摘要:
An apparatus for controlling an electric motor provided to drive a movable object such that a detected actual amount of motion of a movable portion of the electric motor or the movable object coincides with a target amount, comprising: a control-condition changing device operable to change at least one of (a) a resolution of detection of the actual amount of motion and (b) a voltage to be applied to the electric motor, depending upon the target amount; and a feedback motor controller operable to control the electric motor by application of the voltage, on the basis of the actual amount of motion detected with the resolution of detection and the target amount, such that the detected actual amount of motion coincides with the target amount. Also disclosed is a motor control method wherein the resolution of detection of the actual amount of motion and/or the voltage of the motor is/are changed depending upon the target amount of motion.
摘要:
An image processing device includes a supply unit, a sheet tray, a conveying unit, an image processing unit, an access unit, and a control unit. A sheet having a storage unit is set in the supply unit. The image processing unit performs an image processing operation for reading an image from the sheet or for printing an image on the sheet. The access unit performs an access operation including at least one of a process for reading data from the storage unit and a process for writing data to the storage unit. The control unit determines whether the access operation for the sheet is successfully performed. The control unit further controls the access unit, based on the determination, to perform re-access operation to the sheet for which the access operation results in failure upon resetting the sheet discharged to the discharge tray onto the supply unit.
摘要:
An image forming apparatus including: (a) a feed mechanism including a motor and a feeder moved by the motor for feeding a medium; (b) a recording head for ejecting an ink toward the medium to form an image; (c) a feed controller for controlling the motor so as to move the feeder to a target operating position that causes the medium to be positioned in a desired position; and (d) an ink ejection controller for causing ink ejection portions of the recording head to eject the ink toward the medium. The feed controller includes: a target-operating-position changer for changing the target operating position as an original target operating position to a modified target operating position in which influence of a cyclic variation of an operation velocity of the feeder is smaller than in the original target operating position. The ink ejection controller includes: an ink-ejection portion shifter for shifting the ink ejection portions in upstream or downstream direction in which the desired position is shifted as a result of change of the target operating position.
摘要:
A speed direction corrector determines whether a speed Vp corresponding to a manipulated variable Up generated by a position controller is larger than a target speed Vt set in a target speed setting register (Vp>Vt). If Vp≦Vt, the manipulated variable corresponding to the target speed Vt is corrected to the manipulated variable Up to produce a new manipulated variable Uf. If Vp>Vt, a manipulated variable corresponding to the target speed Vt is set to the new manipulated variable Uf as is. As above, in a deceleration section where Vp≦Vt, the manipulated variable of a position control is reflected in the manipulated variable of a speed control. Combined use of the speed control and the position control becomes possible without a need to execute a complicated process in which the manipulated variable is regulated at the time of switching from the speed control to the position control.
摘要:
When a first period in which communication is performed by a first interactive communication unit and a second period in which utilization data is utilized have a period overlapping with each other, the utilization data are correlated with interactive communication content data, which are contents interactively delivered in the first period, by a correlation giving unit. When interactive communication is performed by the first interactive communication unit, the previous interactive communication content data are searched out using information on an interactive communication partner of the interactive communication as a search condition, thereby outputting the interactive communication content data and the utilization data correlated with the interactive communication content data by the correlation giving unit.
摘要:
An information management system comprises: an external device a comprising interactive communication unit that interactively communicates with an interactive communication device through a public telephone line; an information processing device connected to the external device in a communication-practicable manner; and a third storage unit that stores utilization data, which is accessed by the external device and the information processing device. When a period specified by a start and end of a communication performed by the interactive communication unit of the external device and a period specified by the start and end of utilization of the utilization data overlap with each other, the utilization data are correlated with the communication of the interactive communication unit.
摘要:
A speed direction corrector determines whether a speed Vp corresponding to a manipulated variable Up generated by a position controller is larger than a target speed Vt set in a target speed setting register (Vp>Vt). If Vp≦Vt, the manipulated variable corresponding to the target speed Vt is corrected to the manipulated variable Up to produce a new manipulated variable Uf. If Vp>Vt, a manipulated variable corresponding to the target speed Vt is set to the new manipulated variable Uf as is. As above, in a deceleration section where Vp≦Vt, the manipulated variable of a position control is reflected in the manipulated variable of a speed control. Combined use of the speed control and the position control becomes possible without a need to execute a complicated process in which the manipulated variable is regulated at the time of switching from the speed control to the position control.
摘要:
A motor control method/device is provided in which a speed change during a deceleration period is stabilized in performing a speed feedback control of a motor. In the motor control method/device, the speed feedback control is performed such that a speed of a body driven by the motor is consistent with a predetermined target speed. A deceleration directive corresponding to time elapsed since a predetermined deceleration control start timing is generated as the target speed using a deceleration function of the elapsed time, to perform the speed feedback control based on the deceleration directive, during a deceleration control period. The deceleration control period starts from the deceleration control start timing and ends when the driven body is stopped. The deceleration function monotonically decreases from the deceleration control start timing until the deceleration directive becomes zero (0) and its derivative is a monotonically decreasing or increasing function or a constant.
摘要:
The same utilization data specifying information as utilization data specifying information for specifying one utilization data is extracted from a first storage unit (first extraction). Process specifying information correlated with the extracted utilization data specifying information is selectively extracted every type of a processing operation (second extraction). The same process specifying information as the process specifying information extracted in the second extraction is extracted from the first storage unit in the unit of type of a processing operation (third extraction). When a utilization time correlated with the process specifying information extracted in the third extraction is included in a predetermined time before and after a utilization time correlated with the process specifying information extracted in the second extraction, the utilization data specified by the utilization specifying information correlated with the process specifying information extracted in the third extraction is correlated with the one utilization data.
摘要:
An information management system is provided, which includes: an external device having an output unit that performs a predetermined process; an information processing device connected to the external device; and a second storage unit that stores utilization data, which is accessed by the external device and the information processing device. When a first period in which the utilization data is utilized by the utilization unit and a second period in which target data of the output unit is previously utilized overlap with each other, the utilization data correlated with the first period is correlated with the target data output in the second period.