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Vehicle braking nose dive restraining method

A vehicle braking and suppressor technology, which is applied to vehicle components, elastic suspensions, instruments, etc., can solve the problem of unable to suppress vehicle braking nodding, and achieve the effect of suppressing body braking nodding and improving vehicle ride comfort.

Active Publication Date: 2018-06-01
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing vehicle ride comfort control method cannot suppress the vehicle braking nod, the present invention proposes a vehicle braking nod suppressing method

Method used

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  • Vehicle braking nose dive restraining method
  • Vehicle braking nose dive restraining method
  • Vehicle braking nose dive restraining method

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Experimental program
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Embodiment

[0045] Embodiment: combine below Figure 1 to Figure 5 This embodiment will be described in detail.

[0046] Such as figure 1 As shown, the vehicle braking nodding suppression method described in this embodiment includes:

[0047] Step 1. In the process of vehicle braking, a vehicle body pitch dynamic model is established according to the vehicle body pitch physical model;

[0048] Step 2, designing the vehicle brake nodding suppressor according to the vehicle body pitching dynamics model;

[0049] Step 3. Simultaneously adjust the front active suspension control input force and the rear active suspension control input force of the vehicle through the vehicle brake nod suppressor, thereby suppressing the vehicle brake nod.

[0050] figure 2 It is the body pitch physical model diagram in the vehicle braking process, and the present embodiment obtains the following body pitch dynamic model through the body pitch physical model:

[0051]

[0052] In formula group (1), m ...

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Abstract

The invention discloses a vehicle braking nose dive restraining method, belongs to the field of nonlinear control of vehicles, and solves the problem that an existing vehicle smoothness control methodcannot restrain braking nose dive of the vehicles. The vehicle braking nose dive restraining method includes the steps: building a body pitching dynamics model according to a body pitching physical model in the braking process of a vehicle; designing a vehicle braking nose dive restraining device according to the body pitching dynamics model; simultaneously adjusting front active suspension control input force and rear active suspension control input force of the vehicle by the vehicle braking nose dive restraining device; restraining braking nose dive of the vehicle. A body pitching angle can be controlled by the vehicle braking nose dive restraining device designed by the vehicle braking nose dive restraining method in the braking process of the vehicle, so that vehicle braking nose dive is restrained. The vehicle braking nose dive restraining method is applicable to braking nose dive of the vehicle.

Description

technical field [0001] The invention relates to a vehicle control method and belongs to the field of vehicle nonlinear control. Background technique [0002] During the braking process, the vehicle will inevitably have different degrees of nodding phenomenon, and the severity of this phenomenon will increase with the increase of vehicle braking deceleration, which seriously reduces the ride comfort of the vehicle, and then affects the vehicle interior. People's ride experience. [0003] The main content of the existing vehicle ride comfort control method is as follows: first establish a quarter suspension model, then design a quarter suspension controller according to the quarter suspension model, and finally control the ride through the quarter suspension The controller controls the vehicle suspension system to reduce the vertical acceleration of the vehicle body, thereby improving the ride comfort of the vehicle. However, this method cannot suppress the braking nod of th...

Claims

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Application Information

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IPC IPC(8): B60G17/016G06F17/50
CPCB60G17/0164B60G2600/07B60G2600/18G06F30/15G06F2119/06
Inventor 孙维超张晋华
Owner HARBIN INST OF TECH
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