Systems and methods for controlling load motion actuators

• US 20070288122A1
• Filed: 08/16/2007
• Published: 12/13/2007
• Est. Priority Date: 11/14/2003
• Status: Abandoned Application

• Current Assignee: Siemens AG
• Original Assignee: Siemens Technology-To-Business Center LLC (Siemens AG)
• Inventors: Wynblatt, Michael, Ludwig, Harmut, WANG, LINGYUN
• Application Number:
  US11/894,018
• Publication Number:
  US 20070288122A1
• Time in Patent Office: Days
• US Class Current: 700/213
• CPC Class Codes: B65G 1/0478 for matrix-arrangements
• CPC Class Codes: B65G 43/10 Sequence control of conveyors operating in combination
• CPC Class Codes: B65G 47/244 by turning them about an axis substantially perpendicular to the conveying plane
• CPC Class Codes: G05B 15/02 electric

Abstract

Systems, methods and computer program code for the control of load motion actuators in load transportation systems are provided which may include selecting actuator control strategies to move loads in accordance with desired load behaviors.

Claims

1. A method, comprising:

determining a desired behavior for one or more loads, the one or more loads being moveable by a plurality of load actuators.

2. The method of claim 1, wherein the plurality of load actuators are arranged in a substantially planar matrix.

3. The method of claim 1, further comprising:

selecting a strategy for controlling the plurality of load actuators based at least in part on a score associated with the strategy

4. The method of claim 1, further comprising:

applying the selected strategy to control the plurality of load actuators.

5. The method of claim 1, further comprising:

determining the strategy for controlling the plurality of load actuators.

6. The method of claim 1, further comprising:

scoring a plurality of strategies for controlling the plurality of load actuators.

7. The method of claim 6, wherein the strategy is selected from the plurality of scored strategies.

8. The method of claim 1, wherein the strategy is operable to control the plurality of load actuators such that the one or more loads are moved in a manner at least similar to the desired behavior.

9. The method of claim 1, wherein the one or more loads includes a plurality of loads.

10. The method of claim 9, wherein the strategy is selected from a plurality of strategies, each of the plurality of strategies having an associated score.

11. The method of claim 10, further comprising:

determining, for each load in the plurality of loads, an expected deviation from the desired behavior that the load would experience under each of the plurality of strategies.

12. The method of claim 11, wherein the expected deviation includes an expected deviation in translational motion and an expected deviation in rotational motion.

13. The method of claim 12, wherein the expected translational and rotational deviations are weighted by multiplying the deviations by a translational and a rotational weighting factor, respectively.

14. The method of claim 11, further comprising:

determining a priority for each of the plurality of loads.

15. The method of claim 14, wherein the priority for each load in the plurality of loads is the product of (i) a priority assigned by a user, (ii) a proximity of the load to a critical zone, and (iii) a factor associated with the isolation of the load from other loads.

16. The method of claim 14, further comprising:

scoring each of the plurality of strategies by multiplying the expected deviation and the priority of each load in the plurality of loads, and summing the products.

17. The method of claim 16, wherein the scoring further includes squaring each of the expected deviations prior to multiplying.

18. The method of claim 16, wherein the scoring further comprises weighting each of the expected deviations prior to multiplying.

19. The method of claim 1, wherein the plurality of load actuators comprises a matrix of load actuators.

20-32. -32. (canceled)