System and method for controlling vehicle wheel using Intelligent Tire Sensor

Abstract

The invention provides a system and method for controlling a vehicle wheel using an Intelligent Tire Sensor. The system comprises: an information acquiring part, a controller, and brake driving part. The information acquiring part acquires running information and to-ground vertical force information of a vehicle. The controller calculates center of gravity of the vehicle by using the running information and the vertical force information acquired, calculates a target Yaw Rate of the vehicle by using the center of gravity calculated and the running information, and generates control information of wheels by using the difference between the object Yaw Rate calculated and an actual Yaw Rate included in the running information. The brake driving part controls the wheels based on the control information generated. Vertical force information of the Intelligent Tire Sensor has a less delay compared with sensor information applied on a traditional ESC system so as to reduce vehicle steer and achieves vehicle behavior stabilization as early as possible.

Description

technical field [0001] The present invention relates to a system and method for controlling wheels using information detected by sensors mounted on a vehicle. Specifically, the wheel control system and method thereof are used to control the wheels of a running vehicle by using the information measured by the smart tire sensor installed on the vehicle, so as to keep the vehicle in a stable posture. Background technique [0002] The ESC (Electronic Stability Control) system is an active safety system that helps maintain driving safety by individually controlling each wheel of the vehicle after comparing and analyzing the driver's steering intention and the actual vehicle movement. [0003] Specifically, the ESC system determines that the vehicle becomes oversteer (Over-Steer, a phenomenon in which the vehicle rotates more than the steering wheel angle) or understeer (Under-Steer, a phenomenon in which the vehicle rotates less than the steering wheel angle). In the event of in...

AI Technical Summary

Problems solved by technology

[0005] However, the sensor information of the traditional ESC system has a large delay in the signal. After the vehicle becomes unstable, the yaw rate is compensated to stabilize the vehicle and the wheels cannot be controlled quickly.

Moreover, the tire pressure sensor of the ESC system uses the estimated value estimated by the sensor instead of the actual measured value measured by the sensor to calculate the yaw rate, so the accuracy of the information is low

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