Control method and device

A technology of controlling parameters and feedback control, applied in transportation and packaging, automatic steering control components, steering mechanisms, etc., can solve the problems of reducing vehicle speed, large braking operation, shortening tire life, etc., to avoid shortening tire life. , the effect of enhancing the handling characteristics

Active Publication Date: 2020-09-11
GREAT WALL MOTOR CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0005] In view of this, the present invention aims to propose a control method and device to solve the problem that the current ESC system may use a large braking operation to greatly reduce the speed of the vehicle, resulting in shortened tire life.

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Embodiment Construction

[0051] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0052] An Electric Power Steering (EPS) system is an intelligent actuator that superimposes electronic control of assist torque to the vehicle steering system. The main purpose of the EPS system is to provide comfort to the driver by increasing torque. However, recent developments have shown that EPS systems can also be used to enhance vehicle stability.

[0053] The EPS system is installed on the steering column, rack or pinion and combined with the electric motor to complete the steering torque superposition work. The main function of the EPS system is to provide electric power steering, which allows the driver to turn the steering wheel more easily to improve driving comfort. The steering assist provided by the EPS system, that is, the amount of auxiliary torque is proportional to the driver's steering ...

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Abstract

The invention provides a control method and device which are applied to a vehicle with an electric power steering system. The electric power steering system comprises a first control subsystem and a second control subsystem. The method comprises the steps that the front steering angle, the steering torque, the yaw rate and the vehicle speed of the vehicle are obtained; a vehicle yaw rate associated with the first control subsystem is determined according to the front steering angle, the steering torque, the yaw rate and the vehicle speed; an expected deviation value associated with the secondcontrol subsystem is determined based on the vehicle yaw rate; and a control parameter is determined based on the expected deviation value, so that the vehicle adjusts the steering torque according tothe control parameter to travel. According to the method, the vehicle can be controlled to adjust the steering torque according to the control parameters, the overall vehicle control characteristic of the vehicle is enhanced, large braking operation is prevented from being adopted to greatly reduce the speed of the vehicle, and the situation that the service life of tires is shortened is avoided.

Description

technical field [0001] The invention relates to the technical field of vehicle control, in particular to a control method and device. Background technique [0002] With the gradual development of the field of vehicle control technology, the performance of the active control subsystem in the vehicle is continuously improved, and the active control subsystem can enhance the comfort and safety of the driver. [0003] At present, the active control subsystem mainly includes an electronic stability control (Electronic Stability Control, ESC) system. ESC systems typically sense wheel slippage based on relevant parameter inputs from wheel speed sensors, steering angle sensors, vehicle speed sensors, and yaw rate sensors. ESC systems use relevant parameter inputs to reduce engine torque and apply vehicle brakes to help maintain The vehicle travels along a predetermined path to assist the vehicle driver to drive on wet or rough roads (such as ice, snow or gravel). [0004] However,...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04B62D6/00B62D101/00B62D137/00
CPCB62D5/0463B62D6/00B62D6/003B62D6/008B62D15/021
Inventor 约瑟夫.艾哈迈德.古奈姆孙玉牛小锋张英富徐波王彬彬陈建宏
Owner GREAT WALL MOTOR CO LTD
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