Real-time measuring method of object vibration displacement in inertia space

Abstract

The invention discloses a real-time measuring method of an object vibration displacement in an inertia space. A smooth rod and a slide block are placed on an object to be measured, the smooth rod is fixed on the object, the slide block sleeves the smooth rod, through applying an external force to the slide block, the slide block is enabled to be at a force balance state in terms of an external force borne in the direction of the smooth rod, its own gravity and frictional resistance, and the slide block sleeves the smooth rod in a suspending mode by maintaining its absolute position basically unchanged; and in case that the object vibrates, through measuring the relative displacement between the smooth rod and the slide block, real-time measurement of the object vibration displacement in the inertia space is realized. The real-time measuring method of the object vibration displacement in the inertia space reflects the vibration displacement of the object ingeniously through the relative displacement between the smooth rod and the slide block, and has the advantages of simple and reliable structure, quite high measuring precision and rapid and direct reflection of vibration displacement data.

Description

technical field [0001] The invention relates to the technical field of object vibration displacement measurement in inertial space, in particular to a real-time measurement method for object vibration displacement in inertial space. Background technique [0002] At present, there are two main methods for measuring the displacement of objects vibrating in inertial space in the prior art: 1. Secondary integration based on the acceleration sensor whose initial condition is zero: S=at 2 / 2(S: Displacement, a: Acceleration, t: Time) to get the displacement; 2. Multi-sensor fusion technology, such as multiple sensors to measure together or use the installation position of the sensor to establish a corresponding relationship for measurement. [0003] However, the applicant found that the first method based on the second integration of the acceleration sensor to obtain the displacement has drift caused by noise, which can only work for a short time, but cannot run continuously for a...

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Problems solved by technology

[0003] However, the applicant found that the first method based on the second integration of the acceleration sensor to obtain the displacement has drift caused by noise, which can only work for a short time, but cannot run continuously for a long time, and the filtering method will introduce problems such as phase deviation. ; The disadvantage of the second multi-sensor fusion technology is that the multi-sensor cost is high, and it still cannot effectively remove the drift

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