Thruster control device and thruster control method
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsYukihiro Okumura, Masaaki Nagase
Life of this patent
Estimating the term…
Abstract
A thruster control device has an opening degree estimating section and an opening degree control section. The opening degree estimating section calculates an estimated opening degree of a valve showing a rate at which the valve is opened, based on a balance of an acting force applied to a valve element of the valve to adjust a quantity of combustion gas to be ejected from a thruster and a fluid force applied to the valve element by the ejected combustion gas. The opening degree control section determines a target opening degree based on the estimated opening degree to control the opening degree of the valve.
Claims10
A thruster control device comprising:
- an opening degree estimating section configured to calculate an estimated opening degree of a valve showing a rate at which the valve is opened, based on a balance of an acting force applied to a valve element of the valve to adjust a quantity of combustion gas to be ejected from a thruster and a fluid force applied to the valve element by an ejected combustion gas;
- and
- an opening degree control section configured to determine a target opening degree based on the estimated opening degree to control an opening degree of the valve,
- wherein the opening degree estimating section calculates the fluid force based on an acceleration of the valve element and the acting force, and calculates the estimated opening degree based on the fluid force.
A thruster control method comprising:
- calculating an estimated opening degree of a valve showing a rate at which the valve is opened, based on a balance of an acting force to applied to a valve element of the valve to adjust a quantity of combustion gas to be ejected from a thruster and a fluid force applied to the valve element by an ejected combustion gas;
- and
- determining a target opening degree based on the estimated opening degree to control an opening degree of the valve,
- wherein the calculating the estimated opening degree of the valve comprises:
- calculating the fluid force based on an acceleration of the valve element and the acting force;
- and
- calculating the estimated opening degree based on the fluid force.
Dependencies are inferred from the claim text.