JPS5696301A - Protection method for automatic control system - Google Patents
Protection method for automatic control systemInfo
- Publication number
- JPS5696301A JPS5696301A JP17292579A JP17292579A JPS5696301A JP S5696301 A JPS5696301 A JP S5696301A JP 17292579 A JP17292579 A JP 17292579A JP 17292579 A JP17292579 A JP 17292579A JP S5696301 A JPS5696301 A JP S5696301A
- Authority
- JP
- Japan
- Prior art keywords
- output
- abnormality
- control
- following
- switch
- 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.)
- Pending
Links
Landscapes
- Safety Devices In Control Systems (AREA)
Abstract
PURPOSE: To hold the state before abnormality occurrence at the abnormality occurrence time to prevent danger generated secondarily, by following and storing the control level of the amplifier output at the normal operation time and by stopping following and storing to perform processings when the abnormality at a set position is detected.
CONSTITUTION: When the abnormality of target value setting part 1 or target value detecting part 8 is detected by abnormality detecting part 11, the detection signal acts upon memory part 12, operation control part 15, and change-over switch part 16, and following of memory part 12 which follows and stores the output of operational amplifying part 3 is stopped to store output O1 of amplifying part 3 which has been driven till now, and switch 16 is switched to the (b) side. The output of memory part 12 and the output of adjusting setting equipment 13 are subjected to the addition operation in 14 to obtain output signal O2. Signal O2 is compared with the output of detecting part 6 in comparing part 4 through switch 16 and becomes a command for the minor loop, and the operation can be continued without stopping the operation. If setting equipment 13 is adjusted manually as required, the system is operated semiautomatically, and control part 15 has a function to control levels of signals O1 and O2 to the same and transfers the system to automatic control without shock at the abnormality recovery time.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17292579A JPS5696301A (en) | 1979-12-28 | 1979-12-28 | Protection method for automatic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17292579A JPS5696301A (en) | 1979-12-28 | 1979-12-28 | Protection method for automatic control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5696301A true JPS5696301A (en) | 1981-08-04 |
Family
ID=15950888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17292579A Pending JPS5696301A (en) | 1979-12-28 | 1979-12-28 | Protection method for automatic control system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5696301A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60112802U (en) * | 1984-01-09 | 1985-07-31 | バブコツク日立株式会社 | Automatic switching control device |
| JP2007113977A (en) * | 2005-10-19 | 2007-05-10 | Hara Doki Kk | Multifunctional tape measure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5189984A (en) * | 1975-02-05 | 1976-08-06 |
-
1979
- 1979-12-28 JP JP17292579A patent/JPS5696301A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5189984A (en) * | 1975-02-05 | 1976-08-06 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60112802U (en) * | 1984-01-09 | 1985-07-31 | バブコツク日立株式会社 | Automatic switching control device |
| JP2007113977A (en) * | 2005-10-19 | 2007-05-10 | Hara Doki Kk | Multifunctional tape measure |
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