Driving anti-skid control method and a system of a pure electric vehicle

A pure electric vehicle and control method technology, which is applied in the direction of electric vehicles, control drive, power management, etc., can solve the problems of adding additional data interfaces for external sensors, complex calculation methods, and difficulty in integration, achieving low cost, easy integration, and The effect of improving life and performance

Active Publication Date: 2018-12-18
NANJING YUEBOO POWER SYST CO LTD
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Problems solved by technology

The disadvantage of this invention is that the calculation method is relatively complicated, and the external sensors and additional data interfa

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  • Driving anti-skid control method and a system of a pure electric vehicle
  • Driving anti-skid control method and a system of a pure electric vehicle
  • Driving anti-skid control method and a system of a pure electric vehicle

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Embodiment Construction

[0047] The following is attached with the manual Figure 1-2 , the specific embodiment of the present invention will be further described.

[0048] Such as figure 1 Shown, method of the present invention comprises the following steps:

[0049] S1, according to the calculation formula of the vehicle dynamics and the actual statistical data of the motor speed change rate on the road with a good adhesion coefficient, the functional relationship between the motor speed change rate and the motor output torque, the transmission gear, and the motor speed is derived, And through the MATLAB simulation software, the value interval of the corresponding motor speed change rate when the automobile transmission is in the D gear and the R gear is calculated;

[0050] By analyzing the vehicle dynamics calculation formula and the measured statistical data of the vehicle running on a road with a good adhesion coefficient, the functional relationship between the motor speed change rate and the...

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Abstract

The invention belongs to the electric driving control field of electric vehicles, in particular to a driving anti-skid control method and a system of a pure electric vehicle. The method comprises: through MATLAB simulation software to calculate the range of motor speed change rate when the automobile transmission is in D gear and R gear, according to the real-time rotational speed of the motor tocalculate the motor rotational speed change rate of the current transmission gear, and judging whether the vehicle is in a slip state by judging whether the motor speed change rate exceeds a value range of the motor speed change rate of the corresponding gear, when the vehicle is judged to be in a slip state, the vehicle is removed from the slip state by correcting the requested torque value of the driver. The invention improves the driving force control performance of the whole vehicle without adding an external sensor and an additional data interface of the whole vehicle, and is easy to be integrated in the existing control system of the whole vehicle, and has good universality.

Description

technical field [0001] The invention belongs to the field of electric drive control of electric vehicles, and in particular relates to a driving anti-slip control method and system for pure electric vehicles. Background technique [0002] Compared with traditional fuel vehicles, pure electric vehicles can quickly reach the peak driving force output due to the use of electric motors. The driving anti-skid of pure electric vehicles on low-adhesion roads and the balance control of left and right wheel driving force brought about by distributed driving are the main technical means to improve the safety performance of the whole vehicle. In order to achieve a better starting effect, prevent starting slippage, and optimize starting power output control, the drive anti-skid control system of pure electric vehicles is particularly important. When pure electric vehicles are driven on bumpy roads and other places and adhere to the road surface, the road surface adhesion state of the w...

Claims

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Application Information

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IPC IPC(8): B60L15/20
CPCB60L15/20Y02T10/72
Inventor 李占江高超蒋元广李麟张含天
Owner NANJING YUEBOO POWER SYST CO LTD
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