Control device and motor control system

Patent metadata

Field	Value
Publication number	US-10599104-B2
Application number	US-201716463853-A
Country	US
Kind code	B2
Filing date	Mar 31, 2017
Priority date	Mar 31, 2017
Publication date	Mar 24, 2020
Grant date	Mar 24, 2020

Abstract

An adaptive control device according to the present invention includes: a processor that generates a second command value for a motor on the basis of at least one of a first command value received from a numerical control device, feedback data received from a motor control device that controls the motor on the basis of the first command value, and sensor data received from a sensor; and a communication circuit that transmits the second command value to the numerical control device.

First claim

The invention claimed is:

1. A control device comprising:
circuitry configured to generate a second command value for a motor on a basis of at least one of:
a first command value received from a numerical controller;
feedback data received from a motor controller that controls the motor on the basis of the first command value; and
sensor data received from a sensor;

a communication circuit to transmit the second command value to the numerical controller; and
a signal relay circuit to allow the first command value transmitted from the numerical controller to pass therethrough to the motor controller without change to the first command value, and allow the feedback data transmitted from the motor controller to pass therethrough to the numerical controller without change to the feedback data, the signal relay circuit being connected to a communication line between the numerical controller and the motor controller.

2. The control device according to claim 1 , wherein the communication circuit further transmits the second command value to the motor controller.

3. The control device according to claim 1 , further comprising
a memory to store at least one of the first command value, the feedback data, and the sensor data.

4. The control device according to claim 1 , wherein at least one of the first command value, the feedback data, and the sensor data is stored in an external memory provided outside.

5. The control device according to claim 1 , wherein,
when detecting an abnormality in the first command value, the processor generates a third command value for the motor controller to decelerate the motor, and
the communication circuit transmits the third command value to the motor controller.

6. The control device according to claim 2 , further comprising
a memory to store at least one of the first command value, the feedback data, and the sensor data.

7. The control device according to claim 2 , wherein at least one of the first command value, the feedback data, and the sensor data is stored in an external memory provided outside.

8. The control device according to claim 3 , wherein at least one of the first command value, the feedback data, and the sensor data is stored in an external memory provided outside.

9. The control device according to claim 6 , wherein at least one of the first command value, the feedback data, and the sensor data is stored in an external memory provided outside.

10. The control device according to claim 2 , wherein,
when detecting an abnormality in the first command value, the processor generates a third command value for the motor controller to decelerate the motor, and
the communication circuit transmits the third command value to the motor controller.

11. The control device according to claim 3 , wherein,
when detecting an abnormality in the first command value, the processor generates a third command value for the motor controller to decelerate the motor, and
the communication circuit transmits the third command value to the motor controller.

12. The control device according to claim 6 , wherein,
when detecting an abnormality in the first command value, the processor generates a third command value for the motor controller to decelerate the motor, and
the communication circuit transmits the third command value to the motor controller.

13. The control device according to claim 4 , wherein,
when detecting an abnormality in the first command value, the processor generates a third command value for the motor controller to decelerate the motor, and
the communication circuit transmits the third command value to the motor controller.

14. The control device according to claim 7 , wherein,
when detecting an abnormality in the first command value, the processor generates a third command value for the motor controller to decelerate the motor, and
the communication circuit transmits the third command value to the motor controller.

15. The control device according to claim 8 , wherein,
when detecting an abnormality in the first command value, the processor generates a third command value for the motor controller to decelerate the motor, and
the communication circuit transmits the third command value to the motor controller.

16. The control device according to claim 9 , wherein,
when detecting an abnormality in the first command value, the processor generates a third command value for the motor controller to decelerate the motor, and
the communication circuit transmits the third command value to the motor controller.

17. A control device comprising:
a command value generation circuitry configured to generate a second command value for a motor on a basis of at least one of:
a first command value received from a numerical controller;
feedback data received from a motor controller that controls the motor on the basis of the first command value; and
sensor data received from a sensor;

a transmission circuitry configured to transmit the second command value to the numerical controller; and
a relay to allow the first command value transmitted from the numerical controller to pass therethrough to the motor controller without change to the first command value, and allow the feedback data transmitted from the motor controller to pass therethrough to the numerical controller without change to the feedback data, the relay being connected to a communication line between the numerical controller and the motor controller.

18. A motor control system comprising:
a numerical controller;
a motor controller to control a motor on a basis of a first command value received from the numerical controller, and transmit feedback data to the numerical controller; and
a controller connectable between the numerical controller and the motor controller;
wherein
the controller includes:
a processor to generate a second command value for the motor on the basis of at least one of:
the first command value received from the numerical controller;
the feedback data received from the motor controller; and
sensor data received from a sensor;

a transmitter to transmit the second command value to the numerical controller; and,
a signal relay circuit to allow the first command value transmitted from the numerical controller to pass therethrough to the motor controller without change to the first command value, and allow the feedback data transmitted from the motor controller to pass therethrough to the numerical controller without change to the feedback data, the signal relay circuit being connected to a communication line between the numerical controller and the motor controller, and
wherein when receiving the second command value, the numerical control device controller corrects the first command value on the basis of the second command value.

Assignees

• Mitsubishi Electric Corp

Inventors

• Ito Tatsuya
• Otsuka Toru
• Makino Yukihiro
• Nagaoka Kotaro
• Nakajima Susumu
• Nishino Shinya

Classifications

• G05B13/02 Primary

  electric · CPC title

• G05B2219/34013

  Servocontroller · CPC title

• G05B19/231

  the positional error is used to control continuously the servomotor according to its magnitude · CPC title

• G05B19/18 Primary

  Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form (G05B19/418 takes precedence) · CPC title

• G05B2219/33155

  Communication between motor current controller and position controller · CPC title