Six degrees of freedom vibration acceleration measurement device

Abstract

The invention relates to a six degrees of freedom vibration acceleration measurement device, used for measurement of multidimensional vibration quantity in the complex vibration environment and structural multidimensional vibration analysis. The device has an integrated space adapter, four three-dimensional acceleration sensors and a counterweight. The four three-dimensional acceleration sensors are installed on a vertical branch bream and three horizontal branch beams of the space adapter respectively, wherein the rear part extension end of one horizontal branch beam is provided with the counterweight, so as to adjust the geometric symmetry of the measurement device relative to a vertical central axis, and the lower end of the vertical branch bream is fixed on a pedestal. The six degrees of freedom vibration acceleration measurement device designed by the invention has many advantages such as wide measuring frequency range, light weight, convenient installation and high precision, and has wide application prospect in engineering.

Description

technical field [0001] The invention relates to a vibration acceleration measuring device, in particular to a vibration acceleration measuring device with six degrees of freedom. Background technique [0002] At this stage, the vibration environment tests of electromechanical products and large-scale equipment in my country adopt one-dimensional vibration mode. However, some military equipment that has passed the one-dimensional vibration test according to the standard will still fail in the multi-dimensional and complex vibration environment in the field or in service. In fact, the operating environment of the equipment often contains multi-dimensional vibration components. Only the multi-axis vibration test system can more effectively simulate the real dynamic environment of the equipment, and expose the defects and hidden dangers that are not easy to be found in the uniaxial excitation vibration mode. Since the 1990s, domestic and foreign countries have begun to notice t...

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Problems solved by technology

[0003] At present, there is no ready-made general-purpose device that can measure angular acceleration parameters. If an angular displacement sensor is used for measurement, there will be problems such as large volume, difficult installation, and limited frequency range. Moreover, the angular acceleration is calculated by twice differentiating the angular displacement Inevitably there will be calculation errors

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