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US 12,559,073 B2Granted
Self-calibrating wheel speed signals for adjusting brake and chassis controls
AssigneesHyundai Motor Company, Kia Corporation
InventorYan Xia
Life of this patent
Estimating the term…
Abstract
Systems and methods for self-calibrating wheel speed signals are provided. The method may comprise measuring, using one or more wheel speed sensors of a vehicle, a wheel speed for one or more wheels of the vehicle, detecting, using a detection module, an initial wheel speed error by comparing a measured wheel speed against a reference wheel speed, generating a wheel speed signal for each of the one or more wheels, calculating, using a recalibration module, a correction factor for each of the one or more wheels to apply to each wheel speed signal, and applying, for each of the one or more wheels, the correction factor to the wheel speed signal by multiplying each wheel speed by a corresponding correction factor.
Claims9
A method for self-calibrating wheel speed signals, comprising:
- measuring, using one or more wheel speed sensors of a vehicle, a wheel speed for one or more wheels of the vehicle;
- detecting, using a detection module, an initial wheel speed error by comparing a measured wheel speed against a reference wheel speed;
- generating a wheel speed signal for each of the one or more wheels;
- determining, using the detection module, that the initial wheel speed error is greater than a wheel speed error threshold;
- in response to determining that the initial wheel speed error is greater than the wheel speed error threshold, calculating, using a recalibration module, a correction factor for each of the one or more wheels to apply to each wheel speed signal;
- determining, using an electronic stability control (ESC) rollover module, that the correction factor is large enough to prevent a rollover due to an increased center of gravity (CG) height;
- and
- in response to determining the correction factor is large enough to prevent the rollover due to the increased CG height, modifying, using the ESC rollover module, an ESC rollover control threshold.
5 more elements
A system for self-calibrating wheel speed signals, comprising:
- a vehicle, comprising:
- one or more wheels;
- one or more wheel speed sensors configured to measure a wheel speed for each of the one or more wheels;
- and
- a processor, configured to:
- detect, using a detection module, an initial wheel speed error by comparing a measured wheel speed against a reference wheel speed;
- generate a wheel speed signal for each of the one or more wheels;
- determine, using the detection module, whether the initial wheel speed error is greater than a wheel speed error threshold;
- in response to determining that the initial wheel speed error is not greater than the wheel speed error threshold, set the detection module in a standby mode;
- in response to determining that the initial wheel speed error is greater than the wheel speed error threshold, calculate, using a recalibration module, a correction factor for each of the one or more wheels to apply to each wheel speed signal;
- determine, using an electronic stability control (ESC) rollover module, whether the correction factor is large enough to prevent a rollover due to an increased center of gravity (CG) height;
- in response to determining that the correction factor is not large enough to prevent the rollover due to the increased CG height, apply, for each of the one or more wheels, the correction factor to the wheel speed signal by multiplying each wheel speed by the corresponding correction factor;
- and
- in response to determining that the correction factor is large enough to prevent the rollover due to the increased CG height, modify, using the ESC rollover module, an ESC rollover control threshold.
11 more elements
A system for self-calibrating wheel speed signals, comprising:
- a vehicle, comprising:
- one or more wheels;
- and
- one or more wheel speed sensors configured to measure a wheel speed for each of the one or more wheels;
- and
- a computing device, comprising a processor and a memory, configured to store programming instructions that, when executed by the processor, cause the processor to:
- detect, using a detection module, an initial wheel speed error by comparing a measured wheel speed against a reference wheel speed;
- generate a wheel speed signal for each of the one or more wheels;
- determine whether the initial wheel speed error is greater than a wheel speed error threshold;
- in response to determining the initial wheel speed error is not greater than the wheel speed error threshold, set the detection module in a standby mode;
- in response to determining that the initial wheel speed error is greater than the wheel speed error threshold, calculate, using a recalibration module, a correction factor for each of the one or more wheels to apply to each wheel speed signal;
- determine, using an electronic stability control (ESC) rollover module, whether the correction factor is large enough to prevent a rollover due to an increased center of gravity (CG) height;
- in response to determining that the correction factor is not large enough to prevent the rollover due to the increased CG height, apply, for each of the one or more wheels, the correction factor to the wheel speed signal by multiplying each wheel speed by a corresponding correction factor;
- and
- in response to determining that the correction factor is large enough to prevent the rollover due to the increased CG height, modify, using the ESC rollover module, an ESC rollover control threshold.
12 more elements
Dependencies are inferred from the claim text.