Patent ID: 11883952
Assignee: THK CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H | IPC B  H

Claim 4:
5. The actuator according to claim 1, wherein the shaft includes a hollow part formed on a tip side of the shaft such that an interior of the shaft is hollow,
wherein the actuator further comprises:
a supply part that supplies a negative pressure to the hollow part;
a flow sensor provided in a middle of an air passage to detect a flow rate of the air flowing through the air passage, the air passage being a passage through which air sucked from the hollow part when supplying the negative pressure to the hollow part flows; and
a pressure sensor provided in a middle of the air passage, to detect a pressure in the air passage, and

wherein the control device controls the linear motion motor, based on, in addition to the strain detected by the strain gauge, the flow rate detected by the flow sensor and/or the pressure detected by the pressure sensor.