Evaluation device and method for rotary drive, corrective manipulated variable setting device and method, control device and method, and program

摘要

An evaluation device for a rotary drive that evaluates periodic velocity fluctuation of the rotary drive is provided. The evaluation device includes a rotational velocity fluctuation detector, a reference signal generator, and a multiplier-accumulator. The rotational velocity fluctuation detector detects rotational velocity fluctuation relative to a reference velocity of the rotary drive. The reference signal generator generates a reference signal, in which the reference signal has a period and a phase angle. The multiplier-accumulator performs a multiply-accumulate operation between the rotational velocity fluctuation detected by the rotational velocity fluctuation detector and the reference signal generated by the reference signal generator, so as to detect a fluctuation intensity at the phase angle of a component having the period, in which the component is included in the rotational velocity fluctuation detected by the rotational velocity fluctuation detector.