Search

CN-122029722-A - Stator structure, stator and releasable connection of cover to stator for displacement system

CN122029722ACN 122029722 ACN122029722 ACN 122029722ACN-122029722-A

Abstract

Aspects of the present disclosure provide a stator structure for a stator of a displacement system. The stator structure may comprise a conductor arranged to generate an external magnetic field operable to move the mover in the working environment of the displacement system. The stator structure may also define a stator environment separate from the operating environment. The stator environment may receive a stator electronics subassembly for driving current in the conductor to cause the conductor to generate an external magnetic field. The stator structure may maintain separation between the stator environment and the operating environment when the stator electronics subassembly is inserted into or removed from the stator environment. Aspects of the present disclosure also provide a method and kit for releasably attaching a cover to a stator of a displacement system, and a stator device resulting from such attachment.

Inventors

  • K .xiao
  • J.LI
  • Z.W.Lu
  • G williamson
  • LU XIAODONG
  • CHEN RUI

Assignees

  • 普兰纳汽车公司

Dates

Publication Date
20260512
Application Date
20240814
Priority Date
20230814

Claims (20)

  1. 1. A stator structure for a displacement system, the stator structure comprising: At least one conductor arranged to generate at least one external magnetic field operable to move at least one mover in an operating environment of the displacement system, and A support structure supporting the at least one conductor and defining a stator environment separate from the working environment, the stator environment for receiving at least one stator electronics subassembly operable to drive at least one current in the at least one conductor to cause the at least one conductor to generate the at least one external magnetic field, the support structure configured to maintain separation between the stator environment and the working environment when one or more of the at least one stator electronics subassembly is inserted into or removed from the stator environment.
  2. 2. The stator structure of claim 1, wherein the support structure seals the stator environment from the working environment.
  3. 3. The stator structure of claim 1 or claim 2, wherein the working environment and the stator environment are at least across the at least one conductor when the at least one mover moves in the working environment in response to the at least one external magnetic field.
  4. 4. A stator structure according to claim 1, claim 2 or claim 3, wherein the support structure comprises: A motor support structure supporting the at least one conductor, and A stator support structure supporting the motor support structure.
  5. 5. The stator structure of claim 4, wherein the motor support structure is attached to the stator support structure.
  6. 6. The stator structure of claim 5, wherein the attachment between the motor support structure and the stator support structure seals the stator environment from the operating environment.
  7. 7. The stator structure of claim 4, claim 5, or claim 6, wherein the stator support structure defines at least one opening between the stator environment and an external environment for receiving the at least one stator electronics subassembly into the stator environment, the support structure configured to maintain separation between the stator environment and the working environment when one or more of the at least one electronics subassembly is inserted into or removed from the stator environment through the at least one opening.
  8. 8. The stator structure of any of claims 4-7, wherein the motor support structure defines motor support structure cooling channels for transferring heat through the motor support structure.
  9. 9. A stator for a displacement system, the stator comprising: the stator structure according to any one of claims 1 to 8, and At least one stator electronics subassembly inserted into the stator environment and operable to drive at least one current in the at least one conductor to cause the at least one conductor to generate the at least one external magnetic field.
  10. 10. The stator of claim 9, wherein the at least one stator electronics subassembly is electrically connected to the at least one conductor.
  11. 11. A stator according to claim 9 or claim 10, wherein the at least one stator electronics subassembly comprises an amplifier operable to drive at least one current in the at least one conductor to cause the at least one conductor to generate the at least one external magnetic field.
  12. 12. The stator of claim 9, claim 10, or claim 11, wherein the at least one stator electronics subassembly defines at least one stator electronics cooling channel for transferring heat through the at least one stator electronics subassembly.
  13. 13. A stator according to claim 12 when dependent directly or indirectly on claim 8, wherein one or more of the at least one stator electronics cooling channels communicates with the motor support structure cooling channel to transfer heat between the at least one stator electronics subassembly and the motor support structure.
  14. 14. The stator of any of claims 9-13, wherein the at least one stator electronics subassembly comprises at least one sensor arranged to measure a position of the at least one mover as the at least one mover moves in the working environment in response to the at least one external magnetic field.
  15. 15. A method of installing a stator electronics subassembly in a stator structure according to any one of claims 1-8, the stator electronics subassembly being operable to drive at least one current in the at least one conductor to cause the at least one conductor to generate at least one external magnetic field, the method comprising: the stator electronics subassembly is inserted into the stator environment.
  16. 16. A method of removing one or more of the at least one stator electronics sub-assemblies from the stator of any of claims 9-14, the method comprising: one or more of the at least one stator electronics subassembly is removed from the stator environment.
  17. 17. A method of releasably attaching a cover to a stator of a displacement system, the stator comprising at least one conductor arranged to generate at least one external magnetic field operable to move at least one mover of the displacement system, the method comprising: adhering an adhesive layer to the stator, and The adhesive layer is adhered to the cover.
  18. 18. A method of separating a cover from a stator of a displacement system, the stator comprising at least one conductor arranged to generate at least one external magnetic field operable to move at least one mover of the displacement system, the cover being attached to the stator by an adhesive layer adhered to the stator and the cover, the method comprising: the release body is pulled through the adhesive layer.
  19. 19. A stator arrangement for a displacement system, the stator arrangement comprising: a stator comprising at least one conductor arranged to generate at least one external magnetic field operable to move at least one mover of the displacement system; Cover, and An adhesive layer between the stator and the cover, the adhesive layer adhering to the stator and the cover.
  20. 20. A kit, comprising: A stator comprising at least one conductor arranged to generate at least one external magnetic field operable to move at least one mover of the displacement system; Cover, and An adhesive layer capable of adhering to the stator and the cover when the adhesive layer is located between the stator and the cover.

Description

Stator structure, stator and releasable connection of cover to stator for displacement system Citation of related applications The present application claims the benefit and priority of U.S. provisional patent application No. 63/532,624 filed 8/14 at 2023, the entire contents of which are incorporated herein by reference. The application also claims the benefit and priority of U.S. provisional patent application No. 63/564,947, filed on 3/13 at 2024, the entire contents of which are also incorporated herein by reference. Technical Field The present disclosure relates generally to a displacement system or conveyor and a stator for such a system. Background Such as XY tables and rotary tables, displacement systems or conveyors may be used in a variety of manufacturing, inspection, and assembly processes. These systems may include a stator and a mover, commonly referred to as a robotic device, a mover device, or a movable platform. The stator drives the mover. XY motion can be achieved by stacking two linear stages (e.g., an X stage and a Y stage) together via connecting bearings. Alternatively, a single motion stage capable of XY motion may be used, eliminating additional bearings. It may also be desirable for such motion stages to be able to provide at least some Z-direction motion. Attempts have been made to design such displacement systems using the interaction between current carrying coils and permanent magnets. Examples include U.S. patent 6,003,230, U.S. patent 6,097,114, U.S. patent 6,208,045, U.S. patent 6,441,514, U.S. patent 6,847,134, U.S. patent 6,987,335, U.S. patent 7,436,135, U.S. patent 7,948,122, U.S. patent publication 2008/0203828, W.J. Kim and D.L. Trumper, "high precision magnetic levitation bench for lithography", precision engineering 22 (1998), pages 66-77, D.L. Trumper et al, "magnet array of synchronous motor", institute of IEEE Industrial applications annual meeting, volume 1, pages 9-18, 1993, and J.W. Jansen, C.M. van Lierop, E.A. Lomonova, A.J.A. Vandenput, "planar actuator with moving magnets", IEEE Industrial applications journal 44, volume 4, 2008. More recent techniques for implementing a displacement system with a mover and a stator are described in PCT/CA2012/050751 PCT application entitled "displacement device and method of making, using and controlling thereof" (publication No. WO/2013/059934), PCT/CA2014/050739 PCT application entitled "displacement device and method and apparatus for detecting and estimating motion associated therewith" (publication No. WO/2015/017933), PCT/CA2015/050549 PCT application entitled "displacement device, movable platform of displacement device and method of making, using and controlling thereof" (publication No. WO/2015/188281), PCT/CA2015/050523 entitled "method and system for controllably moving a plurality of movable platforms in a displacement device" (publication No. WO/2015/18553), and PCT/CA 157/2015 entitled "displacement device and method of making, using and controlling thereof" (publication No. WO/2015/9962). Existing displacement systems may lack certain functionality and capabilities. For example, the stator of existing systems may not be sufficiently protected from adverse environmental conditions. Furthermore, in some displacement systems, it may be desirable to maintain an independent environment for the stator wiring and active mover during operation, but while maintaining such an independent environment, the stator of existing systems may be non-maintainable. Furthermore, existing displacement systems may need to work in conjunction with closely spaced stator modules to produce a uniform sensor and coil pattern, as the forcer of existing systems may not be easy to traverse large gaps between modules. In such systems, access to the stator working surface from below may be limited. Disclosure of Invention Embodiments of the present disclosure may provide a method and kit for releasably attaching a cover to a stator, and a stator device resulting from such attachment. Embodiments of the present disclosure may also provide a stator structure that allows maintainability of a stator while maintaining separation between a mover working environment and a stator wiring environment, and a stator incorporating such a stator structure. In accordance with at least one embodiment, a stator structure for a displacement system is disclosed, the stator structure comprising at least one conductor arranged to generate at least one external magnetic field operable to move at least one mover in an operating environment of the displacement system, and a support structure supporting the at least one conductor and defining a stator environment separate from the operating environment for receiving at least one stator electronics subassembly operable to drive at least one current in the at least one conductor to cause the at least one conductor to generate the at least one external magnetic field, the support structure being configured to maintain