System and method for estimating wheel speed of vehicle
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorsJi Won Oh, Jeong Soo Eo
Life of this patent
Estimating the term…
Abstract
A system and method for estimating a wheel speed of a vehicle are provided. The system includes wheel speed sensor that detects a rotation speed of a wheel of a vehicle and a motor speed sensor that detects a speed of the driving motor. A controller receives a signal of the wheel speed sensor, a signal of the motor speed sensor, and information regarding a gear stage indicating current gear stage status of the transmission, and estimates a wheel speed including direction information of wheel rotation.
Claims17
A system for estimating a wheel speed of a vehicle, wherein the vehicle includes a driving motor and a transmission, and performs reverse movement using the transmission, the system comprising:
- a wheel speed sensor configured to detect a rotation speed of a wheel of the vehicle;
- a motor speed sensor configured to detect a speed of the driving motor;
- and
- a controller configured to receive a signal of the wheel speed sensor, a signal of the motor speed sensor, and information regarding a gear stage indicating a current gear stage status of the transmission, and estimate a wheel speed to which directionality of wheel rotation is added,
- wherein the controller includes a direction determining module, configured to obtain direction information indicating a direction of wheel rotation from motor speed information obtained from the signal of the motor speed sensor and the gear stage information, and
- wherein the controller is configured to estimate the wheel speed including the directionality of wheel rotation, using real-time direction information obtained by the direction determining module and the signal of the wheel speed sensor, when the gear stage changes to a reverse gear by manipulating a shift lever during forward movement of the vehicle at a low speed or the gear change changes to a drive gear during reverse movement of the vehicle at the low speed.
A method for estimating a wheel speed of a vehicle, wherein the vehicle includes a driving motor and a transmission and performs reverse movement using the transmission, the method comprising:
- receiving, by a controller, a signal of a wheel speed sensor, a signal of a motor speed sensor, and information regarding a gear stage indicating a current gear stage status of the transmission;
- obtaining, by the controller, motor speed information obtained from the signal of the motor speed sensor by a direction determining module and direction information indicating a direction of wheel rotation from the information regarding the gear stage;
- and
- estimating, by the controller, a wheel speed to which the directionality of wheel rotation is added, using real-time direction information obtained by the signal of the wheel speed sensor and by the direction determining module, when the gear stage changes to a reverse gear by manipulating a shift lever during forward movement of the vehicle at a low speed or the gear change changes to a drive gear during reverse movement of the vehicle at the low speed.
Dependencies are inferred from the claim text.