JPS5539943A - Cascade control system between ddc group - Google Patents
Cascade control system between ddc groupInfo
- Publication number
- JPS5539943A JPS5539943A JP11190678A JP11190678A JPS5539943A JP S5539943 A JPS5539943 A JP S5539943A JP 11190678 A JP11190678 A JP 11190678A JP 11190678 A JP11190678 A JP 11190678A JP S5539943 A JPS5539943 A JP S5539943A
- Authority
- JP
- Japan
- Prior art keywords
- cascade control
- groups
- group
- ddc
- lower group
- 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 carry out the cascade control between the groups with reduced troubles by the simple structure by directly transferring the signals in a digital manner between the groups and giving the initiative of the establishment of the cascade control to the lower group.
CONSTITUTION: The groups DDC-1 and DDC-2 transmit the digital output signals DO1 as a request for cascade control and a own condition signal and the partner group receives it as DI1 directly. Hence, the initiative of the cascade control establishment is given to the lower group and the operating signal MV1 of the upper group is temporarily enforced on coincide with the control mark value signal SV2 of the lower group. By carrying out the so called bumpless operation, the cascade control between the groups can be done in a reduced trouble condition by a simple structure.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11190678A JPS5539943A (en) | 1978-09-12 | 1978-09-12 | Cascade control system between ddc group |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11190678A JPS5539943A (en) | 1978-09-12 | 1978-09-12 | Cascade control system between ddc group |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5539943A true JPS5539943A (en) | 1980-03-21 |
Family
ID=14573080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11190678A Pending JPS5539943A (en) | 1978-09-12 | 1978-09-12 | Cascade control system between ddc group |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5539943A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05116857A (en) * | 1991-09-20 | 1993-05-14 | Mitsubishi Electric Corp | In-fire operating device of elevator |
-
1978
- 1978-09-12 JP JP11190678A patent/JPS5539943A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05116857A (en) * | 1991-09-20 | 1993-05-14 | Mitsubishi Electric Corp | In-fire operating device of elevator |
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