電気学会論文誌D(産業応用部門誌)
Online ISSN : 1348-8163
Print ISSN : 0913-6339
ISSN-L : 0913-6339
128 巻, 9 号
選択された号の論文の12件中1~12を表示しています
論文
  • 羽田野 伸彦
    2008 年 128 巻 9 号 p. 1065-1074
    発行日: 2008/09/01
    公開日: 2008/09/01
    ジャーナル フリー
    This paper represents a control method of 3-phase Transformer-less Dynamic Voltage Restorer (DVR). The merit of transformer-less inverter is well recognized. But such a DVR consists of three single-phase inverters with mutually insulated DC power supplies. When the DVR is applied to asymmetrical voltage sag or unbalanced load, the output power from each inverter is not usually equal. Therefore the total energy of the DC power supply cannot be used equally, and the DVR has disadvantage of the DC energy storage size.
    To this problem, the method proposed here provides the technique for controlling the power from each inverter and DC power supply by controlling zero sequence of the DVR output voltage, and realizes the effective use of DC energy.
  • 桂 誠一郎, 大石 潔
    2008 年 128 巻 9 号 p. 1075-1082
    発行日: 2008/09/01
    公開日: 2008/09/01
    ジャーナル フリー
    Artificial acquisition and reproduction of human sensations are basic technologies of communication engineering. For example, auditory information is obtained by a microphone, and a speaker reproduces it by artificial means. Furthermore, a video camera and a television make it possible to transmit visual sensation by broadcasting. On the contrary, since tactile or haptic information is subject to the Newton's “law of action and reaction” in the real world, a device which acquires, transmits, and reproduces the information has not been established. From the point of view, real-world haptics is the key technology for future haptic communication engineering.
    This paper proposes a novel acquisition method of haptic information named “haptograph”. The haptograph visualizes the haptic information like photograph. Since temporal and spatial analyses are conducted to represent haptic information as the haptograph, it is possible to be recognized and to be evaluated intuitively. In this paper, the proposed haptograph is applied to visualization of human motion. It is possible to represent the motion characteristics, the expert's skill and the personal habit, and so on. In other words, a personal encyclopedia is attained. Once such a personal encyclopedia is stored in ubiquitous environment, the future human support technology will be developed.
  • 中井 孝洋, 藤本 博志
    2008 年 128 巻 9 号 p. 1083-1089
    発行日: 2008/09/01
    公開日: 2008/09/01
    ジャーナル フリー
    PM motor drives are widely used for high performance servo applications. However, PM motor has imperfect sinusoidal flux distribution which causes harmonic current. Dead time of inverter and current measurement error leads to harmonic current, too. The repetitive control method was applied to the harmonic current suppression. For the repetitive control which is based on the internal model principle, the characteristic of the harmonic suppression is excellent. However, it amplifies inter-harmonic components. The inter-harmonic components have frequencies with non-integral multiples of the fundamental frequency. Therefore, the feedforward compensation is applied for the harmonic current to improve a suppression characteristic. Authors proposed harmonic current suppression control of PM motor in αβ coordinate by using repetitive perfect tracking control with PWM-hold model. Finally, we show the advantages of proposed method by simulations and experiments.
  • サウット ウメルジャン, 中野 和司
    2008 年 128 巻 9 号 p. 1090-1097
    発行日: 2008/09/01
    公開日: 2008/09/01
    ジャーナル フリー
    This paper presents an application of model-based control techniques to automotive engine speed control systems. Althougt the modeling of nonlinear systems has been carried out for automotive engines including electronic-controlled throttle servo systems, there still remains the difficulty of the strong non-linearity due to the engine friction and manifold pressure functions. This paper proposes a design method of some engine speed control by analyzing the nonlinear systems using sliding-mode control paradigm. In comparison with the map-based control method, the effectiveness of the proposed control method is verified using simulation and experimental results on an experimental system.
  • 井上 馨, 小方 健司, 加藤 利次
    2008 年 128 巻 9 号 p. 1098-1105
    発行日: 2008/09/01
    公開日: 2008/09/01
    ジャーナル フリー
    When the motor speed is reduced by using a regenerative brake, the mechanical energy of rotation is converted to the electrical energy. When the regenerative torque is large, the corresponding current increases so that the copper loss also becomes large. On the other hand, the damping effect of rotation increases according to the time elapse when the regenerative torque is small. In order to use the limited energy effectively, an optimal regenerative torque should be discussed in order to regenerate electrical energy as much as possible. This paper proposes a design methodology of a regenerative torque for an induction motor to maximize the regenerative electric energy by means of the variational method. Similarly, an optimal torque for acceleration is derived in order to minimize the energy to drive. Finally, an efficient motor drive system with the proposed optimal torque and the power storage system stabilizing the DC link voltage will be proposed. The effectiveness of the proposed methods are illustrated by both simulations and experiments.
  • 米田 真, 百目鬼 英雄
    2008 年 128 巻 9 号 p. 1106-1113
    発行日: 2008/09/01
    公開日: 2008/09/01
    ジャーナル フリー
    The position control system with the advantage large torque, low vibration, and high resolution can be obtained by the constant current micro step drive applied to hybrid stepping motor. However loss is large, in order not to be concerned with load torque but to control current uniformly. As the one technique of a position control system in which high efficiency is realizable, the same sensorless control as a permanent magnet motor is effective. But, it was the purpose that the control method proposed until now controls speed. Then, this paper proposed changing the drive method of micro step drive and sensorless drive.
    The change of the drive method was verified from the simulation and the experiment. On no load, it was checked not producing change of a large speed at the time of a change by making electrical angle and carrying out zero reset of the integrator. On load, it was checked that a large speed change arose. The proposed system could change drive method by setting up the initial value of an integrator using the estimated result, without producing speed change. With this technique, the low loss position control system, which employed the advantage of the hybrid stepping motor, has been built.
  • 鶴田 和寛, 佐藤 和也, 牛見 宣博, 藤本 孝
    2008 年 128 巻 9 号 p. 1114-1120
    発行日: 2008/09/01
    公開日: 2008/09/01
    ジャーナル フリー
    To achieve high-speed and high-precision position control for semiconductor product machines and industrial robots, the full-closed feedback control is applied. Many control methods have been proposed for such a system. In general, P,PI/I-PI control which is one of PID control is applied to a lot of industrial applications. However, in case of changing mechanical characters of control target, the parameters of P,PI/I-PI control have to be changed for keeping a good motion performance. In this paper, we propose a new P,PI/I-P control method which is with nonlinear compensator. The algorithm of nonlinear compensator is based on sliding mode control with chattering compensation. The effectiveness of proposed control method is evaluated by using full-closed single axis slider system via point to point control and contour control in the case of changing load. From the experimental results, the proposed control method has robustness in the case of changing acceleration/deceleration of control reference, changing load and low velocity contouring motion.
  • 富樫 仁夫, 比田 一, 上山 健司
    2008 年 128 巻 9 号 p. 1121-1126
    発行日: 2008/09/01
    公開日: 2008/09/01
    ジャーナル フリー
    To reduce costs of inverters, a current detection method using a single shunt resistor is required for motor drive systems in home electrical appliances. In this paper, a method is proposed to correct a voltage reference vector by converting coordinates from a rotating reference frame into a fixed reference frame. Also proposed is a new coordinate transformation method that is appropriate for the correction.
    Authors focused on the undetectable area that exists every 60 degrees in α-β coordinates. When the α-β coordinates in an nπ/3 rotation are defined as αn-βn, the αn-axis can be defined as the central axis in an undetectable area. We propose a coordinate transformation method that converts the voltage vector in the d-q coordinates into uvw phase voltages through αn-βn coordinates then correct it. This method corrects the voltage vector by a very simple algorithm that limits the αn-βn elements.
    The effectiveness of the proposed method is confirmed by simulation and experiment. Currents were clearly detected by using the proposed method. This shows that the proposed method is suitable for position sensor-less drives in permanent magnet synchronous motors.
  • 関根 崇光, 富田 英雄, 小畑 修二, 斎藤 之男
    2008 年 128 巻 9 号 p. 1127-1132
    発行日: 2008/09/01
    公開日: 2008/09/01
    ジャーナル フリー
    As one of the effective dismantlable adhesion method, the ALLOVER method for interior construction using induction heating and thermoplastic adhesive has been proposed. And the uniform heating method to straight steel stud with induction heating applied 3-phase traveling magnetic field using linear induction coils was also proposed. This paper describes the experiments and analysis for uniform heating to extended heating area of flat metals using desired several induction coils. The proposed coil winding methods for uniform heating to wide heating area may be applied not only interior works of tiles or floorboards but also industrial part's heating.
  • —セクショナルドライブ方式印刷機における 非線形制御の適用—
    吉田 世顕, 高木 慎一郎, 武藤 康彦, 申 鉄龍
    2008 年 128 巻 9 号 p. 1133-1139
    発行日: 2008/09/01
    公開日: 2008/09/01
    ジャーナル フリー
    This paper presents a nonlinear register control scheme for the latest type of rotogravure printing presses referred to as the sectional drive system. In the printing presses, where each gravure cylinder is driven by an individual motor, tension fluctuations caused by an upstream register control generate register errors in downstream units. Therefore, development of the control system to reduce the register error propagation to the downstream is a challenging issue in the printing press. First, we propose a nonlinear coordinate transformation for the state variables in order to deal with the printing press dynamics easily. Then, based on the new coordinates, a nonlinear control law is designed with the Lyapunov stability theorem such that the register errors converge to zero. Finally, the performance of the proposed method is demonstrated by simulation and experiment carried out on a practical printing press, and a comparison with a conventional control method is also presented to show the effectiveness of the proposed control scheme.
  • 横倉 勇希, 桂 誠一郎, 大石 潔
    2008 年 128 巻 9 号 p. 1140-1146
    発行日: 2008/09/01
    公開日: 2008/09/01
    ジャーナル フリー
    This paper proposes a motion copying system in order to reproduce motion of human operators. The motion copying system consists of both motion saving system and motion loading system based on multilateral controller. The motion saving system is realized by master systems and a slave system. The motion saving system saves motion of a slave system when human operator moves the master systems. At the same time, identity ratio is introduced to decouple the masters motions. The identity ratio of each master system is calculated by force of all master systems, and are saved to memory. On the contrary, real-world master systems and a virtual-world slave system realize the motion loading system. The motion loading system reproduces the motion using saved motion data and value of the identity ratio. The paper confirms that the motion saving system and motion loading system based on multilateral controller is generalized. The reproduced position and force correspond to the saved ones by the proposed method.
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