequences, and then confirmed in good qualitative agreement with that of the experimental results.

著者

篠原 勝次 山本 吉朗

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 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society (ISSN:09136339)

巻号頁・発行日

vol.126, no.9, pp.1161-1170, 2006-09-01

被引用文献数

14 15

---

The direct ac/ac converters have been investigated in the last two decades because they had no dc-link component for large energy storage. In, Japan, 10kVA-40kVA matrix converters were developed in 2005. The direct ac/ac converters are classified into two main categories, namely, the matrix converters and the direct ac/ac converters with dc Link. And various control strategies for them have already been proposed. This paper discusses and summarizes main circuits, control strategies, overvoltage protection, and ride-through capability of the direct ac/ac converters.

著者

山中 章広 渡邉 朝紀 針山 隆史 中村 茂

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 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society (ISSN:09136339)

巻号頁・発行日

vol.119, no.2, pp.243-253, 1999-02

被引用文献数

7 6

---

Recently trains raise speed and reduce the motor vehicle ratio. It is needed, therefore, to utilize adhesion force more effectively. Although several. anti-slip readhesion control methods have been developed, it has become clear that slip and readhesion repeat under strict adhesion conditions as far as they rely on the conventional concept of readhesion control. So we thought about the reason why conventional anti-slip control methods cause slip/readhesion reiteration under strict adhesion condition and have developed a new control method "Anti-slip Readhesion Control Method with Presumed Adhesion Force". We confirmed in running tests that we can prevent slip/readhesion reiteration and stably control motor currents even under strict or rapidly changing adhesion conditions by using the newly developed control method.

著者

大石 潔 ケイプロム ウィモンパン 染野 徹

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 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society (ISSN:09136339)

巻号頁・発行日

vol.118, no.1, pp.38-44, 1998-01

被引用文献数

7 6

---

When a robot manipulator performs fast motion control, high joint torque is required. Moreover, additional joint torque is necessary to suppress disturbance. However, as an actuator can not produce very high joint torque, the saturation on joint torque occurs. This paper proposes a strategy to solve the saturation problem stated above. The two algorithms called the torque limiting algorithm and the reference adjusting algorithm are introduced. The torque limiting algorithm is applied in order to prevent the saturation of joint torque. Another algorithm called the path reference adjusting algorithm will suppress the deviation on path tracking caused by the limitation. The effectiveness of the proposed method is confirmed by experimental results of a 2-link planar arm manipulator.

著者

坂本 哲三

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 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society (ISSN:09136339)

巻号頁・発行日

vol.120, no.8, pp.1024-1030, 2000-08-01

被引用文献数

2 3

---

The superconducting magnetically levitated vehicle has guidance coils that produce vehicle guidance forces according to a null flux principle. However, the expected forces dont have significant damping forces to suppress a lateral vibration of the vehicle. Even though the experimental system has some magnitude of damping, it is still small. Moreover, since the guidance forces are very weak at low speeds, the minimum levitating speed is limited. The paper proposes a guidance method using LSM armature coil currents. When the currents are decomposed into dq frame variables so that the d-axis is assigned to the filed axis, the d-axis component of currents generates the lateral forces. The lateral forces of the vehicle are formulated, and the guidance force coefficient is defined. And the author shows the design formula of the guidance regulator system that employs a dynamic compensator using a feedback signal of lateral displacement. The calculated results show that the guidance regulator system works very well as we specify.

著者

林屋 均 大崎 博之 正田 英介

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 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society (ISSN:09136339)

巻号頁・発行日

vol.120, no.6, pp.928-933, 2000-07-01

被引用文献数

6 1

---

To improve the quality of products in a steel making process, the realization of a non-contacting conveyance of a steel plate has been expected. To make the total system simple, we proposed a combined lift and propulsion system by transverse flux linear induction motors. By feeding the DC biased AC to the transverse flux linear induction motor, it is possible to realize an efficient combined lift and propulsion system with a simple structure. After showing the peculiarities of the system, conveyance experiments of a steel plate are carried out. In these experiments, the equivalent mass estimation method in which the levitation mass is estimated from the gap error is applied and the effect of the method is also shown.

著者

王 鋒 佐川 貢一 石原 正 猪岡 光

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 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society (ISSN:09136339)

巻号頁・発行日

vol.122, no.7, pp.730-735, 2002-07-01

被引用文献数

9 11 5

---

This paper describes the development of a driver assistance system for improving passenger ride comfort of automobiles. Based on results of psychophysical experiments of subjective ride comfort evaluation, a linear multiple regression model that evaluates the ride discomfort index (RDI) is proposed using longitudinal acceleration and jerk of the automobile as explanatory variables. In order to reduce the ride discomfort caused by the velocity fluctuation of an automobile, a microcomputer-based driver assistance system that evaluates the RDI and informs the driver of the RDI in real time by both visual and auditory means is developed. Experiments show that, with the help of the system, a driver can improve his/her driving skills and modify his/her driving behavior to provide passenger-friendly maneuvers and improve passenger ride comfort, thus verify the usefulness of the proposed driver assistance system.

著者

小笠原 悟司

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 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society (ISSN:09136339)

巻号頁・発行日

vol.118, no.9, pp.975-980, 1998-09

被引用文献数

31 23 14

著者

川畑 理 大沼 均

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 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society (ISSN:09136339)

巻号頁・発行日

vol.129, no.5, pp.470-475, 2009-05-01

---

In this paper, we present a design method for reducing local losses in a Gate Turn-Off Thyristor (GTO) at turn-on and protecting GTOs, particularly those of the flat-package type used in the high-frequency switching from overheating failure. This method utilizes the measurement of cathode-current spread obtained by infrared measurement. The performance of this was verified observing the gate-current at turn-on in a GTO used in the LC resonant commutation circuit for a power supply rated 10kHz, 1.0MW.

著者

牧島 信吾 上園 恵一 永井 正夫

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 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society (ISSN:09136339)

巻号頁・発行日

vol.130, no.5, pp.663-670, 2010-05-01

被引用文献数

13 5

---

During the voltage saturation of a PWM inverter driving a motor, the torque control characteristics of the motor deteriorate because the controller can control only the phase of the output voltage. The cross-coupling current control scheme is a control scheme for motors, and it can be used to shift from the variable voltage mode to the voltage saturation mode seamlessly, and vice versa. This paper shows numerical simulation results and the torque response when the control scheme is used during voltage saturation.

著者

望月 寛 浅野 晃 佐野 実 高橋 聖 中村 英夫

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 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society (ISSN:09136339)

巻号頁・発行日

vol.126, no.3, pp.337-344, 2006-03-01

被引用文献数

8 1

---

Recently, QAM (Quadrature Amplitude Modulation) transmission is paid to attention in digital modulation method, and it has been used for wireless LAN and digital broadcasting. QAM is a modulation method that puts information on carrier amplitude and phase. So QAM can achieve high-capacity data transmission that the use efficiency of frequency band is good. But QAM has a bad characteristic that is weak to the noise and the interference because distance between each symbol is short. Then we propose the method that not transmission data but CDMA signal, obtained after transmission data is modulated by spread code and multiplexed, is given to each symbol of QAM. And we studied about railway signal system on track circuit as a sample to apply this method. As result of computer simulations, we verified to be able to achieve the improvement of signal to noise ratio by optimizing the constellation map of QAM. We report with the method of a synchronous acquisition.

著者

小笠原 悟司 藤田 英明 赤木 泰文

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 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society (ISSN:09136339)

巻号頁・発行日

vol.115, no.1, pp.77-83, 1994-12-20

参考文献数

5

被引用文献数

41 40

---

This paper deals with the high-frequency leakage current caused by a voltage-source PWM inverter. A nonnegligible amount of leakage current would flow through stray capacitors between stator windings and a motor frame due to a, large step change of the common-mode voltage produced by the PWM inverter. An equivalent circuit for the leakage current is proposed, which is expressed by a series resonant circuit. The analysis applying the equivalent circuit gives us such a conclusion that the connection of a common-mode choke in series between the inverter and motor terminal is not effective to reduce the rms and average value of the leakage current, but effective to reduce the peak value. Furthermore, this paper shows that the modeling and analysis are valid in designing a previously proposed suppression method of the leakage current.

著者

花澤 民雄 アルマズルイ アリ 江頭 虎夫

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 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society (ISSN:09136339)

巻号頁・発行日

vol.123, no.12, pp.1546-1547, 2003-12-01

被引用文献数

1

---

We have done some attempts to understand the mechanism of commutation spark generation in universal motor from the image aspect using a high-speed camera. We have also mentioned about the generation of single and plural number of sparks at one commutator segment and the voltage between brush and commutator segment. This time, we investigated spark generation distribution and their position of the brush, by photographing all the sparks generated during a single-rotation of the motor. As a result, it's become clear that there is increasing of spark generation in the position near the side where the armature coil of the brush is connected.