Motor control device and motor control method
AssigneeBrother Kogyo Kabushiki Kaisha
InventorKazushige Muroi
Life of this patent
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Abstract
If a traveling speed of a carriage calculated by a speed converter is larger than an estimated speed in a deceleration section, braking is conducted by a braking method corresponding to a manipulated variable generated by a drive control unit. Owing to this type of braking, the traveling speed is reduced to the estimated speed. At this time, braking is conducted corresponding to an error between a target speed and the traveling speed, or an error between a speed (corresponding to an error between a current position of the carriage and a target stop position) and the traveling speed. Therefore, even if a braking force required for braking differs depending on individual variability of the carriage control device or operative condition of the carriage, braking can be conducted with a suitable braking force.
Claims20
A motor control device comprising:
- a motor that drives a plant;
- a detector that detects at least one operation value indicating an operational state of the plant;
- a controller that determines a manipulated variable corresponding to an error between the operation value detected by the detector and a given direction value;
- and
- a braking device that brakes the plant corresponding to the error between the operation value and the direction value when the operation value detected by the detector is larger than an estimated value estimated as a predetermined operation value in a deceleration section which continues to a target stop position until the plant is stopped.
A motor control method comprising steps of:
- detecting at least one operation value indicating an operational state of a plant driven by a motor;
- determining a manipulated variable based on an error between the operation value and a direction value;
- and
- conducting a braking on the plant according to an error between the operation value and the direction value, if the operation value indicating the operational state of the plant is larger than an estimated value estimated as a predetermined operation value in a deceleration section which continues to a target stop position until the plant is stopped.
Dependencies are inferred from the claim text.