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Distributed four-wheel drive torque control method

A torque control and distributed technology, which is applied in the field of distributed four-wheel drive torque control, can solve the problems of unconsidered driving intention and distributed four-wheel drive torque control delay lag, etc., to achieve the effect of solving delay lag and accurate calculation results

Active Publication Date: 2021-09-03
CHINA FIRST AUTOMOBILE
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a distributed four-wheel drive torque control method to solve the problems of time lag and unconsidered driving intention in distributed four-wheel drive torque control

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  • Distributed four-wheel drive torque control method

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Embodiment Construction

[0108] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0109] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two ...

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Abstract

The invention belongs to the technical field of electric vehicle driving control, and discloses a distributed four-wheel-drive torque control method, which comprises the following steps of: firstly, acquiring current parameters of a vehicle; then calculating a reference vehicle speed, a vehicle acceleration, a pavement utilization adhesion coefficient and a road gradient; and calculating a driving stability factor, selecting a vehicle working mode, and calculating torques of four motors to realize distributed four-wheel-drive torque control. According to the method, under the condition of considering the driving intention, the problem of time delay and lag of torque closed-loop control of distributed four-wheel drive based on the vehicle operation stability state is solved.

Description

technical field [0001] The invention relates to the technical field of electric vehicle drive control, in particular to a distributed four-wheel drive torque control method. Background technique [0002] At present, the four-wheel drive control of electric vehicles mainly depends on the vehicle state (such as wheel speed, steering wheel angle, yaw acceleration, etc.) The recognition of intention, and the acquisition of the vehicle state depends on the sensor, which is affected by the accuracy of the sensor signal and the transmission speed, and there is a problem of response lag; at the same time, the control method of the steering condition is mainly closed-loop control based on yaw feedback control through braking. There is also the problem of time delay and lag, and the control method is single, making it difficult to realize productization. Contents of the invention [0003] The purpose of the present invention is to provide a distributed four-wheel drive torque contr...

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Application Information

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IPC IPC(8): B60W10/08B60W30/182B60W40/105B60W40/10B60W40/076B60W40/064
CPCB60W10/08B60W30/182B60W40/105B60W40/10B60W40/076B60W40/064Y02T10/72
Inventor 吴爱彬张天强刘元治崔金龙周泽慧孙起春赵洋
Owner CHINA FIRST AUTOMOBILE