Evaluation device, evaluation method and control device
AssigneeOMRON Corporation
InventorsYasushi ONO, Mamoru EGI
Life of this patent
Estimating the term…
Abstract
Provided is an evaluation device that determines the necessity of a notch filter inserted in a control system that controls an electric motor by closed loop control. The evaluation device includes: a characteristic acquisition parts for changing a parameter associated with a characteristic of the notch filter from a first value, which is a prescribed value, to a second value, and acquiring a change in a frequency response characteristic of the electric motor when the notch filter is applied; and a determination parts for determining the necessity of the notch filter based on the change in the frequency response characteristic that has been acquired.
Claims17
An evaluation device that determines the necessity of a notch filter inserted in a control system that controls an electric motor by closed loop control, the evaluation device comprising:
- a characteristic acquisition parts for changing a parameter associated with a characteristic of the notch filter from a first value, which is a prescribed value, to a second value, and acquiring a change in a frequency response characteristic of the electric motor when the notch filter is applied;
- and
- a determination parts for determining the necessity of the notch filter based on the change in the frequency response characteristic that has been acquired.
A control device that controls an electric motor by closed loop control, the control device comprising:
- a speed control parts for generating a torque command for rotating the electric motor;
- a filter parts for applying a notch filter to the torque command;
- a speed detection parts for detecting a rotational speed of the electric motor;
- a characteristic acquisition parts for changing a parameter associated with a characteristic of the notch filter from a first value, which is a prescribed value, to a second value, and acquiring a change in a frequency response characteristic of the electric motor when the notch filter is applied;
- and
- a determination parts for determining the necessity of the notch filter based on the change in the frequency response characteristic that has been acquired.
An evaluation method performed by an evaluation device that determines the necessity of a notch filter inserted in a control system that controls an electric motor by closed loop control, the evaluation method comprising:
- a characteristic acquisition step for changing a parameter associated with a characteristic of the notch filter from a first value, which is a prescribed value, to a second value, and acquiring a change in a frequency response characteristic of the electric motor when the notch filter is applied;
- and
- a determination step for determining the necessity of the notch filter based on the change in the frequency response characteristic that has been acquired.
Dependencies are inferred from the claim text.