Title:
垂直離着陸機
Document Type and Number:
Japanese Patent JP4240112
Kind Code:
B2
Abstract:
A vertical take-off and landing aircraft that includes AC motors, which drive fans that propel the aircraft, and a control device for controlling the AC motors adaptively based on a thrust control amount from an attitude controller. In particular, the drive controller performs switching to convert DC from a power source to three-phase AC at a predetermined frequency to be supplied to the AC motors. The drive controller reduces the control frequency of the three-phase AC to be applied to the AC motor to reduce the control resolution when the flight mode is switched from a vertical flight control mode to a horizontal flight control mode, in which the control amount to correct the external forces is smaller. Therefore, it is possible to reduce the power loss in the controller and thus the power consumption compared to conventional vertical take-off and landing aircrafts, in which the control resolution is always constant.
Inventors:
Ishiba Masatsugu
Application Number:
JP2006307067A
Publication Date:
March 18, 2009
Filing Date:
November 13, 2006
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
B64C29/00
Domestic Patent References:
| JP2005125976A | ||||
| JP2005502540A | ||||
| JP2005319970A | ||||
| JP2003180095A | ||||
| JP7222478A |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshiki Kuroki
Kazuhiro Ueda
Yoshiki Kuroki
Kazuhiro Ueda