JPS5539943A - Cascade control system between ddc group - Google Patents

Cascade control system between ddc group

Info

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
Application number
JP11190678A
Other languages
Japanese (ja)
Inventor
Kenji Kojima
Takaaki Kawasaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP11190678A priority Critical patent/JPS5539943A/en
Publication of JPS5539943A publication Critical patent/JPS5539943A/en
Pending legal-status Critical Current

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  • 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
JP11190678A 1978-09-12 1978-09-12 Cascade control system between ddc group Pending JPS5539943A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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