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A kind of rotational inertia measuring device and measuring method for collision dummy

A technology of moment of inertia and measuring equipment, which is applied in the direction of measuring devices, torque measurement, and vehicle testing, etc., can solve the problems that the safety and stability of the measurement process cannot be guaranteed, and achieve improved safety and stability and compact equipment structure Effect

Active Publication Date: 2022-06-17
CHINA AUTOMOTIVE TECH & RES CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing moment of inertia measurement equipment used in other fields needs to completely rotate the product by two 90° for measurement. When measuring larger parts, this method cannot guarantee the safety and stability of the measurement process, and at the same time It also increases the complexity of equipment assembly and disassembly

Method used

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  • A kind of rotational inertia measuring device and measuring method for collision dummy
  • A kind of rotational inertia measuring device and measuring method for collision dummy
  • A kind of rotational inertia measuring device and measuring method for collision dummy

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Embodiment 1

[0045] see Figure 1-Figure 3 , this embodiment provides a moment of inertia measurement device for a collision dummy, including a base 31, a turntable system, a torsional period acquisition system and a torsional motion system, the turntable system is arranged above the base 31, the torsion The period acquisition system and the torsion motion system are both arranged below the base 31 , the turntable system, the torsion period acquisition system and the torsion motion system are connected in sequence, and the turntable system is also connected to the torsion motion system .

[0046] In a preferred embodiment, the torsion motion system includes a lift control motor 1, a torsion control motor 2, a lift module 30, a torsion shaft 9, a first torsion clutch mechanism 4 and a second torsion clutch mechanism 5;

[0047] The lift control motor 1, the lift module 30, the torsion control motor 2 and the first torsion clutch mechanism 4 are connected in sequence, the second torsion clu...

Embodiment 2

[0071] like Figure 4 As mentioned above, the present embodiment provides a method for measuring the moment of inertia. The method adopts the moment of inertia measuring device used for the collision dummy in Embodiment 1 to measure, including the following steps:

[0072] S110. When measuring the no-load of the measuring device, set the torsion angle and the torsion period T under the set rotation angle 0 .

[0073] Among them, the above-mentioned no-load refers to the situation where the product to be tested is not installed on the tooling mounting plate. The set yaw angle refers to the rotation angle of the torsion axis. The set rotation angle refers to the angle between each axis in the coordinate system of the tooling mounting plate and the axial direction of the torsion axis.

[0074] Optionally, as Figure 5 As shown, the coordinate system of the tooling mounting plate takes the center of the tooling mounting plate as the origin (when the tooling mounting plate is c...

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Abstract

The invention relates to the field of moment of inertia measurement, in particular to a moment of inertia measuring device and method for a collision dummy. The moment of inertia measuring equipment includes a base, a turntable system, a torsion cycle acquisition system and a torsion motion system, the turntable system is arranged above the base, and the torsion cycle acquisition system and the torsion motion system are both arranged on the Below the base, the turntable system, the torsion cycle acquisition system and the torsion motion system are sequentially connected, and the turntable system is also connected to the torsion motion system. The device and method can measure the moment of inertia under the condition of rotating multiple small angles, thereby improving the safety and stability of the measurement process.

Description

technical field [0001] The invention relates to the field of moment of inertia measurement, in particular to a moment of inertia measurement device and a measurement method for a collision dummy. Background technique [0002] With the increasing number of automobiles in our country year by year, traffic accidents have also increased sharply. Automotive passive safety testing technology is an important test method to verify the vehicle occupant protection system. Crash test dummy is a necessary measurement device in automotive passive safety testing. The measured values ​​reflected by the crash dummy can be used to design the vehicle occupant restraint system. accurate evaluation of the rationality. [0003] After the crash test dummy has been tested for many times, the damage and dislocation of the parts during the impact process will affect the inertial parameters of the crash test dummy itself, and the existing crash dummy calibration technology will not rotate it. Inert...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M1/10G01M17/007
CPCG01M1/10G01M17/0078G01L3/00G01L3/08G01M17/007
Inventor 刘志新王凯马伟杰刘伟东解明浩郝烨乔胜华
Owner CHINA AUTOMOTIVE TECH & RES CENT