Control system and control method of single- axis turntable based on inertia device gyroscope and accelerometers

A technology of accelerometers and inertial devices, applied in the inertial field, can solve problems such as poor stability and low rate accuracy, and achieve the effects of high rate stability, high rate accuracy, and reduced volume

Active Publication Date: 2012-08-08
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a single-axis turntable based on an inertial device gyroscope and an accelerometer for the traditional single-axis turntable that cannot solve the problems of low rate accuracy and poor stability in terms of control.

Method used

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  • Control system and control method of single- axis turntable based on inertia device gyroscope and accelerometers

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specific Embodiment approach 1

[0034] Specific implementation mode one: the following combination figure 1 Describe this implementation mode:

[0035] A single-axis turntable based on an inertial device gyroscope and an accelerometer, including a disc 8, which also includes a liquid floating gyroscope 7 and six accelerometers;

[0036] The liquid floating gyroscope 7 is located at the center of the disc 8 and is used to measure the instantaneous angular rate of the single-axis turntable;

[0037] The six accelerometers are respectively: the second accelerometer 9 for measuring instantaneous centripetal acceleration, the second accelerometer 10 for measuring instantaneous tangential acceleration, the first accelerometer 11 for measuring instantaneous centripetal acceleration, the first An accelerometer 12 for measuring instantaneous tangential acceleration, the third accelerometer 13 for measuring instantaneous centripetal acceleration and the third accelerometer 6 for measuring instantaneous tangential acc...

specific Embodiment approach 2

[0040] Specific implementation mode two: the following combination figure 1 Describe this embodiment, this embodiment is a further description of Embodiment 1:

[0041] A single-axis turntable based on an inertial device gyroscope and an accelerometer, which also includes a main rotating platform 2, an angle encoder 3, a turntable control drive motor 4, an electromechanical follower mechanism 5, a turntable rotating shaft 14, and a turntable base 15;

[0042] The turntable rotating shaft 14 is fixedly installed on the platform frame of the turntable base 15 through a ball bearing, and the main rotating platform 2 is used to place the device under test 1;

[0043] The main rotating platform 2, the electromechanical follow-up mechanism 5, and the disk 8 are all fixed on the rotating shaft 14 of the turntable;

[0044] The turntable control drive motor 4 is used to drive the turntable rotating shaft 14 to rotate, and the angle encoder 3 is used to measure the average angular ve...

specific Embodiment approach 3

[0046] Specific implementation mode three: the following combination image 3 Describe this implementation mode:

[0047] A control system for a single-axis turntable based on an inertial device gyroscope and an accelerometer, which includes a single-axis turntable 16 based on an inertial device gyroscope and an accelerometer, a turntable control box 17 and a turntable control computer 18,

[0048] The turntable control box 17 includes an angle encoder measurement interface 1-1, a motor drive interface circuit 1-2, a liquid floating gyroscope measurement interface 1-3, an accelerometer measurement interface 1-5 and a serial or parallel communication port 1-4;

[0049] The average angular velocity signal output end of the angle encoder 3 is connected to the input end of the angle encoder measurement interface 1-1 of the turntable control box 17, and the output end of the angle encoder measurement interface 1-1 is connected with the serial or parallel communication port 1-4. T...

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Abstract

The invention relates to a control system and a control method of a single- axis turntable based on an inertia device gyroscope and accelerometers, which are the control system and the control method for turntables, belonging to the field of inertia technology. The method and the system aim at solving the problem that traditional single-axis turntables can not solve the low rate precision and low stationarity by controlling. The single- axis turntable based on the inertia device gyroscope and accelerometers comprises a disc, a liquid floated gyroscope and six accelerometers, wherein the six accelerometers are all arranged on edge around the disc and are distributed evenly. The control system of the single- axis turntable based on the inertia device gyroscope and accelerometers comprises the single- axis turntable based on the inertia device gyroscope and accelerometers, a turntable control box, and a turntable control computer, wherein the turntable control box comprises a measuring interface of an angle encoder, a motor-driven interface circuit, a measuring interface of the liquid floated gyroscope, measuring interfaces of the accelerometers, and serial or parallel communication ports. The control method and the control system are used for measuring instantaneous angle rates of the turntable.

Description

technical field [0001] The invention relates to a turntable control system and a control method, belonging to the technical field of inertia. Background technique [0002] The turntable of inertial test equipment is one of the main equipment for gyroscope testing and calibration. For high-precision single-axis turntable inertial navigation test equipment, high precision, high stability, high resolution, and wide dynamic range are important features of the turntable. In terms of the principle and method of speed testing, the traditional single-axis turntable measures the angle through the angle measuring element, and then indirectly obtains the angular rate of the turntable rotation after averaging the time it takes for the turntable to rotate through this angle, rather than the instantaneous angular rate of the turntable. The obtained angular rate cannot truly reflect the rate accuracy and rate stability of the turntable. However, the rate accuracy and rate stability of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00
Inventor 杨亚非钱玉恒王佳伟
Owner HARBIN INST OF TECH
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