Five-freedom-degree automobile seat vibration test table

Abstract

The invention belongs to the technical field of automobile testing, and particularly relates to a five-freedom-degree automobile seat vibration test table capable of carrying out automobile seat smoothness tests and comfort subjective and objective evaluation tests. The test table comprises a machine body part A, a control system B and an upper computer C, wherein the control system B is connected with the machine body part A, the upper computer C is connected with the control system B, the machine body part A comprises a clamp module, a motive power module and a bottom support module, the motive power module is arranged under the clamp module, and the bottom support module is arranged under the motive power module. The five-freedom-degree automobile seat vibration test table provided by the invention is obviously superior to the existing single-freedom-degree seat test table in the aspects of precision, structure, installation, maintenance, environment pollution, noise and performance testing, the limitation of hydraulic motive power sources is overcome, in addition, the test table can be used for carrying out smoothness tests and comfort subjective and objective evaluation tests on an automobile seat, and the development time of the automobile seat is shortened.

Description

technical field [0001] The invention belongs to the technical field of automobile testing, and in particular relates to a five-degree-of-freedom automobile seat vibration test bench capable of carrying out ride comfort tests and comfort subjective and objective evaluation tests of automobile seats. Background technique [0002] The multi-degree-of-freedom vibration test of car seats plays an important role in the development process of car seats. In the prior art, the single-degree-of-freedom vibration test bench for car seats uses hydraulic cylinders as the power source, and there are many inherent defects in the hydraulic drive mode: hydraulic system The seal is prone to leakage, and the hydraulic oil is easy to pollute the environment; the hydraulic oil is easily polluted and needs to be replaced regularly, and the maintenance cost is high; the hydraulic pump is noisy when it works; the position control accuracy is not high, and expensive positioning sensors and precise po...

AI Technical Summary

Problems solved by technology

[0002] The multi-degree-of-freedom vibration test of car seats plays an important role in the development process of car seats. In the prior art, the single-degree-of-freedom vibration test bench for car seats uses hydraulic cylinders as the power source, and there are many inherent defects in the hydraulic drive mode: hydraulic system The seal is prone to leakage, and the hydraulic oil is easy to pollute the environment; the hydraulic oil is easily polluted and needs to be replaced regularly, and the maintenance cost is high; the hydraulic pump is noisy when it works; the position control accuracy is not high, and expensive positioning sensors and precise positioning sensors are required to improve the accuracy. Electro-hydraulic valves with motion creep, hysteresis, dead zones, pressure and temperature variations complicate control

These defects make the single-degree-of-freedom seat test bench complex in structure, narrow in scope of application, low in precision, and expensive. It is impossible to simply expand the number of degrees of freedom of the test bench, and thus it is impossible to perform subjective and objective evaluation vibration tests on the test seat with multiple degrees of freedom.

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