Electric machine and display method
AssigneeToshiba Kikai Kabushiki Kaisha
InventorTakamichi Ito
Life of this patent
Estimating the term…
Abstract
An electric machine according to the embodiment includes: a motor; a current controller supplying a current to the motor; a detector detecting a position, a speed, or an acceleration of a shaft of the motor; a controller calculating a torque parameter indicating a torque of the motor based on a current instruction that specifies a supply current to the motor and calculating a speed parameter indicating a rotational speed of the shaft of the motor based on a detection result from the detector; and a display part displaying a graph showing a relation between the torque parameter and the speed parameter.
Claims19
An electric machine comprising:
- a motor;
- a current controller configured to supply a current to the motor;
- a detector configured to detect a position, a speed, or an acceleration of a shaft of the motor;
- a controller configured to calculate a torque parameter indicating a torque of the motor based on a current instruction that specifies a supply current to the motor and calculating a speed parameter indicating a rotational speed of the shaft of the motor based on a detection result from the detector;
- and
- a display part configured to display a graph showing a relation between the torque parameter and the speed parameter, wherein one of a horizontal axis and a vertical axis of the graph represents the torque parameter and the other of the horizontal axis and the vertical axis represents the speed parameter.
A display method performed in an electric machine comprising a motor, a current controller supplying a current to the motor, a detector detecting a position, a speed, or an acceleration of a shaft of the motor, a controller transmitting a current instruction that specifies a supply current to the motor to the current controller, and a display part, the method comprising:
- causing the controller to calculate a torque parameter indicating a torque of the motor based on the current instruction that specifies a supply current to the motor;
- causing the controller to calculate a speed parameter indicating a rotational speed of the shaft of the motor based on a detection result from the detector;
- and
- causing the display part to display a graph showing a relation between the torque parameter and the speed parameter, wherein one of a horizontal axis and a vertical axis of the graph represents the torque parameter and the other of the horizontal axis and the vertical axis represents the speed parameter.
Dependencies are inferred from the claim text.