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US 2010/0245409 A1Published application
Motor control device, image forming apparatus, and motor control method
AssigneeBrother Kogyo Kabushiki Kaisha
InventorKenichi Iesaki
Life of this patent
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Abstract
A motor control device includes a measurement unit, a speed control unit, a correction unit, a drive unit, and a disturbance suppressing unit. During a time period before a measurement value of speed of one of a motor and a driven object which is driven by the motor measured by the measurement unit becomes greater than zero the correction unit corrects a manipulated variable such that a reduced correction amount which is from zero percent to less than 100 percent of a correction amount determined by the disturbance suppressing unit, is added to the manipulated variable determined by the speed control unit corresponding to a target speed of the one of the motor and the driven object.
Claims15
A motor control device comprising:
- a measurement unit that measures speed of one of a motor and a driven object which is driven by the motor;
- a speed control unit that determines a manipulated variable for the motor, the manipulated variable corresponding to a target speed of the one of the motor and the driven object;
- a correction unit that corrects the manipulated variable determined by the speed control unit;
- a drive unit that drives the motor based on a corrected manipulated variable corrected by the correction unit;
- and
- a disturbance suppressing unit that determines, by estimating disturbance based on the corrected manipulated variable corrected by the correction unit and a measurement value of the speed measured by the measurement unit, a correction amount to correct the manipulated variable obtained by the speed control unit so as to suppress the disturbance;
- wherein the correction unit, during a time period before the measurement value of the speed becomes greater than zero, corrects the manipulated variable in such a manner that a reduced correction amount which is from zero percent to less than 100 percent of the correction amount determined by the disturbance suppressing unit, is added to the manipulated variable determined by the speed control unit.
4 more elements
An image forming apparatus comprising:
- an image forming unit that forms an image onto a sheet;
- a motor that conveys the image forming unit;
- a measurement unit that measures speed of one of the motor and the image forming unit;
- a speed control unit that determines a manipulated variable for the motor, the manipulated variable corresponding to a target speed of the one of the motor and the image forming unit;
- a correction unit that corrects the manipulated variable determined by the speed control unit;
- a drive unit that drives the motor based on a corrected manipulated variable corrected by the correction unit;
- and
- a disturbance suppressing unit that determines, by estimating disturbance based on the corrected manipulated variable corrected by the correction unit and a measurement value of the speed measured by the measurement unit, a correction amount to correct the manipulated variable obtained by the speed control unit so as to suppress the disturbance;
- wherein the correction unit, during a time period before the measurement value of the speed becomes greater than zero, corrects the manipulated variable in such a manner that a reduced correction amount which is from zero percent to less than 100 percent of the correction amount determined by the disturbance suppressing unit, is added to the manipulated variable determined by the speed control unit.
6 more elements
A motor control method comprising:
- a measurement step of measuring speed of one of a motor and a driven object which is driven by the motor;
- a speed control step of determining a manipulated variable for the motor, the manipulated variable corresponding to a target speed of the one of the motor and the driven object;
- a correction step of correcting the manipulated variable determined in the speed control step;
- a drive step of driving the motor based on a corrected manipulated variable corrected in the correction step;
- and
- a disturbance suppressing step of determining, by estimating disturbance based on the corrected manipulated variable corrected in the correction step and a measurement value of the speed measured in the measurement step, a correction amount to correct the manipulated variable obtained in the speed control step so as to suppress the disturbance;
- wherein the correction step includes adding a reduced correction amount which is from zero percent to less than 100 percent of the correction amount determined in the disturbance suppressing step, to the manipulated variable determined in the speed control step, during a time period before the measurement value of the speed becomes greater than zero.
4 more elements
Dependencies are inferred from the claim text.