Patent ID: 11880174
Assignee: OMRON CORPORATION
Field: Control (Instruments)
Classification: CPC G | IPC G

Claim 8:
9. A disturbance suppression method that suppresses an influence of a disturbance on a control system,
the control system including a controlled target and a PID controller configured to output a PID manipulated variable to the controlled target so as to eliminate a deviation between a target value and a controlled value, and
the disturbance suppression method comprising:
predicting a disturbance manipulated variable that acts in response to a disturbance applied to the control system so as to cancel the disturbance;
performing PID tuning on the control system to adjust a control parameter of the PID controller to acquire a dead time representing a period from when the PID manipulated variable is changed to when the controlled value starts to change;
receiving a start signal related to a disturbance occurrence timing from an outside and acquiring a disturbance start time representing a period from a time point at which the start signal is input to a time point at which the controlled value starts to be affected by the disturbance;
predicting a disturbance manipulated variable application timing based on the dead time and the disturbance start time; and
applying the disturbance manipulated variable to the PID manipulated variable based on the disturbance manipulated variable application timing.