Patent ID: 11914348
Assignee: GRIDINC
Field: Control (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A plant operating condition setting support system for supporting a setting of an operating condition of a plant that performs a process wherein the process is formed by a plurality of devices being subject to independent feedback control, impacts from mutual interference between respective feedback control tasks, the plant operating condition setting support system comprising:
a plurality of control devices that subject one or more controlled devices in the plurality of devices to feedback control respectively; and
an operating condition setting support device that provides integrated support for the setting of the plurality of control devices, which perform a plurality of feedback control tasks respectively and independently, wherein
each of the plurality of control devices includes:
a measured value acquisition circuit that acquires a measured value indicating a state of a controlled device;
a control device adjustment parameter acquisition circuit that acquires a proportional gain/integral gain/differential gain (PID) parameter for determining a manipulation variable for control input to the controlled device;
a manipulation variable for control determination circuit that determines the manipulation variable for control based on the measured value acquired by the measured value acquisition circuit and the PID parameter acquired by the control device adjustment parameter acquisition circuit; and
a manipulation variable for control input circuit that inputs the manipulation variable for control determined by the manipulation variable for control determination circuit to the controlled device,
wherein the operating condition setting support device includes:
a measured value multiple acquisition circuit that acquires a plurality of measured values indicating states of the plurality of controlled devices controlled by the plurality of control devices, respectively; and
a control device adjustment parameter determination circuit that determines, based on the plurality of measured values acquired by the measured value multiple acquisition circuit, and a plurality of PID parameter used by each of the plurality of control devices to determine manipulation variables for control input to the plurality of controlled devices, according to a policy learned by deep reinforcement learning,
wherein
the control device adjustment parameter determination circuit determines the plurality of PID parameters according to a policy learned by deep reinforcement learning for learning a policy for determining the plurality of PID parameters, the policy being based on the measured value of the controlled device, the control target value, and the manipulation variable for control occurring when the plant is operated, on a reward value that represents a stability index indicating an evaluation of the measured value, the control target value, and the manipulation variable for control in numerical terms, and on the PID parameter used to determine the manipulation variable for control.