Title:
REDUNDANCY CONTROL METHOD FOR MAIN AND STANDBY CONTROLLERS
Document Type and Number:
WIPO Patent Application WO/2021/035867
Kind Code:
A1
Abstract:
A redundancy control method for main and standby controllers. In each normal synchronization cycle, the method comprising the steps: A) a main controller acquiring external input variable data, and a standby controller obtaining input variable data from the main controller; B) the main and standby controllers respectively performing a logic operation on the input variable data; and C) performing consistency determination on a result of the logic operation, and outputting the result as output data when the determination result is consistent. By means of optimizing the design of logic synchronization of the main and standby controllers and the arbitration of switching between the main controller and the standby controller, the consistency of the main and standby controllers is ensured, the disturbance caused by the switching of the main and standby controllers is reduced, system downtime is saved, and the uninterrupted and stable operation of a control system is ensured.
Inventors:
TENG ZHANWEI (CN)
LIU GANGLIN (CN)
LIU GANGLIN (CN)
Application Number:
PCT/CN2019/108638
Publication Date:
March 04, 2021
Filing Date:
September 27, 2019
Export Citation:
Assignee:
KYLAND TECHNOLOGY CO LTD (CN)
International Classes:
G05B19/042; G05B9/03
Domestic Patent References:
WO2014161986A1 | 2014-10-09 |
Foreign References:
CN109991899A | 2019-07-09 | |||
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CN201909961U | 2011-07-27 | |||
CN104360916A | 2015-02-18 | |||
CN107300851A | 2017-10-27 | |||
US20150256321A1 | 2015-09-10 | |||
CN103841210A | 2014-06-04 | |||
EP3118694A1 | 2017-01-18 | |||
CN105974879A | 2016-09-28 | |||
JP2008299470A | 2008-12-11 |
Attorney, Agent or Firm:
CHINA ZHENGHE INTELLECTUAL PROPERTY AGENCY (CN)
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