US 12,339,652 B2
Facility diagnosis device and facility diagnosis method
Shuichi Nishino, Tokyo (JP); Yuichi Sakurai, Tokyo (JP); and Kazuyuki Tashiro, Tokyo (JP)
Assigned to HITACHI, LTD., Tokyo (JP)
Filed by HITACHI, LTD., Tokyo (JP)
Filed on Jun. 9, 2022, as Appl. No. 17/836,976.
Claims priority of application No. 2021-99898 (JP), filed on Jun. 16, 2021.
Prior Publication US 2022/0404821 A1, Dec. 22, 2022
Int. Cl. G05B 23/02 (2006.01)
CPC G05B 23/0235 (2013.01) [G05B 23/0221 (2013.01); G05B 23/0283 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A facility diagnosis system comprising:
a robot having a plurality of arms, each arm having a motor driving the arm and a current sensor measuring a current of the motor; and
a central processing unit (CPU) coupled to the robot via a network, the CPU programmed to:
store information including an operation control method for preventing deterioration of the plurality of arms of the robot for each of a plurality of predetermined deterioration prevention modes,
calculate a predetermined key performance indicator (KPI) by using a deterioration degree predicted for each of the plurality of predetermined deterioration prevention modes for the plurality of arms of the robot, and determine whether the predetermined KPI satisfies a predetermined condition,
determine a deterioration prevention mode that should be executed based on a satisfaction determination result, and
output control information to the robot according to the deterioration prevention mode that should be executed, the control information defining an operation load for each arm of the robot,
wherein the robot is configured to control the operation load of each arm based on the control information.