Steering for marine propulsion unit
AssigneesYamaha Hatsudoki Kabushiki Kaisha, Marine Canada Acquisition Inc.
InventorMakoto MIZUTANI
Life of this patent
Estimating the term…
Abstract
A steering for a marine propulsion unit adjusts at least one of a required steering speed and a required steering torque such that the required steering speed and the required steering torque fall within an output region when the required steering speed and the required steering torque are outside the output region, sets a target steering angle according to the adjusted required steering speed and required steering torque, and sets the target steering angle according to a rotation angle of a steering wheel when the required steering speed and the required steering torque are within the output region.
Claims10
A steering for a marine propulsion unit comprising:
- an electric actuator that changes a direction of a thrust force of the marine propulsion unit;
- a storage that stores an output region that is set based on a steering speed and a steering torque provided by the electric actuator;
- and
- a controller configured or programmed to:
- acquire a required steering speed and a required steering torque based on a rotation angle of a steering wheel;
- adjust at least one of the required steering speed and the required steering torque such that both the required steering speed and the required steering torque fall within the output region when both the required steering speed and the required steering torque are outside the output region;
- set a target steering angle based on at least one of the required steering speed and the required steering torque that has been adjusted;
- and
- set the target steering angle based on the rotation angle of the steering wheel when the required steering speed and the required steering torque are within the output region, and to drive and control the electric actuator according to the set target steering angle.
Dependencies are inferred from the claim text.