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Feedback-based real-time control device and method for electric vehicle yaw stability

A real-time control, electric vehicle technology that is used in control gear, vehicle components, transportation, and packaging to ensure yaw stability

Active Publication Date: 2021-03-12
ZHEJIANG DONGFANG ELECTROMECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of this application is to provide a real-time control method for the yaw stability of a distributed drive electric vehicle based on sensor feedback, so as to solve the problem of precise control of the yaw stability of a distributed drive electric vehicle during driving

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  • Feedback-based real-time control device and method for electric vehicle yaw stability

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Embodiment Construction

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0032] It should be understood that terms such as "having", "comprising" and "including" as used herein do not entail the presence or addition of one or more other elements or combinations thereof.

[0033] Such as figure 1 As shown, a feedback-based real-time control device for yaw stability of an electric vehicle includes an upper controller 1 and a lower controller 2, the upper controller 1 and the lower controller 2 are separated, and the transmission of the vehicle state is completed through the signal transmission line .

[0034] Such as figure 2 As shown, the upper controller 1 is provided with three parts: a sensor unit 3, a model predictive controller 4 and a direct yaw moment calculation unit 5, the output end of the sensor unit 3 is connected to the input end of...

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Abstract

The invention discloses a feedback-based real-time control device and method for the yaw stability of an electric vehicle. The device includes an upper controller and a lower controller. The upper controller is provided with a sensor unit, a model predictive controller and a direct yaw moment calculation unit. Three parts; the lower controller has two parts: a judgment decision-making unit and a direct yaw moment execution unit, and the direct yaw moment execution unit controls the driving torque of the target wheel. This method adopts a layered control structure, the required signal is provided by the sensor, and the upper layer controller is designed by using the measurable quantity, the real-time feedback of the sensor and the model predictive control algorithm, and the calculation of the yaw stability of the whole vehicle is calculated. The required direct yaw moment. The lower-level controller ensures that the direct yaw torque command issued by the upper-level controller is realized through the distribution of drive torque, ensuring that the vehicle can achieve stable driving under different working conditions, and improving the yaw stability of the electric vehicle.

Description

technical field [0001] The invention relates to the technical field of electric vehicles and their stability control, in particular to a real-time control method for the yaw stability of a distributed drive electric vehicle based on sensor feedback, and in particular to a feedback-based real-time control device and method for the yaw stability of an electric vehicle . Background technique [0002] In today's increasingly severe energy shortage and increasingly serious environmental pollution, the development of electric vehicles is the general trend. Distributed drive electric vehicles have four independent hub motors. At the same time, the motors respond quickly, and parameters such as torque and speed are easy to obtain. Therefore, the driving torque of each wheel can be independently and accurately controlled directly to improve the driving performance of the electric vehicle under severe road conditions. [0003] Vehicle yaw stability control is very important for dist...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W40/10B60W40/105B60W40/112B60W30/02B60W50/00B60W10/08
CPCB60W10/08B60W30/02B60W40/10B60W40/105B60W40/112B60W50/00B60W2050/0031B60W2520/10B60W2520/125B60W2520/28B60W2540/18B60W2710/083
Inventor 袁小芳
Owner ZHEJIANG DONGFANG ELECTROMECHANICAL
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