Construction and operation of electric or hybrid aircraft
This disclosure describes at least embodiments of an aircraft monitoring system for an electric or hybrid airplane. The aircraft monitoring system can be constructed to enable the electric or hybrid aircraft to pass certification requirements relating to a safety risk analysis. The aircraft monitoring system can have different subsystems for monitoring and alerting of failures of components, such as a power source for powering an electric motor, of the electric or hybrid aircraft. The failures that pose a greater safety risk may be monitored and indicated by one or more subsystems without use of programmable components.
1. A control system for a vehicle motor that includes a plurality of field coils, the control system including a controller configured to operate the vehicle motor to compensate for a failure of one or more of the plurality of field coils, the control system comprising:
a memory device configured to store an operating parameter;
a controller configured to increase, according to the operating parameter, a power input to one or more individual field coils of a plurality of field coils of a motor to compensate for a failure of one or more of the plurality of field coils, the plurality of field coils being configured to generate a torque on a rotor of the motor, the motor being supported by a housing and configured to propel the housing; and
a sensor configured to detect the failure of the one or more of the plurality of field coils,
wherein the controller is configured to no longer provide an electrical current to a first field coil of the plurality of field coils in response to detecting the failure of the first field coil.
2. The control system of claim 1 , wherein the controller is configured to vary a pitch of a propeller supported by the housing to compensate for the failure of the one or more of the plurality of field coils.
3. The control system of claim 1 , wherein the controller is configured to vary a rotation rate of the motor to compensate for the failure of the one or more of the plurality of field coils.
4. A control system for a vehicle motor that includes a plurality of field coils, the control system including a controller configured to operate the vehicle motor to compensate for a failure of one or more of the plurality of field coils, the control system comprising:
a memory device configured to store an operating parameter; and
a controller configured to increase, according to the operating parameter, a power input to one or more individual field coils of a plurality of field coils of a motor to compensate for a failure of one or more of the plurality of field coils, the plurality of field coils being configured to generate a torque on a rotor of the motor, the motor being supported by a housing and configured to propel the housing,
wherein the controller is configured to:
prior to a failure of a first field coil of the plurality of field coils, provide an electrical current one time to all of the plurality of field coils in an order prior to providing the electrical current another time to any of the plurality of field coils, and
subsequent to the failure of the first field coil, no longer provide the electrical current to the first field coil.
5. The control system of claim 4 , wherein the controller is configured to, subsequent to the failure of the first field coil, increase the power input by increasing an electrical current provided to at least some of the plurality of field coils to compensate for the failure of the first field coil.
6. The control system of claim 4 , wherein the controller is configured to, subsequent to the failure of the first field coil, increase the power input by increasing an electrical current provided to a second field coil and a third field coil of the plurality of field coils, the first field coil being before the second field coil and after the third field coil in the order.
7. The control system of claim 1 , wherein the sensor is configured to detect the failure of the one or more of the plurality of field coils from a temperature, a voltage, an electrical current, or a magnetic field measured by the sensor.
8. The control system of claim 1 , wherein the controller is configured set the operating parameter responsive to an output from the sensor.
9. The control system of claim 1 , wherein the controller is configured to increase the power input by increasing an electrical current provided to the one or more individual field coils to compensate for the failure of at least two of the plurality of field coils.
10. The control system of claim 1 , wherein the controller is configured increase the power input during each modulation cycle for the motor.
11. The control system of claim 1 , wherein the controller is configured to maintain a power output of the motor above a threshold despite the failure of the one or more of the plurality of field coils.
12. The control system of claim 1 , wherein the operating parameter is indicative of which of the one or more of the plurality of field coils have failed.
13. The control system of claim 1 , wherein the motor is an electric motor.
14. The control system of claim 1 , wherein the housing is configured to fly.
15. A method of operating a motor of a vehicle, the method comprising:
supporting a motor by a housing;
providing power input to individual field coils of a plurality of field coils of a motor to generate a torque on a rotor of the motor;
propelling the housing by the motor; and
increasing the power input provided to one or more of the individual field coils of the plurality of field coils to compensate for a failure of one or more of the plurality of field coils,
wherein said increasing comprises, subsequent to the failure of a first field coil of the plurality of field coils, increasing an electrical current provided to at least two of the plurality of field coils to compensate for the failure of the first field coil.
16. The method of claim 15 , further comprising varying a pitch of a propeller supported by the housing to compensate for the failure of the one or more of the plurality of field coils.
17. The method of claim 15 , further comprising varying a rotation rate of the motor supported by the housing to compensate for the failure of the one or more of the plurality of field coils.
18. The method of claim 15 , wherein said propelling causes the housing to fly.
19. The method of claim 15 , further comprising detecting, by a sensor, the failure of the one or more of the plurality of field coils.
20. The method of claim 15 , wherein said increasing comprises increasing the power input provided to the one or more of the individual field coils of the plurality of field coils so that a power output of the motor is maintained above a threshold despite the failure of the one or more of the plurality of field coils.
21. The method of claim 15 , wherein said increasing comprises increasing the power input according to an operating parameter that indicates which of the one or more of the plurality of field coils failed.