JPS57139813A - Controller - Google Patents
ControllerInfo
- Publication number
- JPS57139813A JPS57139813A JP56025299A JP2529981A JPS57139813A JP S57139813 A JPS57139813 A JP S57139813A JP 56025299 A JP56025299 A JP 56025299A JP 2529981 A JP2529981 A JP 2529981A JP S57139813 A JPS57139813 A JP S57139813A
- Authority
- JP
- Japan
- Prior art keywords
- output
- computer
- fault
- absolute value
- time
- 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
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Testing And Monitoring For Control Systems (AREA)
Abstract
PURPOSE:To raise the reliability for detecting a fault, by automatically detecting the fault of a computer at all times, raising the reliability of a computer control by taking proper steps quickly, and especially providing a simple fault deciding circuit separately from the computer system. CONSTITUTION:An absolute value generator 11 generates an absolute value of an output of a computer 7, it is compared with a prescribed value, and an output of a comparator 12 becomes ''1'' or ''0''. A reset pulse generator 14 commands to detect a fault of the computer 7, an integrator 13 resets its output value to ''0'' at every period tau by its pulse, and otherwise, an output of the integrator 13 shows the time when an output of the computer 7 exceeds a threshold level. In case when the time when the absolute value of the output of the computer 7 is larger than the threshold level of the comparator 12 is long in the period tau, a comparator with holding 16 regards it a fault, outputs ''1'', and outputs ''0'' if said time is short. In short, a fault deciding circuit for comparing the absolute value of the set value of the output and detecting the continuous time is improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56025299A JPS57139813A (en) | 1981-02-23 | 1981-02-23 | Controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56025299A JPS57139813A (en) | 1981-02-23 | 1981-02-23 | Controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57139813A true JPS57139813A (en) | 1982-08-30 |
Family
ID=12162135
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56025299A Pending JPS57139813A (en) | 1981-02-23 | 1981-02-23 | Controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57139813A (en) |
-
1981
- 1981-02-23 JP JP56025299A patent/JPS57139813A/en active Pending
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