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Method for estimating steering wheel torque of a vehicle

A steering wheel and torque technology, which is applied in the field of estimating the steering wheel torque of vehicles, can solve different and difficult to accurately estimate the steering wheel torque of the driver, and achieve the effect of improving control accuracy and accurately assisting steering force

Active Publication Date: 2022-07-29
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, when the driver actually turns the steering wheel, the torque sensed value of the torque sensor based on the nonlinear characteristics of the mechanism and the driver's steering wheel torque (the driver's steering intention) may vary depending on the torque sensor in the electric power steering. varies by location in the system
Therefore, when the electric power steering system is controlled based on the torque sensing signal from the torque sensor, it is difficult to accurately estimate the driver's steering wheel torque (the driver's steering intention)

Method used

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  • Method for estimating steering wheel torque of a vehicle
  • Method for estimating steering wheel torque of a vehicle
  • Method for estimating steering wheel torque of a vehicle

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Embodiment Construction

[0020] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0021] Embodiments of the present invention may be configured with a driver torque estimator that takes into account the actual driver steering wheel torque T while the driver is turning the steering wheel driver and the torque T sensed by the torque sensor as the torque of the driver's steering wheel sensor The difference between uses the state variables of the components included in the steering system modeling to estimate the actual driver steering wheel torque such that the estimated driver steering wheel torque T driver and the torque T sensed by the torque sensor sensor The difference therebetween can be used to compensate the target steering torque input to the feedback controller of the electric power steering system, and the steering force of the electric power steering system can be accurately assisted.

[0022] figure 2 is...

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Abstract

A method for operating a motor vehicle, comprising: sensing a sensed torque based on driver interaction with a steering wheel as part of an electric power steering system, the sensed torque sensed using a torque sensor; The driver steering wheel torque is calculated using the state variables of the steering system model based on the electric power steering system; and the driver steering wheel torque calculated from the steering system model and the sensed rotation sensed by the torque sensor are controlled by the controller. The difference between the moments converges to zero.

Description

technical field [0001] The present invention relates to a method for estimating steering wheel torque of a vehicle. Background technique [0002] An electric power steering system (eg, Motor Driven Power Steering or MDPS system) is a vehicle speed-sensitive power steering apparatus for changing steering force based on travel speed. In this system, the ECU of the electric power steering module provides the driver with the best steering feel by controlling the steering angle and the operation of the motor based on the vehicle speed. [0003] MDPS systems, which are examples of electric power steering systems, are classified into a column type (in which a motor is mounted on a steering column) and a rack type (in which a motor is mounted on a rack connected to a steering shaft). [0004] The electric power steering system calculates the driver's intention to turn the steering wheel (driver torque) based on a torque sensed value of a torque sensor that senses the torque of a to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D5/04
CPCB62D6/10B60W40/00B60W2510/202G06F30/17
Inventor 成宇济李钟昊曹承范
Owner HYUNDAI MOTOR CO LTD