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KR-20260064558-A - SYSTEM AND METHOD FOR BLADE PITCH CONTROL OF CYCLOIDAL MARINE PROPULSION SYSTEM

KR20260064558AKR 20260064558 AKR20260064558 AKR 20260064558AKR-20260064558-A

Abstract

A blade pitch control system for a cycloid marine propulsion system is provided. The cycloid marine propulsion system comprises a rotating wheel and a plurality of rotating blades attached to the rotating wheel and individually rotatable with respect to the rotating wheel. The blade pitch control system comprises at least one rotating wheel position sensor configured to provide a sensor signal indicating a measured position of the rotating wheel; a wheel position estimation unit configured to determine an estimated position of the rotating wheel based on the sensor signal of the at least one rotating wheel position sensor; and a blade pitch determination unit configured to determine a blade pitch setpoint for at least one of the plurality of rotating blades based on the estimated position of the rotating wheel. Determining the estimated position of the rotating wheel includes data processing of the sensor signal.

Inventors

  • 류 빈
  • 프란손 페테르
  • 펠리오 벨리-페카

Assignees

  • 에이비비 슈바이쯔 아게

Dates

Publication Date
20260507
Application Date
20251024
Priority Date
20241030

Claims (15)

  1. A blade pitch control system (100) for a cycloid marine propulsion system (1000), wherein the cycloid marine propulsion system (1000) comprises a rotating wheel (20) and a plurality of rotating blades (30a to 30d) attached to the rotating wheel (20) and individually rotatable with respect to the rotating wheel (20), and the blade pitch control system (100) comprises: At least one rotary wheel position sensor (110, 211) configured to provide a sensor signal indicating the measured position of the rotary wheel (20), A wheel position estimation unit (120) configured to determine the estimated position of a rotating wheel based on the sensor signal of at least one rotating wheel position sensor (110, 211); and It includes a blade pitch determination unit (130) configured to determine a blade pitch setting point for at least one of a plurality of rotating blades (30a to 30d) based on the estimated position of a rotating wheel; A blade pitch control system (100) that determines the estimated position of a rotating wheel, including data processing of sensor signals.
  2. In claim 1, the measured position represents the polar angle of the rotating wheel (20), a blade pitch control system (100).
  3. In paragraph 1, the blade pitch control system (100), wherein data processing includes the storage of sensor signals.
  4. In claim 1, the blade pitch control system (100), wherein data processing includes smoothing of the sensor signal.
  5. In paragraph 1, the blade pitch control system (100) includes data processing, which includes filtering of sensor signals.
  6. In claim 1, the blade pitch control system (100), wherein data processing includes extrapolation of sensor signals.
  7. A blade pitch control system (100) according to any one of claims 1 to 6, comprising a plurality of rotary wheel position sensors (110, 211); and data processing comprising sensor fusion of the plurality of rotary wheel position sensors (110, 211).
  8. A blade pitch control system (100), wherein in any one of claims 1 to 6, data processing includes analyzing the sensor signal to identify the type of noise overlaying the sensor signal of the rotating wheel (20).
  9. In any one of claims 1 to 6, the blade pitch control system (100) further includes a noise sensor (220) configured to detect a background noise signal present in a rotary wheel position sensor (110); A blade pitch control system (100) in which data processing includes deconvolution of sensor signals.
  10. A cycloid marine propulsion system (1000) comprising a rotating wheel (20), a plurality of rotating blades (30a to 30d) attached to the rotating wheel (20) and individually rotatable with respect to the rotating wheel (20), and a blade pitch control system (100) according to any one of claims 1 to 6.
  11. A marine vessel including a cycloid marine propulsion system (1000) according to paragraph 10.
  12. A method (400) for determining a blade pitch setting point of a rotating blade of a cycloidal marine propulsion system (1000), wherein the cycloidal marine propulsion system (1000) comprises a rotating wheel (20) and a plurality of rotating blades (30a to 30d) attached to the rotating wheel (20) and individually rotatable with respect to the rotating wheel (20), and the method (300) is: A step (410) of receiving a sensor signal indicating the measured position of a rotating wheel from at least one rotating wheel position sensor (110, 211); Step (420) of determining the estimated position of a rotating wheel based on the sensor signal of at least one rotating wheel position sensor (110, 211); and The method includes the step (430) of determining a blade pitch setting point for at least one of a plurality of rotating blades based on the estimated position of the rotating wheel (20); Determining the estimated position of the rotating wheel involves data processing of the sensor signal, method (400).
  13. In paragraph 12, the method (400) comprises data processing including at least one of storing, smoothing, filtering, or extrapolating the sensor signal.
  14. In claim 12 or 13, the method (400) comprises data processing including analyzing the sensor signal to identify the type of noise overlaying the sensor signal of the rotating wheel.
  15. A method for controlling a cycloid marine propulsion system (1000) according to claim 10 using blade pitch information obtained from a blade pitch control system (100) according to claim 1.

Description

System and Method for Blade Pitch Control of Cycloidal Marine Propulsion System An embodiment of the present disclosure relates to a system for controlling the blade pitch of a cycloidal marine propulsion system. Another embodiment relates to a method for controlling the blade pitch of a cycloidal marine propulsion system. A cycloidal marine propulsion system provides an efficient method for propelling marine vessels. Furthermore, the cycloidal marine propulsion system allows for improved maneuverability of marine vessels. In a cycloidal marine propulsion system, a rotating wheel equipped with rotatable blades attached to it provides thrust. The direction and amount of thrust can be controlled through the rotational speed of the rotating wheel and the pitch of the rotatable blades. In a cycloidal marine propulsion system, the pitch of the rotating blades can be controlled individually. The pitch of the rotating blades is determined based on the position of the rotating wheel. For the efficient operation of the cycloidal marine propulsion system, it is essential to ensure the precise pitch of each rotating blade at every position of the rotating wheel. In particular, the pitch of the rotating blades is controlled based on the position of the rotating wheel. The position of the rotating wheel is typically determined by at least one position sensor. The sensor signal from at least one position sensor, indicating the measured position of the rotating wheel, is used to set the blade pitch setpoint or blade pitch function. Inaccuracy of the sensor signal, leading to a sensor signal that incorrectly indicates the position of the rotating wheel, may result in the blade pitch not being set accurately and thus may be associated with reduced efficiency, disturbance, and higher wear and tear of the cycloidal marine propulsion system. The attached drawings relate to embodiments of the disclosed content and are described below. FIG. 1 schematically illustrates a cycloid marine propulsion system in which a blade pitch control system according to an embodiment described in this specification is embedded within the hull of a ship. FIG. 2 schematically illustrates a cycloidal marine propulsion system having the blade pitch control system of FIG. 2, along with additional optional features. FIG. 3 schematically illustrates a blade pitch control system according to an embodiment described in the present specification. FIG. 4 schematically illustrates a method for determining the blade pitch set point of a rotating blade of a cycloid marine propulsion system according to an embodiment described in this specification. Reference to various embodiments of the present disclosure will now be made in detail, and one or more examples thereof are illustrated in the drawings. Generally, only differences between individual embodiments are described. Each example is provided for the purpose of illustrating the present disclosure and is not intended to limit the present disclosure. Furthermore, features illustrated or described as part of one embodiment may be used for or in conjunction with other embodiments to yield additional embodiments. The description is intended to include such modifications and variations. In the drawings, elements may be depicted with exaggerated dimensions to improve the understanding of the detailed description of the embodiments. In particular, the relationship between the length and width of the depicted components may be distorted. Additionally, some elements may be depicted with enlarged dimensions, while other elements of the same drawings are depicted with relatively reduced dimensions. FIG. 1 schematically illustrates a cycloidal marine propulsion system (1000) in which a blade pitch control system (100) according to an embodiment described herein is embedded within the hull (40) of a marine vessel. The cycloidal marine propulsion system (1000) includes a rotating wheel (20) having four rotating blades (30a to 30d). The blade pitch control system (100) includes a rotating wheel position sensor (110). The rotating wheel position sensor (110) is configured to provide a sensor signal indicating the measured position of the rotating wheel. The rotating wheel position sensor (110) is positioned substantially on the axis of rotation of the rotating wheel (20), typically at the center of the rotating wheel (20). The sensor signal of the rotating wheel position sensor (110) is transmitted to a wheel position estimation unit (120). The wheel position estimation unit (120) is configured to determine the estimated position of the rotating wheel. The estimated position of the rotating wheel is transmitted to the blade pitch determination unit (130). The blade pitch determination unit (130) determines a blade pitch setpoint for at least one of a plurality of rotating blades (30a to 30d). The blade pitch determination unit (130) transmits the blade pitch setpoint for each rotating blade (30a to 30d) to the motor control