A remote-control apparatus, comprising at least one processor, wherein:
- the at least one processor receives a measurement value related to equipment from a local-control apparatus;
- the at least one processor calculates a control value using the measurement value and a delay amount;
- the control value is calculated from the delay amount and the measurement value as an output of a model;
- the at least one processor transmits the control value to the local-control apparatus;
- the local-control apparatus controls the equipment using the control value when there is control delay caused by communication delay between the remote-control apparatus and the local-control apparatus;
- and
- the control delay is derived from the delay amount and the measurement value.