US 8,897,939 B2 · Automatic steering device and automatic steering method

Abstract

There is provided an automatic steering device with which an optimal duty ratio for achieving an optimal rudder turning speed at a cruising speed can be found simply and accurately. An automatic steering device 10 includes a correspondence acquisition component 24 and a duty ratio calculator 25. The correspondence acquisition component 24 finds a correspondence between a duty ratio and a rudder turning speed based on a first rudder turning speed while a steering mechanism 11 is controlled at a first duty ratio, and a second rudder turning speed while the steering mechanism 11 is controlled at a second duty ratio. The duty ratio calculator 25 calculates the duty ratio corresponding to a specific rudder turning speed based on the correspondence found by the correspondence acquisition component 24.

Claims18

Dependent claims

An automatic steering device configured to control a steering mechanism for driving a rudder of a moving body based on a duty ratio of drive voltage applied to the steering mechanism corresponding to a rudder turning speed, the automatic steering device comprising:

a controller programmed to find a correspondence between the rudder turning speed and a value of the duty ratio based on the rudder turning speed while the steering mechanism is controlled by setting the duty ratio to a first value and the rudder turning speed while the steering mechanism is controlled by setting the duty ratio to a second value;
and
the controller being further programmed to calculate the duty ratio to attain an optimal rudder turning speed at a cruising speed of the moving body based on the correspondence.

Dependencies are inferred from the claim text.

Automatic steering device and automatic steering method

Life of this patent

Automatic steering device and automatic steering method

Life of this patent

Abstract

Claims18