Robot control device and robot system

Patent metadata

Field	Value
Publication number	US-11185993-B2
Application number	US-201916278455-A
Country	US
Kind code	B2
Filing date	Feb 18, 2019
Priority date	Feb 19, 2018
Publication date	Nov 30, 2021
Grant date	Nov 30, 2021

Abstract

The control device for controlling a robot having a force detector includes an input device, a display, a memory, and a processor. The processor executes a program to repeat receiving of an input via the input device, selecting of an object of operation objects based on the input, and displaying of the selected object a predetermined number of times to complete an object operation flow. The processor converts the completed object operation flow into a control program for controlling the operations of the robot. The display displays a selection for selecting whether an integrator is applied to a difference between time series target force and time series measuring force for a specific control direction. The processor receives an adjusting input via the input device for adjusting an integral gain of the integrator when a result of the execution of the control program is in a predetermined condition.

First claim

What is claimed is:

1. A robot control device comprising:
an input device through which an instruction is input:
a display having a switchable plurality of screens, the switchable plurality of screens including a first screen and a second screen, the first screen being divided into a first area and a second area, the first area being configured to display a plurality of operation objects corresponding to operations using force control of a robot having a force detector, the second area being configured to display an object operation flow corresponding to a robot operation flow of the robot;
a memory configured to store a program and a time series target force of the force detector corresponding to the robot operation flow of the robot: and a processor configured to execute the program so as to:
cause the first area of the display to display the plurality of operation objects and the conditional operation object;
receive an input as the instruction via the input device; select an object of the plurality of operation objects and the conditional operation object based on the input;
cause the second area of the display to display the selected object as a part of the object operation flow;
repeat the receiving of the input, the selecting of the object, and the causing of the second area to display the selected object a predetermined number of times to complete the object operation flow;
convert the completed object operation flow into a control program, the control program being configured to control the operations of the robot;
execute the control program to control the robot; detect a time series measuring force of the force detector during the execution of the control program;
cause the first area of the display to display the time series measuring force of the force detector and a selection for selecting whether an integrator is applied to a difference between the time series target force and the time series measuring force for a specific control direction among a plurality of control directions, an application of the integrator corresponding to integrating the difference;
receive a selection input as the instruction via the input device with respect to the selection;
cause the display to switch to display the second screen when the selection input corresponding to the application of the integrator; and
receive an adjusting input via the input device for adjusting an integral gain of the integrator when a result of the execution of the control program is in a predetermined condition.

2. The robot control device according to claim 1 ,
wherein the processor is configured to independently select whether or not the integrator is applied to the difference for each of the plurality of control directions.

3. The robot control device according to claim 2 ,
wherein, when the integrator is applied, the processor is configured to obtain the difference by subtracting the time series measuring force from the time series target force,
the processor is configured to input the difference into the integrator,
the processor is configured to add the difference and an output of the integrator to create a force control output, and
the processor is configured to perform the force control with respect to a work based on the force control output by using the force detector.

4. The robot control device according to claim 2 ,
wherein, when the robot is operated by executing the control program created in a state where the integrator is not applied and a steady-state deviation between the time series measuring force and the time series target force is larger than a predetermined threshold value, the processor is configured to display a dialogue box in the second screen for the application of the integrator.

5. The robot control device according to claim 2 ,
wherein the processor is configured to adjust a gain of the detection of the time series measuring force of the force detector so as to reduce overshoot of the time series measuring force for the specific control direction to which the integrator is applied, and
the processor adjusts the gain by adjusting the integral gain of the integrator.

6. The robot control device according to claim 1 ,
wherein, when the integrator is applied, the processor is configured to obtain the difference by subtracting the time series measuring force from the time series target force,
the processor is configured to input the difference into the integrator,
the processor is configured to add the difference and an output of the integrator to create a force control output, and
the processor is configured to perform the force control with respect to a work based on the force control output by using the force detector.

7. The robot control device according to claim 6 ,
wherein, when the robot is operated by executing the control program created in a state where the integrator is not applied and a steady-state deviation between the time series measuring force and the time series target force is larger than a predetermined threshold value, the processor is configured to display a dialogue box in the second screen for the application of the integrator.

8. The robot control device according to claim 6 ,
wherein the processor is configured to adjust a gain of the detection of the time series measuring force of the force detector so as to reduce overshoot of the time series measuring force for the specific control direction to which the integrator is applied, and
the processor adjusts the gain by adjusting the integral gain of the integrator.

9. The robot control device according to claim 1 ,
wherein, when the robot is operated by executing the control program created in a state where the integrator is not applied and a steady-state deviation between the time series measuring force and the time series target force is larger than a predetermined threshold value, the processor is configured to display a dialogue box in the second screen for the application of the integrator.

10. The robot control device according to claim 1 ,
wherein the processor is configured to adjust a gain of the detection of the time series measuring force of the force detector so as to reduce overshoot of the time series measuring force for the specific control direction to which the integrator is applied, and
the processor adjusts the gain by adjusting the integral gain of the integrator.

11. A robot system comprising:
a robot having a force detector;
an input device through which an instruction is input;
a display having a switchable plurality of screens, the switchable plurality of screens including a first screen and a second screen, the first screen being divided into a first area and a second area, the first area being configured to display a plurality of operation objects corresponding to operations using force control of the robot, the second area being configured to display an object operation flow corresponding to a robot operation flow of the robot;
a memory configured to store a program and a time series target force of the force detector corresponding to the robot operation flow of the robot; and
a processor is configured to execute the program so as to:
cause the first area of the display to display the plurality of operation objects and the conditional operation object;
receive an input as the instruction via the input device; select an object of the plurality of operation objects and the conditional operation object based on the input;
cause the second area of the display to display the selected object as a part of the object operation flow;
repeat the receiving of the input, the selecting of the object, and the causing of the second area to display the selecte

Assignees

• Seiko Epson Corp

Inventors

• Takeuchi Kaoru

Classifications

• G05B2219/39001

  Robot, manipulator control · CPC title

• B25J13/06 Primary

  Control stands, e.g. consoles, switchboards · CPC title

• B25J9/1656

  characterised by programming, planning systems for manipulators · CPC title

• B25J9/1694

  characterised by use of sensors other than normal servo-feedback from position, speed or acceleration sensors, perception control, multi-sensor controlled systems, sensor fusion · CPC title

• G05B2219/39319

  Force control, force as reference, active compliance · CPC title