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Calibration device and method for rotational inertia

A technology for moment of inertia and calibration devices, which is applied in measuring devices, static/dynamic balance testing, instruments, etc., can solve the problems that the value of moment of inertia cannot be traced back, it is difficult to achieve high-accuracy measurement, and achieve the effect of shortening the measurement time

Inactive Publication Date: 2019-04-02
BEIJING AEROSPACE INST FOR METROLOGY & MEASUREMENT TECH +1
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a "rotational inertia error amplification method" based on the rotational inertia parallel axis theorem. This method can trace the rotational inertia reference value to the length and quality, and standardize The accuracy is increased to 0.01%, thus overcoming the shortcomings that the value of the moment of inertia cannot be traced and it is difficult to achieve high-accuracy measurement

Method used

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  • Calibration device and method for rotational inertia
  • Calibration device and method for rotational inertia
  • Calibration device and method for rotational inertia

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Embodiment Construction

[0035] A moment of inertia calibration device, comprising a positioning plate 2 of a standard part of the moment of inertia, the center of the positioning plate 2 of the standard part of the moment of inertia is a positioning hole 3 of the center of rotation, and the positioning plate 2 of the standard part of the moment of inertia is horizontal around a rotation axis passing through the positioning hole 3 of the center of rotation. Rotation, the moment of inertia standard parts 1 are placed on the left and right ends of the moment of inertia standard part positioning plate 2 respectively, and there are standard parts positioning holes 4 for positioning the moment of inertia standard part 1 on the standard moment of inertia positioning plate 2,

[0036] A method for calibrating moment of inertia, comprising the following steps:

[0037] S1: In the case of not placing the moment of inertia standard part 1, load the moment of inertia calibration device on the air flotation table,...

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Abstract

The invention discloses a calibration device and a method for rotational inertia. The device comprises a positioning plate for rotational inertia standard components, the center of the positioning plate for the rotational inertia standard component is a rotary central positioning hole, the positioning plate for the rotational inertia standard component rotated horizontally around a rotation axis penetrated through the rotary central positioning hole, rotational inertia standard components are placed on the left end and the right end of the positioning plate for the rotational inertia standardcomponent respectively, and there are standard component positioning holes used for positioning the rotational inertia standard component formed on positioning plate for the rotational inertia standard component.

Description

technical field [0001] The invention belongs to the field of calibration devices, and in particular relates to a rotational inertia calibration device and method. Background technique [0002] Moment of Inertia is a measure of the inertia of a rigid body when it rotates, and its magnitude depends on the object's shape, mass distribution, and the position of its axis of rotation. The moment of inertia of a rigid body has important physical significance, and is also an important parameter in scientific experiments, engineering technology, aerospace, electric power, machinery, instrumentation and other industrial fields. The indicating system of the electromagnetic instrument can be used to measure the tiny current (galvanometer) or electricity (impulse galvanometer) due to the different moment of inertia of the coil. In the shape design of engine blades, flywheels, gyroscopes and artificial satellites, it is very necessary to accurately determine the moment of inertia. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M1/10
CPCG01M1/10
Inventor 闫磊孙凤举王小三高炳涛钟山
Owner BEIJING AEROSPACE INST FOR METROLOGY & MEASUREMENT TECH
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