Motor control method and motor control apparatus
AssigneeBrother Kogyo Kabushiki Kaisha
InventorsKazushige Muroi, Masatoshi Kokubo
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Abstract
An edge detector 15 of an ASIC 3 detects a pass timing signal indicating a timing in which slits of a slit plate pass light emitting and receiving elements of a photo interrupter, and the rotation direction of a transfer roller based on phase-A and phase-B signals from an encoder 56. A position counter 16 counts the pass timing signal in accordance with the rotation direction of the transfer roller. When a count comparator 17 detects the agreement of the count value of the position counter 16 with the set value of a stop position setting register 12, a stop position processor 22 counts a delay time, and outputs a stop command signal of an LF motor to a PWM generator 8 in the timing of agreement with the set value of a time setting register 11.
Claims12
A motor control method for controlling a motor based on a pass timing signal indicating a timing in which a movable part of a motor or a member to be driven by the motor passes each of a plurality of preset defined positions, the method comprising the steps of:
- detecting the timing corresponding to a target stop position in which said movable part or member to be driven is to be stopped based on said pass timing signal;
- and stopping said motor in a preset stop timing while said movable part or member to be driven reaches the defined position disposed beyond and adjacent to said target stop position.
A motor control apparatus comprising:
- a pass timing generator for generating a pass timing signal indicating a timing in which a movable part of a motor or a member to be driven by the motor passes each of a plurality of preset defined positions;
- and
- a stop instructing portion for instructing the motor to stop in a preset stop timing while said movable part or member to be driven reaches the defined position disposed beyond and adjacent to a target stop position, when detecting the timing corresponding to the target stop position in which said movable part or member to be driven is to be stopped based on said pass timing signal generated by the pass timing generator.
A motor control apparatus comprising:
- pass timing generating means for generating a pass timing signal indicating a timing in which a movable part of a motor or a member to be driven by the motor passes each of a plurality of preset defined positions;
- and
- stop instructing means for instructing the motor to stop in a preset stop timing while said movable part or member to be driven reaches the defined position disposed beyond and adjacent to a target stop position, when detecting the timing corresponding to the target stop position in which said movable part or member to be driven is to be stopped based on said pass timing signal generated by the pass timing generating means.
Dependencies are inferred from the claim text.