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

Claim 0:
1. A disturbance suppression apparatus 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,
the disturbance suppression apparatus comprising:
a disturbance manipulated variable prediction unit configured to predicts a disturbance manipulated variable that acts in response to a disturbance applied to the control system so as to cancel the disturbance;
a disturbance manipulated variable application unit configured to be capable of applying the disturbance manipulated variable to the PID manipulated variable; and
a timing prediction device configured to predicts a disturbance manipulated variable application timing at which the disturbance manipulated variable is to be applied to the PID manipulated variable, and
the timing prediction device including
a dead time acquisition unit configured to performs 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,
a disturbance start time acquisition unit configured to receives a start signal related to a disturbance occurrence timing from an outside and acquires 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, and
a timing prediction unit configured to predicts the disturbance manipulated variable application timing based on the dead time and the disturbance start time.