CN201909793U - Test board of five-position line accelerometer - Google Patents

Abstract

The utility model discloses a test board of a five-position line accelerometer, belonging to the technical field of the measurement of acceleration. The test board comprises a flat plate and a support frame, wherein the support frame is formed by two cushion blocks and a support block, one ends of the two cushion blocks are fixedly connected with each other, the other ends of the two cushion blocks are fixed with each other by the support block, the inclined angle between the two cushion blocks is 15 degrees, and one cushion block is detachably connected with the flat plate. The test board has the advantages that: the test board is low in cost, high in efficiency and convenient in operation; the zero position and the proportion coefficient of a three-axes accelerometer can be calibrated, and the calibrating error can be less than or equal to 5*10<4>g; and the test times can be simplified, and the labor cost can be saved.

Description

A kind of five position line accelerometers test platform

Technical field

The utility model relates to a kind of test board, relates in particular to a kind of five position line accelerometers test platform.

Background technology

Linear accelerometer is as one of inertia device, and it is one of important devices that constitutes various inertial navigation systems.And, require the motion of diagonal motion and line to have measurement more accurately along with the navigation and the development of control technology.For this reason, numerous scientific workers have researched and developed the linear accelerometer of used for various applications, to satisfy the requirement of navigation and control technology development.Traditional, the most the most frequently used measuring method is the 8 positions mensuration at present.Though the 8 positions mensuration has solved the test of linear accelerometer zero-bit and scale-up factor preferably, this method of testing must have accurate dividing head.The precision of dividing head is high more, and the accuracy of measurement of linear accelerometer scale-up factor is high more, and digital precise grating optical dividing head equipment price general charged is low more than 100,000 yuan.Also be a no small expense concerning enterprise, and increased production cost.

The utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art part, five position line accelerometers test platform that provides a kind of equipment that needs simple cheap promptly to can be assembled into.

To achieve these goals, the technical solution adopted in the utility model is such: a kind of five position line accelerometers test platform, comprise flat board and support, described support is made up of two cushion blocks and a back-up block, wherein, an end of two cushion blocks is fixedly connected, and the other end is fixed by back-up block, and the angle between two cushion blocks is 15 °, and wherein cushion block and flat board removably connect.

As preferably, the precision of described flat board is at least 0 grade.

As preferably, described cushion block is that error is less than positive and negative 30 " the 45# steel.

Compared with prior art, advantage of the present utility model is: low cost, high-level efficiency, easy and simple to handle, equipment needed thereby only about 0.5 ten thousand yuan of need are promptly available; Can demarcate zero-bit, the scale-up factor of three axis accelerometer meters, calibrated error can≤5 * 10 ^-4G; Simplify the measurement number of times, saved cost of labor.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the utility model position structural representation for the moment;

Structural representation when Fig. 3 is the utility model position two;

Structural representation when Fig. 4 is the utility model position three;

Structural representation when Fig. 5 is the utility model position four;

Structural representation when Fig. 6 is the utility model position five.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, a kind of five position line accelerometers test platform, comprise flat board 1 and support 2, described support 2 is made up of two cushion blocks and a back-up block, wherein, an end of two cushion blocks is fixedly connected, and the other end is fixed by back-up block, and the angle between two cushion blocks is 15 °, and wherein a cushion block removably connects with dull and stereotyped 1.Described dull and stereotyped 1 precision is at least 0 grade.Described cushion block is that error is less than positive and negative 30 " the 45# steel.

Concrete measuring method of the present utility model is as follows:

(1) dull and stereotyped 1 horizontal positioned is good, and use the frame level leveling; Tested device is placed on dull and stereotyped 1 by reference field, is position one, test A _{X (0)}A _{Y (0)}A _{Z (0)}

(2) X-axis is filled up with support 2 along its positive axis, tilt 15 °, be position two, test A _{Y (X15)}, X-axis is filled up with support 2 along its negative semiaxis, tilt 15 °, be position three, test A _{Y (X-15)}

(3) Y-axis is filled up with support 2 along its positive axis, tilt 15 °, be position four, test A _{X (X15)}, A _{Z (Y15)}Y-axis is filled up with support 2 along its negative semiaxis, tilt 15 °, be position five, test A _{X (Y-15)}, A _{Z (Y-15)}

(4) after test finishes by formula (I), (II), (III), (IV), (V), (VI) formula calculate, can draw scale-up factor, the zero-bit (position) of three each axis accelerometer meter of axis accelerometer meter.

$A_{\mathrm{XO}}=\frac{A_{X\left(Y15\right)}+A_{X(Y-15)}}{2}---\left(I\right)$

$K_X=\frac{A_{X\left(Y15\right)}-A_{X(Y-15)}}{2}---\left(\mathrm{II}\right)$

$A_{\mathrm{<figure-callout\; id="0"\; label="Y"\; filenames="HSA00000369825600012.png,HSA00000369825600022.png"\; state="\{\{state\}\}">Y</figure-callout>}0}=\frac{A_{Y\left(X15\right)}+A_{Y(X-15)}}{2}---\left(\mathrm{III}\right)$

$K_Y=\frac{A_{Y\left(X15\right)}-A_{Y(X-15)}}{2}---\left(\mathrm{IV}\right)$

$A_{\mathrm{ZO}}=\frac{A_{z\left(Y15\right)}-A_{Z\left(0\right)}\cos {15}^{\&prime;\&prime;}}{1-\cos {15}^{\&prime;\&prime;}}---\left(V\right)$

K _Z＝A _Z(0)-A _ZC (VI)

A _{Z (0)}The output of Z accelerometer during for the utility model horizontal positioned.

A _{X (Y15)}, A _{X (Y-15)}, A _{Y (X15)}, A _{Y (X-15)}, A _{Z (Y15)}Be respectively X-axis, the Y-axis X positive and negative 15 ° time that tilts, Y, the output of z axis accelerometer.

The above only is the detailed description of the utility model preferred embodiment and graphic, is not to be used for limiting the utility model, and the embodiment or the approximate construction of all similar variations of doing according to creation spirit of the present utility model all should be contained among the utility model.

Claims (3)

1. a position line accelerometer is tested platform, it is characterized in that: comprise flat board (1) and support (2), described support (2) is made up of two cushion blocks and a back-up block, wherein, one end of two cushion blocks is fixedly connected, the other end is fixed by back-up block, and the angle between two cushion blocks is 15 °, and wherein a cushion block removably connects with dull and stereotyped (1).

2. a kind of five position line accelerometers test platform according to claim 1, it is characterized in that: the precision of described flat board (1) is at least 0 grade.

3. a kind of five position line accelerometers test platform according to claim 1 and 2, it is characterized in that: described cushion block is that error is less than positive and negative 30 " the 45# steel.

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