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Journal Articles

Upgrade of monitoring and operation systems for the MLF-GCS base on EPICS and CSS

Oi, Motoki; Sakai, Kenji; Watanabe, Akihiko; Akutsu, Atsushi; Meigo, Shinichiro; Takada, Hiroshi

JPS Conference Proceedings (Internet), 8, p.036007_1 - 036007_5, 2015/09

This paper reports on upgrading of the monitor and operation (MO) system for a general control system (GCS) of the Materials and Life science experimental Facility (MLF) at J-PARC. The MLF-GCS consists of programmable logic controllers (PLCs), operator interfaces (OPIs) for integral control and interlock systems, shared servers, and so on. It is controlling various components of the pulsed spallation neutron source such as a mercury target and hydrogen moderators. The MO system is used for monitoring, alarm notification and remote control from the MLF control room. The GCS has been working well as expected, but current MO system which consists of the OPIs and data servers based on iFix has some problems in view of sustainable maintenance because of its poor flexibility of supported OS and software version compatibility. To overcome the problems, we upgraded the MO system to be operated using the framework of EPICS, the OPI of Control System Studio (CSS) and the server software of Postgre SQL. This improves versatility of the MO system, enabling to run on various platforms such as Windows, Linux and Mac OS. At first, we made a prototype MO system, which processed 100 points of data and 5 operation screens and verified that the MO system functions correctly. Then we made full spec MO system which processes the data point of 7000 and operation screens of 130. It was operated in parallel with the current system to evaluate its performance with real data such as data transmission speed from PLCs, control functions from OPI, storage capability of servers and long-term reliability. As results, the new MO system achieved the communication speed of 2 Hz and its operability compatible to the current system. Now, we are operating and debugging it in comparison with the current system during the operating period as a preparation for the system replacement at the end of 2014.

Journal Articles

Status and prospect of JT-60 plasma control and diagnostic data processing systems for advanced operation scenarios

Kurihara, Kenichi; Yonekawa, Izuru; Kawamata, Yoichi; Sueoka, Michiharu; Hosoyama, Hiroki*; Sakata, Shinya; Oshima, Takayuki; Sato, Minoru; Kiyono, Kimihiro; Ozeki, Takahisa

Fusion Engineering and Design, 81(15-17), p.1729 - 1734, 2006/07

 Times Cited Count:13 Percentile:27.84(Nuclear Science & Technology)

A large tokamak fusion device JT-60 is expected to explore more advanced tokamak discharge scenario towards the ITER and a future power reactor. We believe the following experimental issues are expected to be solved in JT-60. To clarify how to keep a steady-state plasma with high performance, and how to avoid plasma instabilities almost completely. By stimulus of this motivation, several essential development and modifications of plasma control and data acquisition systems have been performed in JT-60. In this report, we discuss the developments to improve the JT-60 plasma control and data acquisition systems. In addition, a future plasma control and data acquisition systems leading to a standard design for a power reactor is envisaged on the basis of the 20-year plasma operation experiences.

Journal Articles

Summary of 3GeVRCS control system

Takahashi, Hiroki; Sakaki, Hironao; Sako, Hiroyuki; Yoshikawa, Hiroshi; Kato, Yuko*; Sugimoto, Makoto*; Kawase, Masato*

Proceedings of 1st Annual Meeting of Particle Accelerator Society of Japan and 29th Linear Accelerator Meeting in Japan, p.233 - 235, 2004/08

3GeVRCS send the beam of a different parameter to both the institutions of MLF and 50GeVMR. Therefore, 3GeVRCS Control System is required to supervise by distinguishing the beam for every institution correctly. Moreover, since a parameter change is made during continuation operation, without suspending an accelerator, it is required that the beam loss by operation should be reduced as much as possible. This report shows the examination and design situation of 3GeVRCS control system that aim at these realizations.

JAEA Reports

The Control system of JFT-2M tokamak auxiliary subsystem

Okano, Fuminori; Suzuki, Sadaaki

JAERI-Tech 2003-059, 57 Pages, 2003/06

JAERI-Tech-2003-059.pdf:11.92MB

no abstracts in English

Journal Articles

A Design of distributed control system for accelerator of JAERI tandem facility

Ozaki, M.*; Hanashima, Susumu

Dai-15-Kai Tandemu Kasokuki Oyobi Sono Shuhen Gijutsu No Kenkyukai Hokokushu, p.82 - 85, 2003/03

no abstracts in English

Journal Articles

Development of a control system for a heavy object handling manipulator; Application to a remote maintenance system for ITER blanket module

Yoshimi, Takashi*; Kakudate, Satoshi; Tada, Eisuke; Tsuji, Koichi*; Miyagawa, Shinichi*; Kubo, Tomomi*

Nippon Robotto Gakkai-Shi, 19(6), p.766 - 774, 2001/09

no abstracts in English

JAEA Reports

Devdopment of an intellectual maintenance management system; Development of trouble detection and troubleshooting evaluation system

; ; Yoshikawa, Shinji

PNC-TN9410 98-023, 29 Pages, 1998/03

PNC-TN9410-98-023.pdf:1.33MB

Many research activities are conducted to enhance cost performance and safety of nuclear power plants operation and maintenance. Concept of autonomous operating system to equal the role of operators and of maintenance personnel with artificial intelligence and autonomous robots has been developed. An intellectual maintenance management system has been developed to be equipped with decision making functions of maintenance personnel. The intellectual maintenance management system is in charge of maintenance function of an autonomous plant, which consists of plant-wide monitoring, evaluation of component integrity, and scheduling of maintenance activities. In other words, this system should be equipped with preventive maintenance and corrective maintenance functions those are currently loaded on personnel. In this report, we discussed condition monitoring maintenance in the preventive maintenance. We also reported a sensor validation system development for machinery condition monitoring and diagnosis. We adopted distributed and cooperative system construction technique, which is expected recently in applications to large-scale plants. This system has inter-agent communication function for signal transmission and reception among distributed physics models of machineries. The system has been constructed for water / steam system of the LMFBR power plant. The system has been validated to be capable of cooperative sensor validation by the distributed set of agents, with quantitative indication of sensor deviation based on a newly developed fuzzy algorithm with inter-agent cooperation. The derived reference parameter value from the inter-agent evaluations also stands for the alternative measurment to the malfunctioned sensor.

Journal Articles

Instrumentation and control systems of JRR-3M

; Murayama, Yoji; Takayanagi, Masaji; Ara, Katsuyuki

IAEA-TECDOC-973, 0, p.113 - 120, 1997/10

no abstracts in English

JAEA Reports

None

PNC-TJ1632 97-001, 139 Pages, 1997/03

PNC-TJ1632-97-001.pdf:2.91MB

no abstracts in English

Journal Articles

Status of control system for the JAERI tandem accelerator

Proc. of 11th Symp. on Accelerator Sci. and Technol., p.519 - 521, 1997/00

no abstracts in English

JAEA Reports

Study on large scale knowledge base with real time operation for autonomous nuclear power plant(1); Basic concept and expecting performanse

; ; Yoshikawa, Shinji; Ozawa, kenji

PNC-TN9410 96-101, 40 Pages, 1996/04

PNC-TN9410-96-101.pdf:1.73MB

Since it is desired to enhance availability and safety of nuclear power plants operation and maintenance by removing human factor, there are many researches and developments for intelligent operation or diagnosis using artificial intelligennce (AI) technique. We have been developing an autonomous operation and maintenance system for nuclear power plants by substituting AI's and intelligent robots. It is indispensable to use various and large scale knowledge relative to plant design, operation, and maintenance, that is, whole life cycle data of the plant for the autonomous nuclear power plant. These knowledge must be given to AI system or intelligent robots adequately and opportunely. Moreover, it is necessaly to insure real time operation using the large scale knowledge base for plant control and diagnosis performance. We have been studying on the large scale and real time knowledge base system for autonomous plant. In the report, we would like to present the basic concept and expecting performance of the knowledge base for autonomous plant, especialy, autonomous control and diagnosis system.

Journal Articles

Status report of the control system for the JAERI tandem accelerator

Dai-9-Kai Tandemu Kasokuki Oyobi Sono Shuhen Gijutsu No Kenkyukai Hokokushu, 0, p.57 - 59, 1996/00

no abstracts in English

JAEA Reports

Implementation of an MRACnn System on an FBR Building Block Type Simulator

Ugolini; Yoshikawa, Shinji; Ozawa, kenji

PNC-TN9410 95-253, 13 Pages, 1995/10

PNC-TN9410-95-253.pdf:0.5MB

This report presents the implementation of the a model reference adaptive control system based on the artificial neural network technique (MRAC$$_{nn}$$) in a fast breeder reactor (FBR) building block type (BBT) simulator representing the Monju prototype reactor. The purpose of this report is to improve the control of the outlet steam temperature of the three evaporators of the Monju prototype reactor. The connection between the MRAC$$_{nn}$$ system and the BBT simulator is achieved through an external shared memory accessible by both systems. The MRAC$$_{nn}$$ system calculates the demand for the position of the feedwater valve replacing the signal of a PID controller collocated inside the heat transport system model of the Monju prototype reactor. Two series of simulation tests havc been performed, one with one loop connected to the MRAC$$_{nn}$$ system (leaving the remaining two connected to the original PID controller), and the other with three loops connected to the MRAC$$_{nn}$$ system. In both simulation tests the MRAC$$_{nn}$$ system performed better than the PID controller, keeping the outlet steam temperature of the evaporators closer to the required set point value through all the transients.

Journal Articles

JAEA Reports

Design concept of control system for cryogenic distillation columns of fusion reactor

Yamanishi, Toshihiko; Okuno, Kenji

JAERI-M 93-162, 23 Pages, 1993/09

JAERI-M-93-162.pdf:0.59MB

no abstracts in English

Journal Articles

Concurrent control system for the JAERI tandem accelerator

; ; *; *; *; *

Proc. of the 9th Symp. on Accelerator Science and Technology, p.86 - 88, 1993/00

no abstracts in English

Journal Articles

The Control system for the JAERI tandem particle accelerator using transputers

; ; *; *; *; *

Transputer/Occam Japan 5, p.69 - 81, 1993/00

no abstracts in English

Journal Articles

Concurrent control system for the JAERI tandem accelerator

; ; ; Tsukihashi, Yoshihiro

KEK-PROC-92-15, p.333 - 335, 1992/12

no abstracts in English

JAEA Reports

Program package for control system design and analysis, DPACS/J

Kurihara, Kenichi; *; Nakamura, Yukiharu; Kimura, Toyoaki

JAERI-M 89-126, 387 Pages, 1989/09

JAERI-M-89-126.pdf:7.6MB

no abstracts in English

Journal Articles

Forth-NODAL: Concept and preliminary

Kawarasaki, Yuki; Sugimoto, Masayoshi

Proceedings of the 7th Symposium on Accelerator Science and Technology, p.262 - 263, 1989/00

no abstracts in English

23 (Records 1-20 displayed on this page)