US 12,277,807 B2
Electric vertical takeoff and landing aircraft and control device for electric vertical takeoff and landing aircraft
Syun Sugita, Kariya (JP); Akira Iwakawa, Kariya (JP); Mariko Hashimoto, Kariya (JP); and Yuuichi Takemura, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on Feb. 23, 2022, as Appl. No. 17/678,156.
Application 17/678,156 is a continuation of application No. PCT/JP2020/030598, filed on Aug. 11, 2020.
Claims priority of application No. 2019-155209 (JP), filed on Aug. 28, 2019; application No. 2019-155214 (JP), filed on Aug. 28, 2019; and application No. 2020-099899 (JP), filed on Jun. 9, 2020.
Prior Publication US 2022/0180670 A1, Jun. 9, 2022
Int. Cl. G07C 5/00 (2006.01); B64C 29/00 (2006.01); G07C 5/08 (2006.01)
CPC G07C 5/006 (2013.01) [B64C 29/00 (2013.01); G07C 5/0808 (2013.01); G07C 5/085 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An electric vertical takeoff and landing aircraft with a plurality of electric drive systems each including a drive motor for turning a rotor and a drive unit for driving the drive motor, the electric vertical takeoff and landing aircraft comprising:
a drive information detection unit configured to detect, for each of the plurality of electric drive systems, drive information including at least one of motor information serving as an indicator of a deterioration state of the drive motor and drive unit information serving as an indicator of a deterioration state of the drive unit;
a maintenance necessity detection unit configured to detect necessity or lack of necessity of maintenance on each of the plurality of electric drive systems based on the detected drive information and drive history information about a history of the drive information, wherein the detection includes at least a component replacement request based on the drive history information and a diagnosis request based on the drive information, the drive information including a driving current value of the drive motor,
wherein the drive history information is cumulative load information that is a history of the driving state of the electric drive system, and is updated by the drive information during flight; and
a storage control unit configured to store the drive history information about the history of the drive information, wherein the drive history information includes at least the driving current value detected by a current sensor,
wherein each of the plurality of electric drive systems includes:
a drive motor;
a drive unit configured as an electronic device including an inverter circuit and a controller that controls the inverter circuit; and
the current sensor that measures the driving current supplied to the drive motor from the inverter circuit, and
wherein each of the electric drive systems is connected to a different rotor.