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Quartz Accelerometer for Aerospace

Quartz Accelerometer for Aerospace

Introduction:
High-precision
extensive measurement range Specifications
be used in navigation system of Tank, military vehicle etc
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1.Principle:

The yoke is composed of a soft magnetic material having a low temperature coefficient and good magnetic permeability. The magnetic steel adopts the AL-Ni-Co8 permanent magnet material with good magnetic permeability and is processed by a centerless grinding machine. The material of the flexible sheet is quartz glass with excellent temperature performance, and the shape is ultrasonically processed. The processing of the flexible component is generally performed by chemical etching; the entire flexible sheet can also be processed by a reactive ion etching process, but the cost is high.

The differential capacitance change C caused by the acceleration is detected by the differential capacitance detector in the servo circuit, and its output is a current, which is converted into an output voltage by the current integrator, and then the transconductance compensation amplifier turns the voltage into an output current. The magnitude of the output current is proportional to the input acceleration. The polarity depends on the direction of the input acceleration.


Accelerometer

2.Application:

Navigation guidance systems for missiles, aircraft, ships, and chariots must have speed and position information. In low-demand applications, people use airspeed meters, Mach number sensors, odometers, etc., but with the performance requirements of the weapon system. Improve, the above instruments can not meet the requirements. The line accelerometer can be installed in a moving object to directly measure its acceleration, and then obtain the speed and position. The measurement accuracy is high and the dynamic performance is good, which is much better than the airspeed meter and the odometer.


3.Feature:  

The NS-QAI-C quartz accelerometer has the characteristics of simple structure, high precision and extensive measurement range. It has a wide range of applications in inertial navigation systems and geodetic systems.


 4.Specifications:

No.

Paramete

Performance Indicator

Unit

02

01

1

Bias

≤4

≤4

mg

2

Scale Factor

1.1~1.5

1.1~1.5

mA/g

3

Second-order Nonlinearity

≤30

≤50

μg/g 2

4

Bias Temp Coefficient

≤40

≤50

ug/℃

5

Scale Factor Temp Coefficient

≤60

≤80

ppm/℃

6

Bias month Repeatability

≤40

≤40

μg

7

Scale Factor Repeatability

≤40

≤40

ppm

8

Second-order Nonlinearity Repeatability

≤20

≤20

μg/g 2

9

Natural Frequency

≤800

≤800

Hz

10

Acceleration Range

≥20

≥20

g

11

Vibration

8

8

grms

12

Shock

120g,4.5ms,1/2sin

120g,4.5ms,1/2sin

g, ms

13

Operating Temp

-45~+80

-45~+80

14

Weight

≤80

≤80

g

15

Resolution

≤5×10-6

≤5×10-6

g

16

Operating Voltage

±12~± 15

±12~± 15

v

 

5.Dimension:

Quartz Accelerometer for Aerospace

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