Control device for actuator, actuator, valve driving device and abnormality detecting method for actuator
AssigneeMitsubishi Electric Corporation
InventorsSatoshi KAWAMURA, Kenta HATANO
Life of this patent
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Abstract
A control device for a WG actuator includes a feedback control unit for performing feedback control on the WG actuator in such a way that the position of a shaft detected by a position sensor gets close to a target position, and an abnormality detecting unit for providing an instruction to move the shaft in an axial direction for the feedback control unit, and for detecting an abnormality in the WG actuator on the basis of a result of a movement of the shaft, the movement being detected by the position sensor while the feedback control unit performs the instruction.
Claims8
A control device for an actuator, the actuator including a shaft, a motor for causing the shaft to make a reciprocating motion in an axial direction, and a position sensor for detecting a position of the shaft, the control device comprising:
- a feedback controller to perform feedback control on the actuator in such a way that the position of the shaft detected by the position sensor gets close to a target position;
- and
- an abnormality detector to provide an instruction to move the shaft in the axial direction for the feedback controller, and to detect an abnormality in the actuator on a basis of a result of a movement of the shaft, the movement being detected by the position sensor while the feedback controller performs the instruction.
An abnormality detecting method for an actuator, the abnormality detecting method being used by a control device that performs feedback control on the actuator having a shaft, a motor for causing the shaft to make a reciprocating motion in an axial direction, and a position sensor for detecting a position of the shaft, in such a way that the position of the shaft detected by the position sensor gets close to a target position, and
- wherein the control device moves the shaft in the axial direction, and detects an abnormality in the actuator on a basis of a result of a movement of the shaft, the movement being detected by the position sensor during the movement of the shaft.
Dependencies are inferred from the claim text.