JPH0179103U - - Google Patents
Info
- Publication number
- JPH0179103U JPH0179103U JP1987175475U JP17547587U JPH0179103U JP H0179103 U JPH0179103 U JP H0179103U JP 1987175475 U JP1987175475 U JP 1987175475U JP 17547587 U JP17547587 U JP 17547587U JP H0179103 U JPH0179103 U JP H0179103U
- Authority
- JP
- Japan
- Prior art keywords
- output
- controller
- signal
- failure
- tracking signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 208000024891 symptom Diseases 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000001052 transient effect Effects 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
Landscapes
- Safety Devices In Control Systems (AREA)
- Feedback Control In General (AREA)
Description
第１図および第２図は本考案の一実施例を示す
図で、第１図はバツクアツプ制御装置の構成を示
すブロツク図、第２図は故障発生時の過渡応答を
示す図、第３図は従来装置における過渡応答を示
す図である。
１１……常用制御器、ｓ１１……常用制御器出
力信号、１２……待機制御器、ｓ１２……待機制
御器出力信号、１３……切換器、ｓ１３……制御
信号、１４……比較器、ｓ１４……出力偏差信号
、１５……故障判定器、ｓ１５……切換信号、２
０……トラツキング信号演算器、２１……故障徴
候判定部、ｓ２１……故障徴候信号、２２……ト
ラツキング信号記憶部、２３……積分演算器、２
４……緩慢故障判定部、ｓ２４……緩慢故障信号
、２５……ＡＮＤ演算部、ｓ２５……緩慢故障切
換信号、２６……トラツキング信号発生部、ｓ２
６……トラツキング信号。
1 and 2 are diagrams showing one embodiment of the present invention, in which FIG. 1 is a block diagram showing the configuration of a backup control device, FIG. 2 is a diagram showing a transient response when a failure occurs, and FIG. FIG. 2 is a diagram showing a transient response in a conventional device. 11... Regular controller, s11... Regular controller output signal, 12... Standby controller, s12... Standby controller output signal, 13... Switch, s13... Control signal, 14... Comparator, s14...Output deviation signal, 15...Failure determiner, s15...Switching signal, 2
0... Tracking signal calculator, 21... Failure symptom determination unit, s21... Failure symptom signal, 22... Tracking signal storage unit, 23... Integral calculator, 2
4...Slow failure determination unit, s24...Slow failure signal, 25...AND calculation unit, s25...Slow failure switching signal, 26...Tracking signal generation unit, s2
6...Tracking signal.
Claims (1)
られた常用制御器および待機制御器と、この常用
制御器の出力と待機制御器の出力とを選択的に取
出して出力する如く設けられた切換器と、この切
換器を前記常用制御器の出力と待機制御器の出力
との出力偏差が第１の設定値を越えたとき切換制
御し常用制御器の出力に代えて待機制御器の出力
を選択出力せしめる故障判定器と、前記出力偏差
が一定条件を満たしたときトラツキング信号を発
生させ前記待機制御器出力のトラツキングを行な
うトラツキング信号演算器とを具備し、上記トラ
ツキング信号演算器は、前記出力偏差が前記第１
の設定値より小さな第２の設定値を越えたとき故
障微候信号を発する故障微候判定部と、この故障
徴候判定部から故障徴候信号が発せられた時点の
前記待機制御器の出力を記憶するトラツキング信
号記憶部と、前記故障徴候判定部から故障徴候信
号が発せられた時点から一定時間経過後において
前記故障判定器から出力信号が送出されたとき前
記トラツキング信号記憶部に記憶されている出力
を前記待機制御器にトラツキング信号として与え
る手段とからなることを特徴とするバツクアツプ
制御装置。 A regular controller and a standby controller provided to input the same process quantity, respectively; a switch provided to selectively take out and output the output of the regular controller and the output of the standby controller; This switching device is switched when the output deviation between the output of the regular controller and the output of the standby controller exceeds a first set value, and the output of the standby controller is selectively outputted in place of the output of the regular controller. The tracking signal calculator includes a failure determination device and a tracking signal calculator that generates a tracking signal and tracks the output of the standby controller when the output deviation satisfies a certain condition. 1st
a failure symptom determination unit that issues a failure symptom signal when a second set value smaller than the set value of and an output stored in the tracking signal storage unit when an output signal is sent from the failure determiner after a certain period of time has elapsed from the time when the failure symptom signal was issued from the failure symptom determiner. and means for providing a tracking signal to the standby controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17547587U JPH0639362Y2 (en) | 1987-11-17 | 1987-11-17 | Backup controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17547587U JPH0639362Y2 (en) | 1987-11-17 | 1987-11-17 | Backup controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0179103U true JPH0179103U (en) | 1989-05-26 |
| JPH0639362Y2 JPH0639362Y2 (en) | 1994-10-12 |
Family
ID=31467266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17547587U Expired - Lifetime JPH0639362Y2 (en) | 1987-11-17 | 1987-11-17 | Backup controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0639362Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011103071A (en) * | 2009-11-11 | 2011-05-26 | Hitachi Ltd | Multiplexing control device |
| JP2014199482A (en) * | 2013-03-29 | 2014-10-23 | 株式会社東芝 | Plant monitoring and control system, control device thereof, and plant monitoring and control method |
-
1987
- 1987-11-17 JP JP17547587U patent/JPH0639362Y2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011103071A (en) * | 2009-11-11 | 2011-05-26 | Hitachi Ltd | Multiplexing control device |
| JP2014199482A (en) * | 2013-03-29 | 2014-10-23 | 株式会社東芝 | Plant monitoring and control system, control device thereof, and plant monitoring and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0639362Y2 (en) | 1994-10-12 |
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