Data processing device and data processing method

A data processing device comprising:

• a first definer configured to define a transfer function of a process which is a control target on the basis of an output value from the process and a manipulated variable of the process;
• an analyzer configured to analyze frequency characteristics of a sensitivity function defined based on a transfer function of the process and at least one control parameter of a controller for controlling the process;
• a second definer configured to define a target sensitivity function on the basis of the sensitivity function, a first frequency band included in the frequency characteristics, and a predetermined attenuation factor;
• and
• an adjuster configured to adjust the at least one control parameter to decrease a difference between the sensitivity function and the target sensitivity function.

A data processing method comprising:

• defining a transfer function of a process which is a control target on the basis of an output value from the process and a manipulated variable of the process;
• analyzing frequency characteristics of the output value from the process or frequency characteristics of a sensitivity function defined based on the transfer function of the process and at least one control parameter of a controller for controlling the process;
• defining a target sensitivity function on the basis of the sensitivity function, a frequency band included in the frequency characteristics, and a predetermined attenuation factor;
• and
• adjusting the at least one control parameter to decrease a difference between the sensitivity function and the target sensitivity function.