著者

賀屋 和昭

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.107, no.5, pp.569-569, 1987-05-20 (Released:2008-12-19)

著者

奥山 俊昭 藤本 登 松井 孝行 久保田 譲

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.107, no.2, pp.191-198, 1987

被引用文献数

8 11

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

安村 昌之

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.117, no.9, pp.1063-1068, 1997-08-20 (Released:2008-12-19)

参考文献数

5

---

It is desired to develop soft-switching power factor improvement technology and put it into practical use by means of a high-efficiency, low-noise, and low-cost resonant-type converter. Every technology that has been developed and reported so far has many disadvantages as well as advantages, and there are many problems to be solved before they can be put into practical use. In this paper, I am going to explain the structure of the partially capacitor input rectifier circuit that employs soft-switching operation that has been developed a new as the power-feedback-system one-converter circuit. These technologies have enabled us to put the power factor improvement for consumer-use electronic products into practical use.

著者

鳥海 陽平

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.135, no.7, pp.NL7_5-NL7_5, 2015-07-01 (Released:2015-07-01)

著者

姉崎 隆 タンスリヤボン スリヨン 山田 親稔 平田 哲兵 玉城 史朗 加藤 浩

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.135, no.2, pp.74-80, 2015

---

In order for the Okinawan economy to grow independently, creating new businesses is essential. This will require the cultivation of technologies that will form the seeds of those businesses as well as the training of technicians and researchers.  To promote the creation of new businesses and innovation that are "unique to Okinawa," the Institute of Electrical Engineers of Japan set up a cooperative research committee for Okinawa-style robot-embedded/sustainable systems.  We proposed the concept of Okinawa-style robot-embedded systems. To realize this concept, we organized technical meetings and promoted research on this topic. At present, our research is focused on the development of ① a playback-type navigation robot for land and air, ② the learning-based super resolution (LBSR) method and hardware implementation for Bilateral Filter (BF), ③ a goat information and communication technology (ICT), and ④ the Bone Cloud for planning and verifying 3D bone models without performing a surgical procedure. Our promotions are now ongoing.

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

近藤 圭一郎 松岡 孝一 中沢 洋介

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.118, no.7-8, pp.900-907, 1998-07-01 (Released:2008-12-19)

参考文献数

10

被引用文献数

6 24

---

We have been studying the aplication of permanent magnet synchronous motor (PMSM) for railway vehicle traction in order to reduce the weight and size of direct drive traction motor. As a part of this study establishing a current control system of PMSM suitable for railway vehicle traction should be investigated.In this paper we discuss about designing method of current control system mentioned above and suggest a method which is available under the condition of railway vehicle traction, low switching frequency and long digital calculating period. Next we investigate how to decide current response time constant Td and reach a conclusion that it is about 10ms is appropriate under some assumed condition. Then we checked this current control system for railway vehicle traction through experiments and studies of influence of parameter changing. Consequently we can recognize the current control system has satisfactory performance for railway vehicle traction.

著者

佐藤 正一 道木 慎二 石田 宗秋

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.124, no.5, pp.464-470, 2004 (Released:2004-08-01)

参考文献数

8

被引用文献数

8 12

---

This paper deals with the high-frequency equivalent circuits of permanent magnet synchronous motor (PMSM) driven by a PWM inverter. The leakage current (common-mode current) flows through stray capacitance among stator windings and iron core (frame) of an synchronous motor at the switching instants of inverter transistors. A high-frequency equivalent circuits of PMSM are derived based on the frequency characteristics of the high-frequency zero-phase-impedance and line-to-line-impedance of synchronous motor. The validity of the proposed equivalent circuit is confirmed by simulation considering parasitic capacitance of the inverter.

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

森本 茂雄 畠中 啓太 童 毅 武田 洋次 平紗 多賀男

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.112, no.3, pp.292-298, 1992

被引用文献数

22 9

---

Permanent magnet synchronous (PM) motors are widely used for industrial applications. In traction and spindle drives, the constant power operation and wide speed range are desirable. With DC motor drives, these are achieved by the appropriate reduction of the field current as the speed increases. In the PM motor, the direct control of magnet flux is not available. The air-gap flux, however, can be weakened by the direct axis armature reaction. This control technique is called "flux-weakening" instead of "field-weakening". This paper describes a variable speed drive system of PM motor for the constant power and wide speed range operations. In the proposed control system, a novel flux-weakening technique is applied. The current vector is controlled so that the maximum torque per armature current can be obtained at low speeds and the terminal voltage is kept within its limited value at high speeds. The control performances are examined by the simulations and the experimental results.

著者

吉川 大弘 古橋 武 内川 嘉樹

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.115, no.5, pp.642-651, 1995-04-20 (Released:2008-12-19)

参考文献数

10

被引用文献数

1 3

---

There have been growing demands for automatic placement of parts on printed circuit boards (PCBs). Since the parts have wide variety in size and these parts should be placed under various constraints, the automatization of parts placement is a very difficult task. The authors proposed a method using the genetic algorithm (GA) for the automatic placement on highly dense PCBs. The study was, however, done on an imaginary board. Many factors, such as gaps between parts, lining up of parts of same type, etc. were not considered.This paper presents three new coding methods for the automatic placement on the PCBs. The three proposed methods incorporate rotating angle of parts, gaps between parts, forming of parts of same type in lines as well as dense placement of parts. Actual PCBs are used for showing and comparing the effects of the new coding methods. The results show that the proposed methods are feasible for the automatic placement of parts on highly dense PCBs.

著者

吉川 大弘 古橋 武 内川 嘉樹

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.114, no.4, pp.387-392, 1994-04-20 (Released:2008-12-19)

参考文献数

10

被引用文献数

1 1

---

For computer aided design (CAD)/design automation (DA) for printed circuit board (PCB), automatic placement of parts has been strongly needed. It is, however, very difficult to realize the automatic placement, since the parts have wide variety in size and these parts should be placed under various constraints.This paper studies a method of placement on the PCB using genetic algorithm (GA). This paper also studies an application of a new representing method for maintaining diversity of chromosomes to the GA. Simulations are done to show the feasibility of the new automatic placement method. A chromosome is converted into multiple phenotypes by the methods.

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

蓬原 弘一 向殿 政男

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.110, no.3, pp.218-226, 1990

被引用文献数

1 1

---

If sufficient time is allowed for detection, the aerial ultrasonic pulsed radar sensor can detect reflecting objects without being unduly subject to the effect of wind. When used for safety assurance like obstacle detection of automated guided vehicles, the pulsed radar sensor must have such fail-safe characteristics that it can monitor an area wilder than that it is originally designed to monitor when it malfunctions and can produce a hazard-signifying output signal when it stops. The ultrasonic pulsed radar sensor discussed here is in its normal operating state when a short-distance transmitter/receiver signal is received as inspection signal for monitoring its operation. The pulse signal reflected from the obstacle in question, operation monitoring signal, and gate signal are added and converted into a ternary signal. The ternary signal is converted into a binary signal that indicates the normal state of the sensor (logic 1) or the faulty state of the sensor or detection of the obstacle (logic 0). A fail-safe pulsed radar can be realized in this way.