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Steering stability control method for an electric vehicle

A stability control method and technology for electric vehicles, applied in automatic steering control components, electric steering mechanisms, power steering mechanisms, etc., can solve problems such as oversteering and understeering, and achieve the effects of reducing damage, good protection and high stability

Active Publication Date: 2019-04-26
HOZON NEW ENERGY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Obviously, rear-wheel drive vehicles have better steering performance than front-wheel drive models, and are prone to oversteer, sometimes accompanied by understeer

Method used

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  • Steering stability control method for an electric vehicle
  • Steering stability control method for an electric vehicle
  • Steering stability control method for an electric vehicle

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Embodiment Construction

[0026] The following specific examples are only explanations of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications without creative contribution to the present embodiment as required after reading this specification, but as long as they are within the rights of the present invention All claims are protected by patent law.

[0027] Examples such as figure 1 , 2 , 3, the car model described in the present invention is a pure electric car model, the energy of the power battery is converted into the mechanical energy of the vehicle through the electric drive system, and the active torque demand of all drivers and the passive torque demand required by the safety of the vehicle body All are realized through the coordinated control of the vehicle controller.

[0028] The focus of the present invention is to describe the passive torque demand calculation method based on steering stability, and the vehicle contr...

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Abstract

The invention relates to the technical field of vehicle electric control systems of new energy cars, in particular to an electric car stable steering control method. Based on the stable steering passive torque demand calculating method, a vehicle controller controls an electric driving system to increase or decrease the output torque in a coordination mode through the deviation of the car stable deviation rate and the car actual deviation rate so as to conduct stable controlling on electric car steering, controllability is higher, the more timely effect is achieved, and the stability is higher.

Description

technical field [0001] The invention relates to the technical field of electronic control systems for new energy vehicles, in particular to a steering stability control method for electric vehicles. Background technique [0002] With the continuous maturity of new energy electric vehicle parts technology, more and more models have launched pure electric versions, such as lower-end models such as box cargo, and most of them are rear-drive models. Obviously, rear-wheel-drive vehicles have better steering performance than front-wheel-drive models, and are prone to oversteer, sometimes accompanied by understeer. [0003] In such rear-wheel-drive models, if the vehicle is not equipped with an ESP system, it cannot actively intervene in situations such as oversteering. At this time, the vehicle controller needs to actively intervene in the driving torque to reduce the damage caused by oversteering. [0004] The problem solved by the present invention is to judge oversteer or unde...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D5/04B62D6/00B62D101/00B62D113/00B62D137/00
CPCB62D5/0463B62D6/001
Inventor 肖岩方运舟彭庆丰张洪雷
Owner HOZON NEW ENERGY AUTOMOBILE CO LTD