US 11,886,169 B2
Control apparatus
Manabu Sasamoto, Tokyo (JP); Hidenori Omiya, Tokyo (JP); Yusaku Otsuka, Tokyo (JP); and Teruaki Sakata, Tokyo (JP)
Assigned to Hitachi, Ltd., Tokyo (JP)
Filed by Hitachi, Ltd., Tokyo (JP)
Filed on Dec. 10, 2021, as Appl. No. 17/547,392.
Claims priority of application No. 2020-216130 (JP), filed on Dec. 25, 2020.
Prior Publication US 2022/0206475 A1, Jun. 30, 2022
Int. Cl. G05B 19/418 (2006.01)
CPC G05B 19/41815 (2013.01) [G05B 19/4183 (2013.01); G05B 19/41855 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A control apparatus included in a distributed control system, comprising:
at least one processor configured to:
synchronize the control apparatus with another control apparatus included in the distributed control system in terms of time;
control to receive information from the another control apparatus;
add synchronization time information to the information and store the resulting information in at least one memory;
set an area of the at least one memory according to a time difference of the information;
select shared data from the information stored in the at least one memory;
calculate a control command for a control target;
store the selected shared data in the at least one memory,
transmit the selected shared data; and
calculate the control command for the control target based on the transmitted shared data,
wherein the time difference of the information is a difference from an acquisition time at which the control apparatus acquires first information regarding the control target from a first sensor and another acquisition time at which the another control apparatus acquires second information regarding the control target from a second sensor.