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Apparatus and method for driving motor driven power steering

A technology of a steering device and a driving method, which is applied to electric steering mechanisms, power steering mechanisms, steering mechanisms, etc., can solve the problems of the negative impact of stable driving of vehicles, the impact of stable driving of vehicles, etc., to prevent vehicle instability, improve responsiveness, The effect of reducing lag

Active Publication Date: 2015-02-11
HYUNDAI MOBIS CO LTD
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

[0004] However, according to the damping logic of the conventional technology, the damping torque also increases linearly according to the increase of the steering angular velocity, so the hysteresis range in the center (On-Center) section will increase. Since a certain hysteresis range cannot be maintained, there is a problem with vehicle stability. Problems that negatively affect driving
[0005] Furthermore, due to the damping logic of conventional technology, excessive damping force is applied on low-friction road surfaces, which has the problem of negatively affecting the stable running of the vehicle

Method used

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  • Apparatus and method for driving motor driven power steering
  • Apparatus and method for driving motor driven power steering
  • Apparatus and method for driving motor driven power steering

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Embodiment Construction

[0039] A driving device and method for an electric steering device according to an embodiment of the present invention will be described below with reference to the accompanying drawings. In this process, the thickness of the lines shown in the drawings or the size of the constituent elements are exaggerated for clarity and convenience of explanation.

[0040] In addition, the terms described later are defined in consideration of the functions of the present invention, and may vary depending on the user, operator's intention, or practice. Therefore, the definitions of such terms should be based on the first half of this description. based on the content of the decision.

[0041] Generally speaking, the engine torque command of the MDPS is calculated using the values ​​calculated by the torque control logic, the damping control logic and the control active recovery logic. The present invention is used to calculate the damping force by the damping recovery logic, and its detaile...

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Abstract

An apparatus for driving a motor driven power steering (MDPS) includes: a first calculation unit (10 configured to calculate a damping force gain based on an MDPS output current; a second calculation unit (20) configured to calculate a damping force using vehicle speed and steering angle speed; and a damping force calculation unit (30) configured to calculate a final damping force using the damping force gain calculated through the first calculation unit and the damping force calculated through the second calculation unit.

Description

technical field [0001] The present invention relates to a drive device and method for an electric steering device, and more specifically relates to an electric steering device that uses the damping force calculated based on the vehicle speed and steering angular velocity, and the damping force gain based on the MDPS output current value to calculate the damping force Driving device and method. Background technique [0002] The electric steering system (MOTOR DRIVE POWER STEERING SYSTEM, hereinafter referred to as "MDPS") is a device that can turn the vehicle by generating the torque generated by the driver's steering wheel as actual output. [0003] This kind of MDPS is divided into C-MDPS, P-MDPS, R-MDPS, etc. according to which way to control the steering, where C-MDPS is the way to install the engine on the steering column shaft, and the damping logic used in C-MDPS is, use The function of the motor current to improve the safety of the yaw (yaw) of the vehicle. [0004]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04
CPCB62D5/0463B62D5/046
Inventor 安相僶具恩庆
Owner HYUNDAI MOBIS CO LTD
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