Electric power generation controller for use in aircraft and electric power generating apparatus including same

Patent metadata

Field	Value
Publication number	US-11465767-B2
Application number	US-201817294003-A
Country	US
Kind code	B2
Filing date	Nov 19, 2018
Priority date	Nov 19, 2018
Publication date	Oct 11, 2022
Grant date	Oct 11, 2022

Abstract

An electric power generation controller for use in an aircraft is a controller of an electric power generating apparatus including a manual transmission configured to change speed of rotational power of an aircraft engine, transmit the rotational power to an electric power generator, and switch a gear stage by a friction clutch pressed by an actuator. The electric power generation controller includes a manual transmission control section configured to control the manual transmission. The manual transmission control section includes: a shift command section configured to output a shift signal which switches the gear stage of the manual transmission; and a clutch control section configured to, when switching the gear stage of the manual transmission, control clutch pressure of the actuator such that the friction clutch becomes a half-engaged state.

First claim

The invention claimed is:

1. An electric power generation controller for use in an aircraft,
the electric power generation controller being a controller of an electric power generating apparatus including a manual transmission configured to change speed of rotational power of an aircraft engine, transmit the rotational power to an electric power generator, and switch a gear stage by a friction clutch pressed by an actuator,
the electric power generation controller comprising a manual transmission control section configured to control the manual transmission, wherein
the manual transmission control section includes
a shift command section configured to output a shift signal which switches the gear stage of the manual transmission and
a clutch control section configured to, when switching the gear stage of the manual transmission, control clutch pressure of the actuator such that the friction clutch becomes a half-engaged state,

wherein:
the manual transmission control section further includes an electric power generation load receiving section configured to receive an electric power generation load of the electric power generator; and
when the friction clutch is in the half-engaged state, the clutch control section controls the actuator such that clutch pressure of the friction clutch increases as the electric power generation load increases.

2. The electric power generation controller according to claim 1 , wherein:
a continuously variable transmission is interposed on a power transmission path between the manual transmission and the electric power generator; and
the electric power generation controller further comprises a continuously variable transmission control section configured to control the continuously variable transmission based on an input rotational frequency of the continuously variable transmission such that the rotational frequency input to the electric power generator becomes constant.

3. The electric power generation controller according to claim 1 , wherein:
when the friction clutch is in a first state that is one of an engaged state or a disengaged state, the manual transmission is set to a first gear stage;
when the friction clutch is in a second state that is the other of the engaged state and the disengaged state, the manual transmission is set to a second gear stage;
the shift signal is a shift-down signal which decreases a change gear ratio or a shift-up signal which increases the change gear ratio;
when switching the gear stage of the manual transmission such that the change gear ratio decreases, the clutch control section controls the clutch pressure of the actuator such that the friction clutch becomes the half-engaged state, and then, controls the clutch pressure of the actuator such that the friction clutch becomes the second state; and
when switching the gear stage of the manual transmission such that the change gear ratio increases, the clutch control section controls the clutch pressure of the actuator such that the friction clutch becomes the half-engaged state, and then, controls the clutch pressure of the actuator such that the friction clutch becomes the first state.

4. An electric power generating apparatus for use in an aircraft,
the electric power generating apparatus comprising:
the electric power generation controller according to claim 1 ;
a manual transmission configured to change speed of rotational power of an aircraft engine and including a plurality of gear stages; and
an electric power generator configured to transmit power which has been changed in speed by the manual transmission.

5. An electric power generation controller for use in an aircraft,
the electric power generation controller being a controller of an electric power generating apparatus including a manual transmission configured to change speed of rotational power of an aircraft engine, transmit the rotational power to an electric power generator, and switch a gear stage by a friction clutch pressed by an actuator,
the electric power generation controller comprising a manual transmission control section configured to control the manual transmission; and
a rotational frequency receiving section configured to receive an output-side rotational frequency of the manual transmission,
wherein:
the manual transmission control section includes
a shift command section configured to output a shift signal which switches the gear stage of the manual transmission and
a clutch control section configured to, when switching the gear stage of the manual transmission, control clutch pressure of the actuator such that the friction clutch becomes a half-engaged state, wherein:

when the friction clutch is in the half-engaged state, the clutch control section controls the actuator such that clutch pressure of the friction clutch increases as the output-side rotational frequency of the manual transmission decreases.

Assignees

• Kawasaki Heavy Ind Ltd

Inventors

• Matsuda Kippei
• Imai Hideyuki
• Tanaka Kenichiro

Classifications

• F05D2270/024

  to keep rotational speed constant · CPC title

• F16D2500/1045

  Friction clutch · CPC title

• F16H2200/2005

  with one sets of orbital gears · CPC title

• F16H37/022

  the toothed gearing having orbital motion · CPC title

• F16D2500/30816

  Speed of the input shaft · CPC title