A fiber includes M primary cores and N redundant cores, where M an integer is greater than two and N is an integer greater than one. Interferometric circuitry detects interferometric pattern data associated with the M primary cores and the N redundant cores when the optical fiber is placed into a sensing position. Data processing circuitry calculates a primary core fiber bend value for the M primary cores and a redundant core fiber bend value for the N redundant cores based on a predetermined geometry of the M primary cores and the N redundant cores in the fiber and detected interferometric pattern data associated with the M primary cores and the N redundant cores. The primary core fiber bend value and the redundant core fiber bend value are compared in a comparison. The detected data for the M primary cores is determined reliable or unreliable based on the comparison. A signal is generated in response to an unreliable determination.

A computer-assisted system includes an instrument manipulator assembly including a preload assembly and a motor, an insertion assembly configured to control a position of the instrument manipulator assembly, and a motor controller coupled to the preload assembly. The motor controller is configured to actuate the preload assembly to control an amount of preload applied by the preload assembly to the motor and actuate the preload assembly to apply a low preload in response to detecting that a sterile adapter is mounted to the instrument manipulator assembly.

A permanent magnet brushless motor, robot joint, a servo actuator, and a robot are provided. The motor is of fractional-slot and inrunner type, including a stator (1) and a rotor (2). The stator (1) includes a stator iron core (10) and a stator winding, the stator winding is a concentrated winding, and the stator iron core (10) has an integral structure. The stator iron core includes a stator yoke and stator teeth, the stator teeth include a plurality of stator teeth (102) protruding from the stator yoke, and the surfaces of the stator teeth (102) are provided with insulating layers. The stator winding comprises a plurality of preset winding coils (11) formed by machine, and each stator tooth is inserted into x winding coils, wherein x is greater than or equal to 1.

A sealed actuator including stacked motor modules. Each motor module has a motor module housing, a motor stator attached to a respective motor module housing, a motor rotor in communication with a respective motor stator, and a stator seal disposed between the motor stator and motor rotor, surrounding the motor rotor and having a sealing surface interface, that interfaces with a respective sealing housing surface of the motor module housing, facing the motor rotor to seal the motor stator from the motor rotor. The motor module housings are stacked against each other and the sealing housing surface interfaced, at the sealing surface interface facing the rotors, to the respective stacked stator seals of the motor module housings forms a substantially continuous seal interface of the stacked motor modules sealed by the stacked stator seals to form a continuous barrier seal between the motor rotors and the motor stators.

A servo and a robot are provided. The servo comprises an upper cover, a middle cover, a lower cover, a direct-current motor, and a set of gears meshing with each other. The servo comprises a body, and a cylindrical structure having a cylindrical cavity. The servo is in the shape of a hinge as a whole. The direct-current motor is flat, and a side surface of a body of the direct-current motor is exposed outside the middle cover.

A roll joint is provided. The roll joint may comprise: a first body; a second body disposed opposite to and spaced apart from the first body; a connection body which is disposed between the first body and the second body and is not in contact with the first body and the second body; and a connection wire member which connects the first body, the second body, and the connection body to one another so as to make a tensegrity structure.

A vibration generating device includes: a trough where a workpiece is placed; a first vibration motor and a second vibration motor whose rotary shafts are laid along a horizontal direction and parallel to each other; a transmission unit where the first vibration motor and the second vibration motor are arranged and that transmits a vibration of the first vibration motor and the second vibration motor to the trough; a first sensor detecting a rotating position of the rotary shaft of the first vibration motor; and a second sensor detecting a rotating position of the rotary shaft of the second vibration motor.

A cleaner includes a body, a left spin-mop module and a right spin-mop module configured to perform mopping, and a water supply module configured to supply water to the left spin-mop module and the right spin-mop module. The water supply module includes a water tank to store water therein, a pump to pressurize the water in the water tank to move the water to the left spin-mop module and the right spin-mop module, a first supply pipe connecting the water tank and the pump, a common pipe connected to the pump, the common pump configured to guide movement of the pressurized water from the pump, a first branch pipe configured to guide a first portion of the water in the common pipe to the left spin-mop module, and a second branch pipe configured to guide a second portion of the water in the common pipe to the right spin-mop module.

A manipulator arm for a robot, including a printed circuit board motor and a transmission, the printed circuit board motor including a multi-layer board having at least one first solenoid coil with flat coils lying vertically on top of each other, the flat coils being connected electrically in series or in parallel, two vertically adjacent coils being orthogonally offset to each other in each case such that, in a cross-section perpendicular to the surface of the multi-layer board, conducting track portions of the one flat coil are arranged in partial overlap vertically with two conducting track portions of the other flat coil. A robot having at least one manipulator arm of this type and the use of a printed circuit board motor in a manipulator arm of a robot are also provided.

A driven linear axis includes a housing which has a linear rail guide on which a carriage is arranged such that it can be moved back and forth linearly with the aid of a transport device. The transport device comprises a belt which circulates in the housing and is guided over two gears, at least one gear being configured as a drive gear. Furthermore, a drive device is arranged within the drive gear and is in a torque-locking rotary connection with the drive gear.