摘要:
In driving method and system for an electrical rotating machine, the electrical rotating machine comprising two rotors, each rotor being independently driven by means of a compound current generated by a multi-phase inverter, and a stator on which a plurality of stator coils are wound, the respective stator coils are divided into a plurality of groups thereof, a total current sum of each group thereof being zeroed and neutral points of the stators belonging to the respective groups being interconnected and drive pulses are supplied to a plurality of inverter arms of the inverter associated with one group of the stator coils independently of those supplied to other inverter arms of the inverter associated with the other group of the stator coils.
摘要:
A current detection device used for a plurality of rotating electric machines is provided. The rotating electric machines are supplied with a composite current containing a plurality of frequency components from an single inverter and the frequency is set in response to the rotational angular velocity of one rotating electric machine. The current detection device is provided with a current sensor which detects only current components at a single frequency in the composite current. The current sensor detects the currents in a set of supply lines, the supply lines of which being collected and passing through the current sensor so that the current components of the frequency different from the single frequency cancel out to zero in the set of supply lines.
摘要:
A motor/generator comprises a stator (2) having plural coils (C1-C14), and plural rotors (3, 4) disposed coaxially with the above-mentioned stator and driven by a compound current. The phase difference between the currents (70, 71) driving the rotors (3, 4) is arranged to be other than 180 degrees. Thereby, the utilization factor of the voltage of the direct current power supply (10) is improved.
摘要:
A recording medium transport apparatus includes: plural storage units each storing a recording medium; a transport unit that transports the recording medium from one of the storage units to a recording position where an image is recorded on the recording medium; a memory that stores a reference position of a recording medium prescribed for each storage unit; a measuring unit that measures a position of the transported recording medium; and a movement unit that reads the reference position corresponding to the storage unit that stored the transported recording medium, from the memory, and moves the recording medium according to the difference between the reference position and the measured position such that the position of the recording medium approaches the reference position when the recording medium is located upstream of the recording position in the transport direction thereof.
摘要:
An image forming apparatus includes an image forming unit that forms an image on a recording medium; a fixing device that fixes the image formed on the recording medium at the image forming unit while nipping and transporting the image formed on the recording medium at the image forming unit; a transporting section provided downstream from the fixing device in a direction of transportation of the recording medium, the transporting section nipping and transporting the recording medium; and a controller that performs control for changing a transporting velocity of the fixing device and a transporting velocity of the transporting section on the basis of information used for triggering a change in the transporting velocity of the fixing device when the recording medium is held by the fixing device and the transporting section.
摘要:
A recording sheet moving device includes: a moving unit that moves a recording sheet; a recording sheet specifying unit that specifies a length in the transport direction and a weight per unit area of the recording sheet; a first memory configured to record, for each of plural recording sheets, a threshold for a length in the transport direction in association with a weight per unit area; and a movement control unit that retrieves a threshold for a length on the basis of the specified weight per unit area from the first memory, and compares the retrieved threshold for a length and the specified length, to determine whether to cause the moving unit to move the recording sheet, and if it is determined that the recording sheet should be moved, causes the moving unit to move the recording sheet.
摘要:
A recording material moving device comprises: a position adjuster that moves a recording material in a direction which is parallel to a recording surface of the recording material and orthogonal to a transporting direction, in an upstream side of a recording position along the transport direction of the recording material; a reference position specifying unit that specifies a reference position; a determination unit that determines whether a range of a predetermined width centered on the reference position exceeds a movable range of the recording material within which the recording material can be moved by the position adjuster; and a controller that causes, if the determination unit determines that the movable range is not exceeded, the position adjuster to sequentially move the recording material within the movable range of the predetermined width centered on the reference position each time a condition for moving the recording material is satisfied.
摘要:
A recording medium transport apparatus includes: plural storage units each storing a recording medium; a transport unit that transports the recording medium from one of the storage units to a recording position where an image is recorded on the recording medium; a memory that stores a reference position of a recording medium prescribed for each storage unit; a measuring unit that measures a position of the transported recording medium; and a movement unit that reads the reference position corresponding to the storage unit that stored the transported recording medium, from the memory, and moves the recording medium according to the difference between the reference position and the measured position such that the position of the recording medium approaches the reference position when the recording medium is located upstream of the recording position in the transport direction thereof.
摘要:
A medium transporting device includes: a transporting path; a contacted member that is provided on the transporting path to be movable in a medium width direction orthogonal to a medium transporting direction; a line-up member on the transporting path that lines up a position of the medium by sending the medium transported on the transporting path to the contacted member to bring the end of the medium in the medium width direction into contact with the contacted member; a displacement amount calculation unit that sets on a downstream side of the line-up member in the medium transporting direction, and calculates a misregistration amount of the medium in the medium width direction; and a contacted position control unit that controls a position of the contacted member by moving the contacted member in a direction of reducing the misregistration amount.
摘要:
An image forming apparatus includes a fixing device including a pair of first rotating members; a first transport path having a curved portion where a recording medium is curved, the first transport path being for transporting the recording medium to which the image is fixed by the pair of first rotating members; a first transporting section including a pair of second rotating members provided downstream from the curved portion of the first transport path; and a controller that controls so that, while the recording medium is interposed between the pair of first rotating members and the pair of second rotating members, a peripheral velocity of the second rotating members and a peripheral velocity of the first rotating members are reduced at the same time, or the peripheral velocity of the second rotating members is reduced before reducing the peripheral velocity of the first rotating members.