JPS554626A - Driving method of proportional controller - Google Patents
Driving method of proportional controllerInfo
- Publication number
- JPS554626A JPS554626A JP7714378A JP7714378A JPS554626A JP S554626 A JPS554626 A JP S554626A JP 7714378 A JP7714378 A JP 7714378A JP 7714378 A JP7714378 A JP 7714378A JP S554626 A JPS554626 A JP S554626A
- Authority
- JP
- Japan
- Prior art keywords
- comparator
- point
- output
- circuit
- voltage
- 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
- Feedback Control In General (AREA)
Abstract
PURPOSE: To reduce the cost of the driving method of a proportional controller by positively feeding an output signal back by applying an operation signal to the non- inversion input of a voltage comparator, and then by applying a voltage by the feed current of the proportional controller to the inversion input via a primary delay element.
CONSTITUTION: The output signal of present-value indication circuit 1 is compared with that of desired-value indication circuit 2 by differential differentiating circuit 8, differentiation is carried on until a difference between both the signals becomes zero, and the operation signal of the analog value of the differentiation result is applied to non-inversion input point (a) of voltage comparator 5. The output of circuit 2 is applied to point (a) via resistance 8 to limit the inferior of the output of circuit 3. The output of comparator 5, positively fed back to point (a) via resistances 16 and 6, drives transistor 10 to flow a feed current to solenods 11 of the proportional controller. A voltage at point (b) equivalent to this current is applied to inversion input point (c) of comparator 5 via primary delay elements 13 and 14. Consequently, comparator 5 outputs a driving signal of a string of pulses whose duty varies with the operation signal. Therefore, a triangle-wave voltage generator is unneeded and the cost can be reduced.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7714378A JPS554626A (en) | 1978-06-26 | 1978-06-26 | Driving method of proportional controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7714378A JPS554626A (en) | 1978-06-26 | 1978-06-26 | Driving method of proportional controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS554626A true JPS554626A (en) | 1980-01-14 |
Family
ID=13625568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7714378A Pending JPS554626A (en) | 1978-06-26 | 1978-06-26 | Driving method of proportional controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS554626A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58122105U (en) * | 1982-02-08 | 1983-08-19 | 三菱電機株式会社 | Control device for proportional control solenoid valve |
-
1978
- 1978-06-26 JP JP7714378A patent/JPS554626A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58122105U (en) * | 1982-02-08 | 1983-08-19 | 三菱電機株式会社 | Control device for proportional control solenoid valve |
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