Integrated testing system and method for validation of a manufacturing automation system

• US 7,974,725 B2
• Filed: 01/06/2009
• Issued: 07/05/2011
• Est. Priority Date: 01/06/2009
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Gu, Fangming, Yuan, Chengyin, Biller, Stephan R.
• Primary Examiner(s): Decady; Albert
• Assistant Examiner(s): Sivanesan; Sivalingam
• Application Number:
  US12/349,217
• Publication Number:
  US 20100174395A1
• Time in Patent Office: 910 Days
• Field of Search: 700/110, 714/25, 714/28, 703/4, 703/13, 703/22, 702/84
• US Class Current: 700/110
• CPC Class Codes: G05B 17/02 electric

Abstract

A method of testing a physical manufacturing automation system for manufactured work pieces is provided via a testing system and includes connecting a computer-simulated manufacturing automation system to a controller of the physical manufacturing automation system, wherein the computer-simulated manufacturing automation system is configured to represent a portion of the physical manufacturing automation system, including a simulated work piece. The method then includes concurrently running the physical manufacturing automation system and the computer-simulated manufacturing automation system via the controller, with the physical automation system running in the absence of the physical work pieces.

Claims

1. A method of for validation of a physical manufacturing automation system for manufactured work pieces, comprising:

connecting a computer-simulated manufacturing automation system configured to represent a portion of the physical manufacturing automation system, and including simulated work pieces, to a controller of the physical manufacturing automation system;

concurrently running the physical manufacturing automation system and the computer-simulated manufacturing automation system via the controller, the physical automation system running in the absence of any work pieces; and

providing sensor signals from the computer-simulated manufacturing automation system to the controller, the controller generating automation signals to actuate both the physical manufacturing automation system and the computer-simulated manufacturing automation system based at least in part on the sensor signals.

2. The method of claim 1, wherein the sensor signals provided by the computer-simulated manufacturing automation system are only from simulated sensors whose signaling function is dependent on either the presence or absence of the simulated work pieces.

3. The method of claim 1, wherein the sensor signals provided by the computer-simulated manufacturing automation system are both from simulated sensors whose function is not dependent on either the presence or absence of the simulated work pieces and from other simulated sensors whose signaling function is affected by the presence or absence of the simulated work pieces.

4. The method of claim 1, further comprising:

diagnosing a deficiency of the physical manufacturing automation system if said concurrently running fails to proceed according to a predetermined manner.

5. The method of claim 4, further comprising:

modifying the physical manufacturing automation system and the simulated manufacturing automation system or a control code stored in the controller based on the diagnosing.

6. A method for validation of a physical manufacturing automation system, comprising:

connecting a computer-simulated manufacturing automation system to a controller of the physical manufacturing automation system having a control code;

wherein the computer-simulated manufacturing automation system is configured to simulate a portion of the physical manufacturing automation system and a work piece processed thereon, and includes simulated actuators and simulated sensors configured to simulate physical actuators and physical sensors, respectively, of the physical manufacturing automation system;

wherein at least some of the physical actuators are configured to actuate in response to an actuation signal from the controller to act on the work piece and at least some of the simulated actuators simulate actuation to act on the simulated work piece in response to a substantially identical electronic actuation signal provided by the controller;

wherein at least some of the physical sensors are configured to provide electronic sensor signals to the controller in response to sensing the presence or absence of the work piece; and

wherein at least some of the simulated sensors provide equivalent electronic sensor signals to the controller in response to simulated sensing of the simulated work piece;

wherein the electronic sensor signals are used by the control code to generate the electronic actuation signals; and

concurrently running actuators of the physical manufacturing automation system and the computer-simulated manufacturing automation system via the control code;

wherein the physical manufacturing automation system is run in the absence of the work piece, the control code thereby responding to the electronic sensor signals provided by the simulated sensors and actuating both the physical manufacturing automation system and the computer-simulated manufacturing automation system based at least partly on the electronic sensor signals of the simulated sensors.

7. The method of claim 6, wherein at least some of the electronic sensor signals provided by the simulated sensors are related to the presence or absence of the simulated work piece;

and wherein other electronic sensor signals provided by the sensors in the physical manufacturing automation system are not related to the presence or absence of the work piece.

8. The method of claim 6, further comprising:

diagnosing a deficiency of the physical manufacturing automation system if said running fails to proceed according to a predetermined manner.

9. The method of claim 8, further comprising:

modifying the physical manufacturing automation system and the simulated manufacturing automation system or the control code based on the diagnosing.

10. A testing system comprising:

a physical manufacturing automation system having at least some actuators configured to cause action on a work piece and at least some sensors configured to sense the presence or absence of the work piece;

a computer-simulated manufacturing automation system configured to simulate a portion of the physical manufacturing automation system and having simulated actuators and simulated sensors operable to simulate the action on and sensing of the physical actuators and physical sensors with respect to a simulated work piece; and

wherein the physical manufacturing automation system includes a programmable logic controller operatively connected to both the actuators and the sensors of the physical manufacturing automation system and the computer-simulated manufacturing automation system and configured to run the actuators of the physical manufacturing automation system and the computer-simulated manufacturing automation system simultaneously by providing actuator signals to actuate both the actuators of the physical manufacturing automation system and the simulated actuators and by responding to sensor signals from the simulated sensors, with the physical manufacturing automation system running in the absence of the work piece.

11. The testing system of claim 10, wherein the physical manufacturing automation system includes a field bus operatively connecting the programmable logic controller both to the actuators and the sensors of the physical manufacturing automation system physical and to the computer-simulated manufacturing automation system.

12. The testing system of claim 10, wherein the physical manufacturing automation system includes an input/output module operatively connecting the actuators and the sensors of the physical manufacturing automation system with the programmable logic controller.

13. The testing system of claim 10, wherein the physical manufacturing automation system includes a robot configured to act on the work piece;

and wherein the computer-simulated manufacturing automation system includes a computer-simulated robot configured to simulate equivalent action on the simulated work piece.