Method and apparatus for determining vehicle location based on motor feedback
First Claim
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1. A method comprising:
- receiving, from a speed measurement device of a vehicle having an autonomous driving mode, first speed information identifying a first current speed of the vehicle as measured by the speed measurement device;
receiving, from a displacement measuring device, displacement information identifying an orientation of a first rotor at a first time and an orientation of the first rotor at a second time;
determining, by one or more computing devices having one or more processors, second speed information identifying a second current speed of the vehicle using a change in the orientations of the first rotor between the first time and the second time;
comparing, by the one or more computing devices, the first speed information to the second speed information;
determining, by the one or more computing devices, using the comparison whether to use third speed information measured by the speed measurement device to control the vehicle in an autonomous driving mode; and
controlling, by the one or more computing devices, the vehicle in the autonomous driving mode based on the determination of whether to use third speed information measured by the speed measurement device.
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Abstract
A method and apparatus are provided for determining the location of a vehicle. According to one aspect the method and apparatus the movements of motor rotors in a vehicle are monitored and used to determine speed, travel distance and/or travel path of a vehicle may be determined. Using various navigation techniques, the distance and travel path may then be used to determine the vehicle'"'"'s location. Furthermore, movements of the motor rotors may also be used to report the positions of the steering and drive systems for the purpose of informing the vehicle controller as a method of feedback.
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Citations
20 Claims
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1. A method comprising:
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receiving, from a speed measurement device of a vehicle having an autonomous driving mode, first speed information identifying a first current speed of the vehicle as measured by the speed measurement device; receiving, from a displacement measuring device, displacement information identifying an orientation of a first rotor at a first time and an orientation of the first rotor at a second time; determining, by one or more computing devices having one or more processors, second speed information identifying a second current speed of the vehicle using a change in the orientations of the first rotor between the first time and the second time; comparing, by the one or more computing devices, the first speed information to the second speed information; determining, by the one or more computing devices, using the comparison whether to use third speed information measured by the speed measurement device to control the vehicle in an autonomous driving mode; and controlling, by the one or more computing devices, the vehicle in the autonomous driving mode based on the determination of whether to use third speed information measured by the speed measurement device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system comprising one or more computing devices each having one or more processors, the one or more processors being configured to:
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receive, from a speed measurement device of a vehicle having an autonomous driving mode, first speed information identifying a first current speed of the vehicle as measured by the speed measurement device; receive, from a displacement measuring device, displacement information identifying an orientation of a first rotor at a first time and an orientation of the first rotor at a second time; determine second speed information identifying a second current speed of the vehicle using a change in the orientations of the first rotor between the first time and the second time; compare the first speed information to the second speed information; determine using the comparison whether to use third speed information measured by the speed measurement device to control the vehicle in an autonomous driving mode; and control the vehicle in the autonomous driving mode based on the determination of whether to use third speed information measured by the speed measurement device. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A non-transitory machine readable recording medium on which instructions are stored, the instructions, when executed by one or more processors, cause the one or more processors to perform a method, the method comprising:
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receiving, from a speed measurement device of a vehicle having an autonomous driving mode, first speed information identifying a first current speed of the vehicle as measured by the speed measurement device; receiving, from a displacement measuring device, displacement information identifying an orientation of a first rotor at a first time and an orientation of the first rotor at a second time; determining second speed information identifying a second current speed of the vehicle using a change in the orientations of the first rotor between the first time and the second time; comparing the first speed information to the second speed information; determining using the comparison whether to use third speed information measured by the speed measurement device to control the vehicle in an autonomous driving mode; and controlling the vehicle in the autonomous driving mode based on the determination of whether to use third speed information measured by the speed measurement device. - View Dependent Claims (20)
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Specification