Control system, motor control apparatus and machine-learning apparatus

An object of the present invention is to provide a system capable of suppressing the mechanical resonance of a control object even in a case that at least one of an object to be held and a holding state changes. The system comprises: a notch filter which performs a filtering processing to an instruction used to control a machine tool capable of holding an object to be held by feedback control; a data acquisition part 1331 which acquires a work information and a holding state of the work; and an inference part 1332 which infers an oscillation frequency of the object to be held by inputting the work information and the holding state of the work acquired by the data acquisition part 1331 into a trained model used to infer the oscillation frequency of the object to be held from the work information and the holding state of the work. The notch filter sets the cutoff frequency to the oscillation frequency inferred by the inference part 1332.