英国形動力炉制御系の一解析

• 三井田 純一

  日本原子力研究所

• 須田 信英

  日本原子力研究所

書誌事項

タイトル別名

• Stability Analysis of Control Sys for British Type Power Reactors

抄録

The temperature coefficient of reactivity of British type gas cooled reactors becomes positive, as the fuel burn-up proceeds. Instabilities of this type of reactors due to a positive temperature coefficient of reactivity require special considerations in the control system design.<BR>The stability of such a control system was analyzed by means of Nyquist's stability criterion and it was concluded that, <BR>(1) The system is unstable, when its gain is either too high or too low, whose limits are shown in Table II.<BR>(2) Rate action in controllers is favorable, while reset action is not.<BR>(3) Nonlinearities introduced into the linear control system, such as deadband or saturation, make the system unstable even for a moderate gain.<BR>(4) When the discontinuous control is adopted, <BR>a) the system becomes unstable for a lower gain.<BR>b) a stable limit cycle and an unstable one exist for a medium gain.<BR>c) two stable limit cycles and two unstable ones exist for a higher gain. and in any case, the system either diverges or undergoes sustained oscillations corresponding to stable limit cycles.<BR>Some of the results obtained by analog computer are also shown in order to ascertain the results obtained by the above mentioned method.

収録刊行物

• 自動制御

  自動制御 7 (3), 134-141, 1960

  公益社団法人 計測自動制御学会

詳細情報

• CRID: 1390001205359353472
• NII論文ID: 130003765363
• DOI: 10.11499/sicejl1954.7.134
• ISSN: 18838162
• ISSN: 04477235
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可