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Three-stage temperature control method for azimuth-holding instrument

A technology of orientation and temperature control area, applied in temperature control, instrument, non-electric variable control, etc., can solve the problems of affecting the working accuracy of the inertial system, affecting the geometric size of the platform support, and unable to accurately guarantee the working temperature of the gyro, so as to improve the accuracy , The effect of ensuring accuracy

Inactive Publication Date: 2011-06-15
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The unbalanced temperature field of the platform and the change of thermal gradient will affect the geometric dimensions of the platform support, thereby affecting the working accuracy of the inertial system
[0005] Due to changes in the working environment, the gyroscope is easily affected by the external temperature, so a conventional single-stage PID is used (use the proportional, integral, and differential algorithms of the deviation to correct the deviation in the loop, and adjust the parameters through the actuator to stabilize the measured value. Near the set value, to achieve the purpose of controlling a certain parameter) The temperature control method cannot accurately guarantee the stable working temperature of the gyro

Method used

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  • Three-stage temperature control method for azimuth-holding instrument
  • Three-stage temperature control method for azimuth-holding instrument
  • Three-stage temperature control method for azimuth-holding instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] The azimuth holding instrument composed of gyroscope, platform inner ring assembly, platform outer ring assembly, and housing, when the ambient temperature is -30°C, the azimuth holding instrument is divided into three temperature zones for temperature control:

[0080] The first-level temperature zone, which is the environment-level temperature control zone, is the part other than the platform inner ring components, platform outer ring components and gyroscope, and is used to resist the harsh conditions of the outside world. The temperature rise of the environment-level temperature control zone is controlled by the shell. Heating, torque motor heating, and platform-level temperature control zone heat dissipation to the shell are jointly balanced and controlled; the temperature and error of the environment-level temperature control zone are -5±0.2°C;

[0081] The second-level temperature zone, which is a platform-level temperature control zone, is composed of platform in...

Embodiment 2

[0086] The azimuth holding instrument composed of gyroscope, platform inner ring assembly, platform outer ring assembly, and housing, when the ambient temperature is 15°C, the azimuth holding instrument is divided into three temperature zones for temperature control:

[0087] The first-level temperature zone, which is the environment-level temperature control zone, is the part other than the platform inner ring components, platform outer ring components and gyroscope, and is used to resist the harsh conditions of the outside world. The temperature rise of the environment-level temperature control zone is controlled by the shell. Heating, torque motor heating, and platform-level temperature control zone heat dissipation to the shell are jointly balanced and controlled; the temperature and error of the environment-level temperature control zone are 30±0.2°C;

[0088] The second-level temperature zone, which is a platform-level temperature control zone, is composed of platform inn...

Embodiment 3

[0093] The azimuth holding instrument composed of gyroscope, platform inner ring assembly, platform outer ring assembly, and housing, when the ambient temperature is 45°C, the azimuth holding instrument is divided into three temperature zones for temperature control:

[0094] The first-level temperature zone, which is the environment-level temperature control zone, is the part other than the platform inner ring components, platform outer ring components and gyroscope, and is used to resist the harsh conditions of the outside world. The temperature rise of the environment-level temperature control zone is controlled by the shell. Heating, torque motor heating and heat dissipation from the platform-level temperature control zone to the shell are jointly balanced and controlled; the temperature and error of the environment-level temperature control zone are 55±0.2°C;

[0095] The second-level temperature zone, which is a platform-level temperature control zone, is composed of plat...

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Abstract

The invention relates to a temperature control method for an azimuth-holding instrument in a navigation system of a land vehicle, in particular to a three-stage temperature control method for an azimuth-holding instrument. With the three-stage temperature control method, the process that a gyro as a core part of the azimuth-holding instrument reaches a heat balance state after being started can be shortened so that an inertial navigation system rapidly enters a stable working state.

Description

technical field [0001] The present invention relates to a temperature control system for an azimuth maintainer in a land vehicle navigation system, in particular to a three-level temperature control method for an azimuth maintainer, through which the core components of the azimuth maintainer can be shortened— —The process of reaching the thermal equilibrium state after the gyro is started, so that the inertial navigation system quickly enters a stable working state. Background technique [0002] Due to the mobility, rapidity, and flexibility required by modern warfare, heavy weapons must be able to enter the position before they can be fired, and then they can be withdrawn; at the same time, for indirect aiming weapons, after entering the position, it is required to know its high-precision coordinates and orientation. In this way, an autonomous land vehicle navigation system that can quickly determine its own orientation and coordinates has extraordinary significance. The ...

Claims

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Application Information

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IPC IPC(8): G05D23/20
Inventor 刘星桥韩勇强赵治伟李振华陈家斌
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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