Sinfonia Technology Co., Ltd.

Sumitomo Precision Products Co., Ltd.

Ihi Aerospace Co., Ltd.

Masayuki Takada

Hiroshi Saito

Hitoshi Oyori

Nobuyuki Nakanishi

Taku Kondo

Toshiyuki Kumada

Masaaki Monte

Satoshi Ihara

Kazuhiro Masutani

Provided is a wheel drive system for aircraft RS including a motorthat is connected to a wheel, and provided with two voltage supply lines Land Lfor supplying the voltages Vta and Vpr with varying the length of a windingto be energized; a voltage supply unit for supplying the voltage Vta and Vpr to the two voltage supply lines Land L; and a control unitfor controlling the voltage supply unit, wherein the control unitis configured to select one of the two voltage supply lines Land L, and supply the voltage Vta or Vpr, by controlling the voltage supply unit.

Wheel drive system for aircraft

The present invention is to provide an electro hydrostatic actuator excellent in a snubbing characteristic including a cylinder type actuator main body, a pistonhaving a piston rod, the piston slidingly moving in a cylinder of the actuator main body, a motor, a pumpfor supplying fluid according to the rotation of the motor, a mechanism for adjusting a running amount of the fluid into and from the cylinder according to the motion of the piston, and a reservoirfor adjusting the supply of the fluid corresponding to a volume difference generated according to the motion of the piston, and a controllerwhich controls the number of revolutions of the motor according to the calculated load torque, and a snubbing control method used for this. An electro hydrostatic actuator of realizing a snubbing mechanism capable of increasing energy efficiency, when used for a landing gear retraction/extension device of an airplane, can be provided.

Electro-hydrostatic actuator excellent in snubbing characteristic, and drive device used for the same, and control method used for the same

Growing community of inventors

Amagasaki, Japan

Masayuki Takada