Method and system for estimating vehicle body tilt
AssigneeInvenSense, Inc.
InventorsJacques Georgy, Christopher Goodall, Abdelrahman Ali, Amr Al-Hamad, Anas Mahmoud, Billy Cheuk Wai Chan, Medhat Omr
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Abstract
Vehicle body tilt, representing a difference between a vehicle body frame of reference and a wheel-base frame of reference, is determined by obtaining information from sensor assemblies for the vehicle body and for the wheel-base. Navigational solutions are generated for the sensor assemblies using motion sensor data from the assemblies and absolute navigational information. Correspondingly, vehicle body tilt is determined based at least in part on the vehicle body navigation solution and the wheel-base navigation solution.
Claims22
A method for estimating vehicle body tilt, wherein tilt represents a difference a vehicle body frame of reference and a wheel-base frame of reference, comprising:
- a) obtaining information from at least one sensor assembly for a body of a vehicle, wherein the sensor assembly comprises motion sensors;
- b) obtaining information from at least one sensor assembly for a wheel-base of the vehicle, wherein the sensor assembly comprises motion sensors;
- c) obtaining absolute navigational information about the vehicle from an external source;
- d) generating a navigation solution for the vehicle body based at least in part on the vehicle body sensor assembly information and the absolute navigational information;
- e) generating a navigation solution for the wheel-base based at least in part on the wheel-base sensor assembly information and the absolute navigational information;
- and
- f) determining vehicle body tilt based at least in part on the vehicle body navigation solution and the wheel-base navigation solution.
A system for estimating vehicle body tilt, wherein tilt represents a difference a vehicle body frame of reference and a wheel-base frame of reference, comprising:
- a) at least one sensor assembly for a body of a vehicle, wherein the sensor assembly comprises motion sensors;
- b) at least one sensor assembly for a wheel-base of the vehicle, wherein the sensor assembly comprises motion sensors;
- c) a receiver for obtaining absolute navigational information about the vehicle from an external source;
- and
- d) at least one processor configured to:
- i) generate a navigation solution for the vehicle body based at least in part on the vehicle body sensor assembly information and the absolute navigational information;
- ii) generate a navigation solution for the wheel-base based at least in part on the wheel-base sensor assembly information and the absolute navigational information;
- and
- iii) determine vehicle body tilt based at least in part on the vehicle body navigation solution and the wheel-base navigation solution.
Dependencies are inferred from the claim text.