Abstract: According to one embodiment, a synchronization control apparatus comprising: at least two subordinate controllers configured to control at least two drive sources while feeding back respective displacement amounts measured by at least two displacement sensors in such a manner that at least two rotating frames reaches a position of a target rotation angle indicating an inputted target-position command value; and at least two superior controllers corresponding to respective subordinate controllers, each of the superior controllers being configured to correct the target-position command value by using a correction-value table and output a corrected target-position command value to a corresponding subordinate controller, the correction-value table being a table in which correction values for correcting the target-position command value are registered in advance.

Abstract: According to one embodiment, a parallel link mechanism includes a base portion, a movable portion, a braking unit, motors, links, and a switching unit. The movable portion is separated from the base portion in a first direction. The braking unit is provided between the base portion and the movable portion, and includes braking pads. The motors are provided around the braking unit, and each include a drive shaft extending along a direction intersecting the first direction. The links are each coupled between the drive shafts and the movable portion. The switching unit is provided between the base portion and the movable portion. The switching unit is configured to switch, by moving the braking pads, between a contact state in which the braking pads are in contact with the drive shafts and a non-contact state in which the braking pads are separated from the drive shafts.

Abstract: According to one embodiment, an arm structure includes a base, a first link, a second link, a connecting member, and a gravity compensation mechanism. The first and the second links are rotatable in a vertical direction. One end side of the first link is pivotally attached to the base via a first rotating shaft. One end side of the second link is pivotally attached to another end side of the first link via a second rotating shaft. A length of the first link is same as a length of the second link. The second link rotates around the second rotating shaft. A rotation angle of the second link is twice a rotation angle of the first link. A rotation direction of the second link is opposite to a rotation direction of the first link. The gravity compensation mechanism compensates for torque generated around the first rotating shaft by gravity.

Abstract: According to one embodiment, an arm structure includes a base, a first link, a second link, a connecting member, and a gravity compensation mechanism. The first and the second links are rotatable in a vertical direction. One end side of the first link is pivotally attached to the base via a first rotating shaft. One end side of the second link is pivotally attached to another end side of the first link via a second rotating shaft. A length of the first link is same as a length of the second link. The second link rotates around the second rotating shaft. A rotation angle of the second link is twice a rotation angle of the first link. A rotation direction of the second link is opposite to a rotation direction of the first link. The gravity compensation mechanism compensates for torque generated around the first rotating shaft by gravity.