A high-precision angle measuring device and its installation and calibration method
A high-precision, angle-measuring technology, used in measuring devices, optical devices, instruments, etc., can solve problems such as difficulty in use, and achieve the effects of less cross-linking, good environmental adaptability, and low temperature coefficient
Active Publication Date: 2018-07-24
FLIGHT AUTOMATIC CONTROL RES INST
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Problems solved by technology
The existing high-precision angle measurement methods are basically based on optical methods or autocollimators to convert angle information into length information. These methods require an extremely high-precision installation relationship with the measured object, and most of them require Pre-installed, not easy to use
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[0031] Below in conjunction with accompanying drawing, the present invention will be further described:
[0032] see figure 1 , The angle measurement device based on the spatial four-frequency differential laser gyro of the present invention includes a spatial four-frequency differential laser gyro and its control circuit, a transition board, an ultra-high-speed sampling circuit, and a computer. Wherein, the spatial four-frequency differential laser gyro is arranged on the rotating shaft to be tested through a transition plate, and the spatial four-frequency differential laser gyro is connected to an ultra-high-speed sampling circuit (FPGA) through its control circuit, and the ultra-high-speed sampling circuit is connected to a computer for signal processing.
[0033] see figure 2 , the control circuit of the spatial four-frequency differential laser gyroscope includes a signal demodulation module, an ignition high voltage control module, a light intensity amplification modu...
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The invention belongs to high-precision angle measurement technology, and relates to an angle measurement device based on a space four-frequency differential laser gyroscope and an installation and calibration method thereof. The angle measuring device includes a spatial four-frequency differential laser gyro and its control circuit, a high-speed control and acquisition circuit, and a computer, wherein the laser gyro is set on the rotating shaft to be measured through a transition plate, and the laser gyro is connected to an ultra-high-speed sampling through its control circuit. circuit, the ultra-high-speed sampling circuit is connected to the computer. The invention integrates the angular velocity component projected onto the gyro sensitive axis to obtain the corresponding rotation angle information, then calibrates the scale coefficient of the gyro and the component of the inertial space angular rate on the gyro sensitive axis, and finally measures the gyro on the rotating axis to be measured The number of pulses output during the rotation process can be used to calculate the angle of rotation of the shaft to be measured. The invention is simple to install, less cross-linked with the measured rotating shaft, the scale coefficient can be highly subdivided, the angle measurement accuracy is high, the dynamic range is large, there is no reaction torque effect on the measured carrier, the temperature coefficient is small, and the structure or structure of the measured carrier is not affected. The composition has better practical application value.
Description
technical field [0001] The invention belongs to high-precision dynamic angle measurement technology, and relates to an angle measurement device based on a space four-frequency differential laser gyroscope and an installation and calibration method thereof. Background technique [0002] Angle measurement is an important part of geometric measurement technology. At present, there are mainly the following types of angle measurement methods in industry: mechanical angle measurement method, electromagnetic angle measurement method, optical angle measurement method and photoelectric angle measurement method. The existing high-precision angle measurement methods are basically based on optical methods or autocollimators to convert angle information into length information. These methods require an extremely high-precision installation relationship with the measured object, and most of them require Pre-installed and not easy to use. [0003] The spatial four-frequency differential l...
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IPC IPC(8): G01B11/26
Inventor 傅鑫王京献陈林峰
Owner FLIGHT AUTOMATIC CONTROL RES INST