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Zero pedal torque control method of purely-power-driven vehicle

A technology of torque control and control method, which is applied to electric vehicles, control drives, control devices, etc., to achieve the effects of improving start-up response time, driving comfort, and smoothness

Active Publication Date: 2014-02-12
重庆长安新能源汽车科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a zero-pedal torque control method for a pure electric vehicle, to solve the problem of the pure electric vehicle slipping in the zero-pedal torque mode, and to improve driving comfort and driving comfort

Method used

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  • Zero pedal torque control method of purely-power-driven vehicle

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Embodiment Construction

[0028] Below in conjunction with accompanying drawing and embodiment the present invention will be further elaborated:

[0029] Such as figure 1 , figure 2 The shown zero-pedal torque control method for pure electric vehicles includes the following steps:

[0030] (A) In the zero-pedal state of the vehicle, it is divided into anti-slip mode and creeping mode according to the judgment rules. The zero-pedal state means that the pure electric vehicle is powered on successfully, the driver is engaged in forward gear or reverse gear, and the accelerator pedal and brake The situation where none of the pedals are depressed. The judgment rules are:

[0031] Anti-slip mode (identified by the slope flag 1): the motor speed is less than 0 in forward gear, or the motor speed is greater than 0 in reverse gear, the forward direction of the motor is a positive value, and the reverse is a negative value;

[0032] Creeping mode (identified by the slope flag bit 0): the motor speed is grea...

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Abstract

The invention discloses a zero pedal torque control method of a purely-power-driven vehicle. According to the control method, the state of a vehicle zero pedal is divided into a slide-prevention mode and a worming mode. Under the slide-prevention mode or the worming mode, torque is output according to an operation state of the vehicle and all the output torque undergoes filtering. According to the zero pedal torque control method of the purely-power-driven vehicle, the problems of sliding or vibration of the purely-power-driven vehicle under the zero pedal torque mode are solved and running smoothness and driving comfort are improved.

Description

technical field [0001] The invention relates to the field of power control of a pure electric vehicle, in particular to a zero pedal torque control method of a pure electric vehicle. Background technique [0002] With the increasing awareness of energy conservation and environmental protection, pure electric vehicles have become an important trend in the development of the automotive industry. Pure electric drive vehicles can achieve low energy consumption and ideal "zero emission", which has advantages that internal combustion engine vehicles cannot match. [0003] Pure electric vehicles are driven by motors, which are different from the working mechanism of traditional vehicles driven by engines. Because the motors output constant torque at low speeds, pure electric vehicles have good acceleration performance at low speeds. Since the car is often in low-speed driving conditions when driving on urban roads, in order to reduce the driver's operating burden and improve the s...

Claims

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Application Information

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IPC IPC(8): B60W30/182B60W10/08
CPCB60L15/20B60L2240/423
Inventor 胡振伟严钦山
Owner 重庆长安新能源汽车科技有限公司
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