著者
美多 勉 平田 光男 村田 健一
出版者
The Institute of Electrical Engineers of Japan
雑誌
電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)
巻号頁・発行日
vol.115, no.8, pp.1002-1011, 1995-07-20 (Released:2008-12-19)
参考文献数
9
被引用文献数
7 10

This paper reviews a disturbance canceling control based on a disturbance observer from the view point of servo controllers and gives several new points of this control methodology. Especially, the extended H∞ control, previously proposed by authors, is proven to be a special type of such a disturbance canceling controller which has an ability to shape the frequency response of the complementary sensitivity function.

7 0 0 0 OA 次世代の制御

著者
美多 勉 平田 光男
出版者
一般社団法人 電気学会
雑誌
電気学会誌 (ISSN:13405551)
巻号頁・発行日
vol.116, no.9, pp.599-602, 1996-08-20 (Released:2008-04-17)
参考文献数
3
著者
鈴木 雅康 平田 光男
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.54, no.2, pp.194-200, 2018 (Released:2018-02-20)
参考文献数
15
被引用文献数
1

This paper is concerned with a control problem for linear systems by means of pulse-width-modulation (PWM)-type input. Since the PWM input system is nonlinear in terms of the duty ratio, its analysis and design for precision control is in general difficult. Nevertheless it turns out that the discrete-time systems on the sampling instants can be exactly transformed to single input linear systems by making the number and center-locations of pulses variable, where the fact that the sets of the vector-values of the input terms are convex is used. In this paper, by utilizing the above fact further, we propose a method exactly transforming the nonlinear discrete-time systems to multi-input linear systems.
著者
平田 光男 城所 隆弘 上田 伸治
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.129, no.9, pp.938-944, 2009-09-01 (Released:2009-09-01)
参考文献数
9
被引用文献数
16 16

This paper proposes a new design method of nanoscale servo control for a Galvano scanner by using FFSC (frequency-shaped final-state control) method. In the Galvano scanner, it is important to reduce the residual vibration after positioning; further, this scanner must be robust to the variation of the resonance modes of the plant. In this paper, a feedforward input is designed by using FFSC by considering not only nominal performance but also robust performance. Simulations and experimental results are shown to evaluate the effectiveness of the proposed method.
著者
大角 洸平 大塚 敏之 平田 光男 塩谷 政典
出版者
一般社団法人 日本鉄鋼協会
雑誌
鉄と鋼 (ISSN:00211575)
巻号頁・発行日
vol.99, no.4, pp.275-282, 2013 (Released:2013-03-26)
参考文献数
16
被引用文献数
1

In this paper, a control problem of temperature dispersion in steel cooling is formulated as model predictive control (MPC) of a probability density function (PDF). The input of MPC is optimized for dynamics of the PDF approximated by the Monte Carlo method, which is called particle MPC (PMPC). Simulation results of PMPC are presented to show the potential effectiveness of dispersion control.
著者
鈴木 雅康 平田 光男
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.52, no.4, pp.205-212, 2016 (Released:2016-04-15)
参考文献数
14
被引用文献数
1 2

This paper is concerned with the behavior of second-order continuous-time LTI systems with the pulse-width-modulation (PWM) input on sampling instants. The input term of the difference equation describing the state transition is a nonlinear map of the control parameter of the rectangular wave, i.e., duty ratio. It is shown that the nonlinearity can be exactly compensated by varying the center of each rectangular wave as well as its duty ratio.
著者
平田 光男 劉 康志 美多 勉 山口 高司
出版者
The Society of Instrument and Control Engineers
雑誌
計測自動制御学会論文集 (ISSN:04534654)
巻号頁・発行日
vol.29, no.1, pp.71-77, 1993-01-31 (Released:2009-03-27)
参考文献数
6
被引用文献数
13 18

The purpose of the head positioning control of hard disk drives is to move the magnetic head onto the desired track swiftly and to keep it on track precisely against various disturbances and plant uncertainty at high frequency. In this paper, we apply H∞ control to the head positioning of hard disk drives. The advantage of H∞ control is that it yields robust feedback system and the trade-off between various specs is easily incorporated into the design. Further, to obtain a good transient response, we adopt the two-degree freedom control scheme. Experimental results are presented to demonstrate the control effects.
著者
平田 光男 佐藤 隆之 劉 康志 美多 勉
出版者
The Society of Instrument and Control Engineers
雑誌
計測自動制御学会論文集 (ISSN:04534654)
巻号頁・発行日
vol.34, no.7, pp.741-748, 1998-07-31 (Released:2009-03-27)
参考文献数
12

In this paper, we consider an H∞ problem with unstable weighting functions. Such weightings are used to achieve asymptotically disturbance attenuation and/or asymptotically tracking to reference input. Such problems cannot be handled by the standardH∞ control theory. To this problem, we present a necessary and sufficient condition for the existence of a solution by using Riccati inequalities. This condition needs no assumptions on the jω invariant zeros of G12 and G21.
著者
浅井 徹 平田 光男
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.54, no.3, pp.147-151, 2015-03-10 (Released:2015-05-26)
参考文献数
10
被引用文献数
3
著者
平田 光男 荻原 努 岡本 仁史 足立 修一 長村 謙介 小林 真也
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.127, no.11, pp.1133-1140, 2007-11-01
参考文献数
8

We have developed the shift lever with a spring connected link. It can detect the reaction force to the operator by using inexpensive displacement sensors such as potentiometers. For this system, we propose a model-based power assist control method. The proposed control system is composed of a reference generator and a feedback controller. The reference generator is introduced to generate an ideal reaction force to the operator. The feedback controller is designed by <i>H</i><sub>&infin;</sub> control theory to achieve disturbance attenuation. The effectiveness of the proposed method is shown by experiments.
著者
唐 東豪 野波 健蔵 平田 光男 小川 秀明 谷口 義弘
出版者
一般社団法人日本機械学会
雑誌
日本機械学會論文集. C編 (ISSN:03875024)
巻号頁・発行日
vol.66, no.649, pp.2981-2987, 2000-09-25
被引用文献数
2

This paper is concerned with a study of the high performance realization of electronic engrave technology. Using actual piezo actuator for ultra-high speed electronic engrave machine, we designed several control systems to realize a good performance, after the system identification and modeling. The designed control strategies consist of (i) LQI servo control, (ii) Two-degree-of-freedom control system, (iii) Sliding mode control with observer, (iv) Sliding mode control with output feedback. Incidentally, we also find out the compulational speed limit of DSP system via the experiments. We realized the good performance using the two-degree-of-freedom control and the sliding mode control with observer. The most important contribution of this study is that the experimental results can be directly used to commercial machine.