Sejimo
Hitoshi Sejimo, Chikuma JP
Patent application number | Description | Published |
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20150328800 | METHOD OF RESUMING OPERATION OF WIRE SAW - A method of resuming operation of a wire saw in which slicing of a workpiece is suspended due to a wire break, including processes of: imparting axial reciprocating motion to a wire while supplying a new line of the wire; and slicing the workpiece into wafers by moving the workpiece downwardly to press the workpiece against the reciprocating wire while supplying a slicing slurry to the wire, the method includes: repairing the broken wire after suspending the slicing of the workpiece before resuming the slicing of the workpiece; and preparing for the slicing in that a diameter of the repaired wire at a position at which the workpiece is to be sliced is matched to the diameter of the wire just before occurrence of the wire break. The method can inhibit the formation of grooves in wafers sliced after the resumption and reduce low-quality production wafers. | 11-19-2015 |
Isamu Sejimo, Chino JP
Patent application number | Description | Published |
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20120068639 | ELECTRIC MOTOR CONTROL DEVICE - An electric motor control device includes a control section adapted to control supply of a drive current to an electric motor, and a rotational speed detection section adapted to detect a rotational speed of the electric motor, the drive current includes a d-axis current and a q-axis current, and the control section calculates a q-axis current command value based on a torque command value to the electric motor, calculates a d-axis current command value using a difference between the rotational speed of the electric motor and a previously determined base rotational speed of the electric motor, and the q-axis current command value, and performs vector control on the electric motor using the d-axis current command value and the q-axis current command value. | 03-22-2012 |
20130090761 | MOTOR CONTROL DEVICE, ROBOT HAND, ROBOT, AND MOTOR CONTROL METHOD - A motor control device controls a motor using an angle data signal and a rotational speed signal output from a rotation detector detecting a rotation state of a rotating shaft of the motor. The motor control device includes a speed control unit that outputs a torque instruction signal corresponding to a difference between the rotational speed of the rotating shaft and a speed instruction using the speed instruction of the rotating shaft and the rotational speed signal, a limit value setting unit that sets a torque limit value indicating the maximum value of the torque applied to the rotating shaft, and a torque limit control unit that limits the torque of the rotating shaft driven by the torque instruction signal to the torque limit value or less. | 04-11-2013 |
Kazushige Sejimo, Niigata-Ken JP
Patent application number | Description | Published |
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20150192432 | MAGNETIC SENSOR - A magnetic sensor for detecting the position of a magnet in an X direction includes two magnetic sensor elements which are disposed to be spaced apart from each other in a Y direction and are disposed to face the magnet in a Z direction, in which a soft magnetic body is provided to be located between the magnet and the two magnetic sensor elements and to be located between the two magnetic sensor elements, the two magnetic sensor elements are provided in a range in which magnetic flux which is generated from the magnet saturates magnetization of free magnetic layers of the two magnetic sensor elements, magnetization directions of fixed magnetic layers of the two magnetic sensor elements are the same as each other, and a bridge circuit is configured with the two magnetic sensor elements. | 07-09-2015 |
Masaki Sejimo, Tokyo JP
Patent application number | Description | Published |
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20100195500 | LOAD DISTRIBUTION SYSTEM, LOAD DISTRIBUTION METHOD, AND AUTHENTICATION SERVER - The present invention provides a load distribution system and a load distribution method that are capable of selecting an appropriate server in consideration of a load condition of a server and characteristic of a mobile node. Provided is a load distribution system | 08-05-2010 |