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Method and device for suppressing brake chatter based on operating conditions

A braking device and operating condition technology, applied to control devices, transportation and packaging, brakes, etc., can solve problems such as large amount of calculation and unpredictable calculation results, and achieve fast response speed, good chatter suppression effect, and structural simple effect

Active Publication Date: 2022-04-29
DONGFENG MOTOR CORP HUBEI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this prior art discloses that the coefficient of friction is related to the braking pressure, in this prior art, a finite element model is used to output the corresponding coefficient of friction according to the input braking pressure. expected

Method used

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  • Method and device for suppressing brake chatter based on operating conditions
  • Method and device for suppressing brake chatter based on operating conditions
  • Method and device for suppressing brake chatter based on operating conditions

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Embodiment Construction

[0044] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0045] The braking system of the vehicle includes wheels, braking devices, acceleration sensors, pressure sensors, hydraulic oil pipes, two-way oil pumps, hydraulic valves, main control unit and auxiliary control unit, etc. For different braking methods, the braking device specifically includes different: drum brakes mainly include brake shoes, friction plates, brake drums and actuators; disc brakes mainly include brake calipers, brake discs, Brake backplates and friction linings. When the sensor detects chatter during the braking process, the two-way oil pump works and acts according to the joint decision-making of the main and auxiliary control units, so that the brake pressure is at the optimum value and the brake chatter is suppressed.

[0046] see figure 1 , a brake judder suppression device caused by dry friction based on oper...

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Abstract

The present invention provides a method and device for suppressing brake chatter based on operating conditions. Aiming at problems such as abnormal noise and steering wheel shake caused by automobile brake chatter, the chatter that occurs during the braking process is monitored by a sensor according to the main The joint decision-making action of the sub-control unit keeps the brake pressure at the optimum value, thereby suppressing the brake chatter, and realizes the improvement of the response speed and suppression effect of the brake chatter suppression without changing the existing brake device. Function. The invention has a fast response speed, effectively suppresses the generation of chaos, and has a very good chatter suppression effect. The invention can be pre-installed and refitted, has high selectivity, simple structure and low cost. The invention can be used in various braking devices, and can be extended to all mechanical products using dry friction braking, and has a wide range of applications.

Description

technical field [0001] The invention belongs to the technical field of vehicle braking, and in particular relates to a braking flutter suppression method and device based on operating conditions. Background technique [0002] As my country's comprehensive national strength continues to increase, the economic model needs to be transformed, and it is necessary to shift from extensive production to refined production, which means that our requirements for product quality are getting higher and higher. In the mechanical industry, as far as automobiles are concerned, the smaller the braking vibration, the higher the comfort experienced by the drivers and passengers, and the braking chatter is an unresolved problem in the automotive industry. At present, most of the braking devices equipped on vehicles use dry friction braking, and dry friction has obvious nonlinear characteristics, which will lead to braking chatter under some working conditions. Brake chatter will not only redu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W30/18B60W50/00B60T8/34B60T8/58
CPCB60W30/18109B60W50/00B60T8/58B60T8/344B60W2050/0037B60W2050/0019B60W2900/00
Inventor 宋军伟
Owner DONGFENG MOTOR CORP HUBEI
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