MOTOR CONTROL DEVICE, CONTROL SYSTEM, AND MOTOR CONTROL METHOD
First Claim
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1. A motor control device comprising:
- a command receiving unit adapted to receive a movement command and a first control period of the movement command from a numerical controller;
a command generating unit which, on the basis of the first control period and a second control period which is determined in advance, is adapted to generate a movement command of the second control period from the movement command of the first control period; and
a motor control unit adapted to control a motor, in accordance with the movement command generated by the command generating unit.
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Abstract
A motor control device is equipped with a command receiving unit adapted to receive a movement command and a first control period of the movement command from a numerical controller, a command generating unit which, on the basis of the first control period and a second control period which is determined in advance, is adapted to generate a movement command of the second control period from the movement command of the first control period, and a motor control unit adapted to control a motor, in accordance with the movement command generated by the command generating unit.
2 Citations
12 Claims
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1. A motor control device comprising:
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a command receiving unit adapted to receive a movement command and a first control period of the movement command from a numerical controller; a command generating unit which, on the basis of the first control period and a second control period which is determined in advance, is adapted to generate a movement command of the second control period from the movement command of the first control period; and a motor control unit adapted to control a motor, in accordance with the movement command generated by the command generating unit.
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2. The motor control device according to claim 1, wherein the second control period is a period that is shorter than the first control period.
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3. A control system comprising the motor control device and the numerical controller according to claim 1, wherein the numerical controller includes a period setting unit adapted to set the first control period.
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4. The control system according to claim 3, wherein the period setting unit sets the first control period in accordance with a processing load ratio by the numerical controller.
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5. The control system according to claim 3, wherein:
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the numerical controller includes a period receiving unit adapted to receive the second control period from the motor control device; and the period setting unit sets as the first control period a period that is longer than the second control period.
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6. The control system according to claim 5, comprising:
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a plurality of the motor control devices; wherein the period receiving unit receives the second control period from each of the plurality of motor control devices; and the period setting unit sets as the first control period a period that is longer than the longest of the second control periods from among the second control periods of the plurality of motor control devices.
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7. A motor control method for controlling a motor, comprising:
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a command receiving step of a motor control device receiving a movement command and a first control period of the movement command from a numerical controller; a command generating step of the motor control device generating, on the basis of the first control period and a second control period which is determined in advance, a movement command of the second control period from the movement command of the first control period; and a motor controlling step of the motor control device controlling the motor, in accordance with the movement command generated by the command generating step.
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8. The motor control method according to claim 7, wherein the second control period is a period that is shorter than the first control period.
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9. The motor control method according to claim 7, wherein the numerical controller includes a period setting step of setting the first control period.
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10. The motor control method according to claim 9, wherein, in the period setting step, the first control period is set in accordance with a processing load ratio by the numerical controller.
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11. The motor control method according to claim 9, wherein:
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the numerical controller includes a period receiving step of receiving the second control period from the motor control device; and in the period setting step, there is set as the first control period a period that is longer than the second control period.
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12. The motor control method according to claim 11, wherein:
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in the period receiving step, the second control period is received from each of a plurality of motor control devices; and in the period setting step, there is set as the first control period a period that is longer than the longest of the second control periods from among the second control periods of the plurality of motor control devices.
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Specification