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Iterative decomposition method for automobile interior noise development objective

A technology for interior noise and automobiles, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as large design changes, design changes, and constraints that are not considered in the later stage, so as to avoid uncertainty , solve the effect of difficult decomposition and high decomposition efficiency

Active Publication Date: 2015-12-09
HEFEI CHANGAN AUTOMOBILE
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Problems solved by technology

[0003] The traditional decomposition method of interior noise development targets mainly adopts the benchmark-based analogy decomposition method, that is, the design indicators of each subsystem of the new model are set by analogy with the vibration and noise performance indicators of each subsystem of the benchmark model. This decomposition method decomposes The obtained subsystem design index is not directly related to the vehicle interior noise target, and does not take into account the constraints of the engineering realization of each subsystem. There are problems of inaccurate decomposition and large design changes in the later stage, that is, even if each subsystem The realization of all design indicators cannot ensure the realization of the vehicle target, resulting in a large number of design changes in the later stage of product development, and even the serious consequences of not being able to finally achieve product performance due to development time and cost issues

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  • Iterative decomposition method for automobile interior noise development objective

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[0027] The present invention is further described below in conjunction with accompanying drawing:

[0028] see figure 1 , the iterative decomposition method of automobile interior noise development target of the present invention, its steps are as follows:

[0029] (1) Set the iterative initial value T of the vibration and noise performance design index of each subsystem of the automobile i , the initial value of the iteration is determined according to the actual development situation. For a system that cannot be changed during the development process, the initial value of the iteration is set to the actual test value of the system; for the system to be developed, the initial value of the iteration is set to the empirical value of the system performance index or mean.

[0030] Specifically, the iterative initial value T i Include Incentive F i and path H i Two aspects, F i 、H i Both are subsystem design indicators, where F i Dynamic force at the excitation point for s...

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Abstract

The invention provides a method for decomposing an automobile interior noise development objective into subsystem design indexes. According to the method, the subsystem design indexes are continuously adjusted to approach a complete vehicle development objective by utilizing a transfer path analysis synthesis algorithm through step-by-step iteration, and in the process, engineering actual constraints are taken into account, so that accurate conversion from the complete vehicle development objective to the subsystem design indexes is achieved. The method is simple, the objective decomposition efficiency of automobile interior noise is higher, the uncertainty relying on personal experience is avoided, and the problem that an objective is difficult to decompose in the initial stage of automobile development is better solved.

Description

technical field [0001] The invention belongs to the vehicle vibration and noise control technology, and in particular relates to a method for reasonably decomposing the vehicle interior noise development target into the design indexes of each subsystem in the early stage of vehicle development. Background technique [0002] The noise inside the car is an important aspect that affects the comfort of the car, and has become one of the important indicators to evaluate the comfort of the car. The overall performance of the noise inside the car is closely related to the subsystems that make up the car. Only the subsystems, such as The vehicle body, engine, suspension system, air intake system, exhaust system, transmission system, acoustic packaging, chassis system, etc. must all meet a reasonable vibration and noise performance index, and the development goal of vehicle interior noise can be achieved. For this reason, how to reasonably decompose the vehicle interior noise develop...

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Application Information

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IPC IPC(8): G06F19/00
Inventor 李传兵杨亮胡成太徐小敏
Owner HEFEI CHANGAN AUTOMOBILE
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