Test board of automobile shock damper and steel plate spring, compatibility test system and method thereof

Abstract

The invention brings forward a test board of an automobile shock damper and a steel plate spring, a compatibility test system and a method thereof. The compatibility test system comprises the test board, a road condition analog control apparatus and a coherence analysis apparatus. The road condition analog control apparatus is used for controlling the motion of a driving oil cylinder in the test board according to a prestored road load spectrum. The coherence analysis apparatus is used for receiving an acceleration signal of the shock damper sensed by a first sensor and an acceleration signal of the steel plate spring sensed by a second sensor in the test board, carrying out coherence analysis on the acceleration signal of the steel plate spring and the acceleration signal of the shock damper, and determining that the shock damper and the steel plate spring are compatible when a result of the coherence analysis is less than a preset threshold. According to the test board, the system and the method of the invention, utilizing an empirical formula for calculation can be avoided, and raising accuracy is facilitated.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a test bench for an automobile shock absorber and a leaf spring, a matching test system and a method. Background technique [0002] The automobile shock absorber is one of the important components of the automobile suspension system. Its function is to dissipate the vertical movement energy between the body and the wheels, and avoid the resonance of the automobile. The suspension system widely used in automobiles is composed of leaf springs, hydraulic shock absorbers and force transmission guide devices. The performance matching of automobile leaf springs and shock absorbers directly affects the life of leaf springs and shock absorbers, and the comfort of the cab. Seeking the shock absorber that best matches the performance of the leaf spring can effectively improve the life of the suspension and ride comfort. Therefore, higher requirements are put forward for the matching r...

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Problems solved by technology

[0003] The existing related matching methods are all calculated by empirical formulas. The disadvantage of this matching method is that it cannot solve the unpredictable failure modes in actual situations, such as: shock absorbers or leaf springs and their parts cannot reach the expected service life , a certain component is easily damaged, etc. These problems are common problems in the development process of vehicle suspension systems

In addition, the selection process of the shock absorber through empirical formula calculation is more complicated and lacks experimental basis, so it is difficult to guarantee its matching performance

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