Servo parameter adjustment method and adjustment device

An adjustment device that adjusts a servo parameter related to servo control of a motor, the adjustment device comprising:

• an acquisition unit configured to acquire, in a target device with the motor attached, a frequency characteristic of the motor under characteristic acquisition conditions related to the frequency characteristic of the motor and including at least a first condition and a second condition different from each other;
• a first adjustment unit configured to interpolate, based on a first frequency characteristic corresponding to the first condition and a second frequency characteristic corresponding to the second condition, a third frequency characteristic which is a frequency characteristic corresponding to a predetermined section related to a resonance region in the frequency characteristic of the motor;
• a second adjustment unit configured to generate, based on the first frequency characteristic, the second frequency characteristic, and the third frequency characteristic, a frequency characteristic block serving as a reference for adjusting the servo parameter;
• and
• a third adjustment unit configured to adjust, based on the frequency characteristic block, the servo parameter.