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Electric vehicle starting jitter suppression method and device

A technology for vibration suppression and electric vehicles, applied in electric vehicles, control devices, vehicle components, etc., to ensure the power of the whole vehicle

Active Publication Date: 2022-01-04
ZHENGZHOU YUTONG BUS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method and device for suppressing starting jitter of an electric vehicle, so as to solve the problem that the methods for suppressing starting jitter of an electric vehicle in the prior art have obvious limitations

Method used

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  • Electric vehicle starting jitter suppression method and device
  • Electric vehicle starting jitter suppression method and device
  • Electric vehicle starting jitter suppression method and device

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Experimental program
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Embodiment Construction

[0031] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0032] Method embodiment provided by the invention:

[0033] Such as figure 1 Shown is the flow chart of the method for suppressing the starting vibration of the electric vehicle of the present invention, and the specific steps are as follows:

[0034] 1. Determine the natural frequency of the powertrain mount system around the torque axis, so as to determine the natural period of the powertrain mount system around the torque axis.

[0035] In this embodiment, the design of the powertrain mount system is carried out first, so as to determine the natural frequency of the powertrain mount system around the torque axis, and obtain the natural period of the powertrain mount system around the torque axis.

[0036] Test parameters such as the moment of inertia and the position of the center of mass of the powertrain mount system through a three-...

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Abstract

The invention relates to an electric vehicle starting jitter suppression method and device, and belongs to the field of automobile noise suppression. According to the method, firstly, the inherent frequency of the power assembly suspension system in the electric vehicle around a torque shaft is determined, so that the inherent period of the power assembly suspension system in the electric vehicle around the torque shaft is determined, then the ratio of the torque stabilization time corresponding to the minimum dynamic load coefficient to the inherent period is selected according to the motor impact response spectrum characteristics, the torque stabilization time is calibrated according to the ratio and the accelerator opening percentage, vehicle starting control is conducted according to the torque stabilization time obtained through calibration, and therefore the dynamic performance and the jitter rejection performance of the whole vehicle can be optimal.

Description

technical field [0001] The invention relates to a method and device for suppressing starting vibration of an electric vehicle, belonging to the field of automobile noise suppression. Background technique [0002] With the development of society, people's awareness of environmental protection is gradually increasing, and the electric vehicle market is becoming more and more popular. However, due to the large torque and fast response at the moment of starting, electric vehicles are more prone to motor vibration and cause problems such as drive system crashes. [0003] At present, for the problems of starting vibration and rattle of electric vehicles, the conventional solution is to increase the modal frequency of the powertrain around the axis or change the throttle response characteristics to reduce the throttle response speed. Increasing the modal frequency of the powertrain around the axial direction can be achieved by improving the impact resistance of the suspension syst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20
CPCB60L15/20B60L2240/42Y02T10/72
Inventor 刘斌谢富科
Owner ZHENGZHOU YUTONG BUS CO LTD
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