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Parameter optimization method of in-wheel vibration reduction system of electric wheels

A technology of vibration reduction system and optimization method, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as affecting the working performance of motors

Active Publication Date: 2018-05-01
JILIN UNIV
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Problems solved by technology

Although the root mean square value of the vertical impact force of the motor is significantly optimized from the perspective of the entire frequency range, the large amplitude ratio at the natural frequency of the motor may seriously affect the performance of the motor, and appropriate measures must be taken to weaken this "peak"

Method used

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  • Parameter optimization method of in-wheel vibration reduction system of electric wheels
  • Parameter optimization method of in-wheel vibration reduction system of electric wheels
  • Parameter optimization method of in-wheel vibration reduction system of electric wheels

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Embodiment Construction

[0090] 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.

[0091] The present invention provides a parameter optimization method for the internal vibration reduction system of an electric wheel, including:

[0092] Such as figure 1 As shown in the two-dimensional schematic diagram, set up as figure 2 The vibration model of the three-degree-of-freedom 1 / 4 vibration-damping electric wheel vehicle is shown, and the dynamic differential equation for the 1 / 4 vibration-damping electric wheel is established as:

[0093]

[0094]

[0095]

[0096] Such as image 3 As shown, for the original electric wheel vehicle, a 1 / 4 electric wheel vehicle two-degree-of-freedom linear vibration model is established as follows:

[0097]

[0098]

[0099] Among them, m s is 1 / 4 body mass, m t is the wheel mass, m e is the mass of the h...

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Abstract

The invention discloses a parameter optimization method of an in-wheel vibration reduction system of electric wheels. The method includes the following steps: step 1, establishing a linear three-degree-of-freedom vibration model of 1 / 4 of a vibration-damping-type electric-wheel vehicle with the in-wheel vibration reduction system, and a linear two-degree-of-freedom vibration model of 1 / 4 of an original electric-wheel vehicle without the in-wheel vibration reduction system; step 2, establishing objective evaluation functions; and step 3, establishing constraint conditions, and finding an optimal objective function. According to the parameter optimization method of the in-wheel vibration reduction system of the electric wheels of the invention, time-domain and frequency-domain cooperative-optimization can be carried out, matching of vibration-reduction-spring stiffness and damper damping coefficients can be optimized, thus impacts of road surface excitation on wheel hub motors and vertical vibration of vehicle wheels and a vehicle body can be reduced, and vehicle ride performance and safety can be improved.

Description

technical field [0001] The invention relates to the field of parameter optimization of a vehicle in-wheel vibration damping system, and more specifically, the invention relates to a parameter optimization method of an electric wheel in-wheel vibration damping system. Background technique [0002] The vibration damping system, such as damping springs and damping shock absorbers, is an important part of reducing the vertical vibration of various systems of the vehicle and improving the ride comfort of the vehicle. Vibration, thereby ensuring the ride comfort and safety of the vehicle, while improving the service life of important components. For electric wheel vehicles, the introduction of the hub motor drive system increases the unsprung mass of the vehicle, resulting in a series of negative effects such as reduced vehicle ride comfort, poor road friendliness, and increased vertical vibration of the hub motor. These problems are extremely serious. This restricts the developm...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F2119/04G06F2119/06
Inventor 陈书明谷飞鸿戢杨杰张喆
Owner JILIN UNIV
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