CN112414433A - Locking and angle measurement composite device for inertial navigation system calibration - Google Patents
Locking and angle measurement composite device for inertial navigation system calibration Download PDFInfo
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- CN112414433A CN112414433A CN202011354332.1A CN202011354332A CN112414433A CN 112414433 A CN112414433 A CN 112414433A CN 202011354332 A CN202011354332 A CN 202011354332A CN 112414433 A CN112414433 A CN 112414433A
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- steel ball
- seat
- fixed
- worm
- guide
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
- G01C25/005—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass initial alignment, calibration or starting-up of inertial devices
Abstract
A locking and angle measurement composite device for calibrating an inertial navigation system comprises a rotating component, a base, a turntable bearing, a transition seat, a supporting seat, an A angular contact bearing pair, a sliding steel ball seat, a sliding steel ball holder, a fixed gear disc, a rotating gear disc, a photoelectric reading unit, a ring grating, a guide steel ball seat, a guide steel ball holder, a guide steel ball, a guide mandrel, a servo motor seat, a servo motor, a proximity switch, an infrared probe, a B angular contact bearing pair, a worm and a worm gear, wherein the servo motor drives a worm gear and worm gear pair to rotate to drive the fixed gear disc to lift, so that the fixed gear disc and the rotating gear disc are meshed and separated to achieve the locking and unlocking functions, the ring grating is used for rotating angle feedback, and the closed-loop control of inertial group overturning is; the inertial unit is structurally characterized by overturning action, locking and releasing action and angle closed-loop control, high locking and positioning precision and excellent shock and vibration resistance.
Description
Technical Field
The invention relates to a locking and angle measuring composite device for calibrating an inertial navigation system.
Background
An inertial navigation system (called an inertial navigation system for short) is the core of an aircraft control system and provides guarantee for the hit precision and the use performance of an aircraft. The inertial device is used as an element of the inertial navigation system for sensing position and angle information, is an important component of the inertial navigation system, directly determines the position, speed and attitude accuracy of the navigation system according to the accuracy, and plays an important role in controlling the motion of the aircraft. With the continuous development of equipment, higher requirements are provided for the use precision of an inertial navigation system, multiple-time and multi-position locking is required in the process of calibrating the inertial navigation, and the locking and positioning precision of conventional equipment is difficult to guarantee due to the influence of environmental vibration and self heating, so that the new requirements of inertial set calibration cannot be met.
Disclosure of Invention
The invention aims to provide a locking and angle measuring composite device for calibrating an inertial navigation system, so as to solve the problems in the background technology.
The technical scheme adopted for achieving the purpose is that the locking and angle measurement composite device for calibrating the inertial navigation system comprises a rotating component, a base, a turntable bearing, a transition seat, a supporting seat, an A angular contact bearing pair, a sliding steel ball seat, a sliding steel ball retainer, a fixed gear disc, a rotating gear disc, a photoelectric reading unit, a ring grating, a guiding steel ball seat, a guiding steel ball retainer, a guiding steel ball, a guiding mandrel, a servo motor seat, a servo motor, a proximity switch, an infrared probe, a B angular contact bearing pair, a worm and a worm wheel; the rotating part and the ring grating are respectively and fixedly connected to the upper end and the lower end of the inner ring of the turntable bearing; the turntable bearing outer ring is fixed on the base, the transition seat is fixed at the upper end of the turntable bearing outer ring, the support seat is fixed at the upper end of the transition seat, the A angular contact bearing is oppositely arranged in the support seat, the worm wheel is arranged between the A angular contact bearing pair, the sliding steel ball seat is arranged at the lower end of the support seat, the sliding steel ball holder is arranged at the inner side of the sliding steel ball seat, the sliding steel ball is arranged in the sliding steel ball holder, the fixed gear is arranged at the lower end of the support seat and connected with the lower end of the worm wheel through a thread pair, the rotating fluted disc is fixed at the upper end of the rotating component, the rotating fluted disc and the fixed gear are concentrically fixed, the photoelectric reading unit is fixed on the turntable bearing outer ring, the photoelectric reading unit is aligned with the annular grating in, the guide steel ball is arranged in the guide steel ball retainer, the guide mandrel is arranged on the inner side of the guide steel ball retainer and is positioned at the upper end of the fixed gear disc, the servo motor seat is fixed on the side face of the transition seat, the servo motor is fixed on the servo motor seat, the tail end of the servo motor is inserted into the slotted structure at the tail end of the worm, the proximity switch is fixed on the supporting seat and is positioned above the fixed gear disc, the infrared probe is aligned with a hole in the worm and is fixed in the supporting seat, the angular contact bearing B is arranged in the supporting seat, the worm is arranged between the angular contact bearing B, and the worm wheel are arranged in an.
Advantageous effects
Compared with the prior art, the invention has the following advantages.
1. The invention can realize inertia unit turning action, locking and releasing action and angle closed-loop control on one set of structure;
2. the invention can utilize the fluted disc to carry out position locking and positioning with high precision, the absolute positioning precision can reach within 5' and the shock resistance and vibration resistance performance are excellent.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the present invention in a longitudinal cut-away configuration;
FIG. 3 is a schematic view of the present invention in a cross-sectional configuration;
shown in the figure: the system comprises a 1-rotating part, a 2-base, a 3-turntable bearing, a 4-transition seat, a 5-supporting seat, a 6-A angular contact bearing pair, a 7-sliding steel ball, an 8-sliding steel ball seat, a 9-sliding steel ball retainer, a 10-fixed gear disc, a 11-rotating fluted disc, a 12-photoelectric reading unit, a 13-circular grating, a 14-guiding steel ball seat, a 15-guiding steel ball retainer, a 16-guiding steel ball, a 17-guiding mandrel, an 18-servo motor seat, a 19-servo motor, a 20-proximity switch, a 21-infrared probe, a 22-B angular contact bearing pair, a 23-worm and a 24-worm wheel.
Detailed Description
The invention is further described with reference to the following examples and the accompanying drawings.
A locking and angle measurement composite device for calibrating an inertial navigation system comprises a rotating component 1, a machine base 2, a turntable bearing 3, a transition seat 4, a supporting seat 5, an A angular contact bearing pair 6, a sliding steel ball 7, a sliding steel ball seat 8, a sliding steel ball retainer 9, a fixed gear disk 10, a rotating gear disk 11, a photoelectric reading unit 12, a circular ring grating 13, a guide steel ball seat 14, a guide steel ball retainer 15, a guide steel ball 16, a guide mandrel 17, a servo motor seat 18, a servo motor 19, a proximity switch 20, an infrared probe 21, a B angular contact bearing pair 22, a worm 23 and a worm wheel 24, and is shown in figure 1.
The rotating component 1 and the ring grating 13 are respectively fixedly connected to the upper end and the lower end of the inner ring of the turntable bearing 3 and can rotate along with the inner ring of the turntable bearing 3, the outer ring of the turntable bearing 3 is fixed on the base 2, the transition seat 4 is fixed on the outer ring of the turntable bearing 3, the support seat 5 is fixed on the transition seat 4, the A angular contact bearing pair 6 is arranged in the support seat 5, the worm wheel 24 is arranged between the A angular contact bearing pair 6, the sliding steel ball seat 8 is arranged at the lower end of the support seat 5, the sliding steel ball holder 9 is arranged at the inner side of the sliding steel ball seat 8, the sliding steel ball 7 is arranged in the sliding steel ball holder 9, the fixed gear 10 is arranged at the lower end of the support seat 5 and connected with the lower end of the worm wheel 24 through a thread pair, and the rotating gear 11, the photoelectric reading unit 12 is fixed on the outer ring of the turntable bearing 3 and is aligned with the circular grating 13 in the middle in the height direction, the guide steel ball seat 14 is fixed at the upper end of the supporting seat 5, the guide steel ball holder 15 is arranged at the inner side of the guide steel ball seat 14, the guide steel ball 16 is arranged in the guide steel ball holder 15, the guide mandrel 17 is arranged at the inner side of the guide steel ball holder 15 and is fixed at the upper end of the fixed gear 10, the servo motor seat 18 is fixed at the side surface of the transition seat 4, the servo motor 19 is fixed on the servo motor seat 18, the tail end of the servo motor 19 is inserted into the slotted structure at the tail end of the worm 23, the proximity switch 20 is fixed on the supporting seat 5 and is positioned above the fixed gear 10, the infrared probe 21 is fixed in the supporting seat 5 and is aligned with the hole on the worm 23, the pair of angular contact bearings B22 is disposed in the support base 5, and the worm 23 is disposed between the pair of angular contact bearings B22 and orthogonally disposed to the worm wheel 24.
The rotating component 1 is controlled in a closed loop mode through the angle fed back by the circular ring grating 13.
The working principle of the invention is that when the inertial measurement unit needs to be accurately positioned during calibration, the servo motor 19 drives the worm wheel 24 and the worm 23 mechanism to rotate, the tail end of the worm wheel 24 is connected with the fixed gear 10 by adopting a thread pair, and the worm wheel 24 pushes the fixed gear 10 to be meshed with the rotating gear 11 while rotating, so that the accurate locking of the angular position is realized; after calibration of a certain accurate positioning position is completed, the servo motor 19 drives the worm wheel 24 and worm 23 mechanism to rotate reversely to drive the fixed gear disc 10 and the rotating gear disc 11 to be disengaged, and the rotating part 1 can freely rotate around the base 2 to realize the overturning of the inertia assembly; in the overturning process of the inertial set, the angular position of the inertial set is measured through the annular grating 13, and the angular position feedback is utilized to realize the closed-loop control of the inertial set overturning.
Claims (1)
1. A locking and angle measurement composite device for calibrating an inertial navigation system comprises a rotating component (1), a machine base (2), a turntable bearing (3), a transition seat (4), a supporting seat (5), an A angular contact bearing pair (6), a sliding steel ball (7), a sliding steel ball seat (8), a sliding steel ball retainer (9), a fixed gear (10), a rotating gear (11), a photoelectric reading unit (12), a ring grating (13), a guide steel ball seat (14), a guide steel ball retainer (15), a guide steel ball (16), a guide mandrel (17), a servo motor seat (18), a servo motor (19), a proximity switch (20), an infrared probe (21), a B angular contact bearing pair (22), a worm (23) and a worm gear (24); the rotary disc bearing is characterized in that the rotary part (1) and the circular grating (13) are respectively and fixedly connected to the upper end and the lower end of an inner ring of the rotary disc bearing (3); the outer ring of the turntable bearing (3) is fixed on the base (2), the transition seat (4) is fixed at the upper end of the outer ring of the turntable bearing (3), the support seat (5) is fixed at the upper end of the transition seat (4), the A angular contact bearing pair (6) is arranged in the support seat (5), the worm wheel (24) is arranged between the A angular contact bearing pair (6), the sliding steel ball seat (8) is arranged at the lower end of the support seat (5), the sliding steel ball retainer (9) is arranged at the inner side of the sliding steel ball seat (8), the sliding steel ball (7) is arranged in the sliding steel ball retainer (9), the fixed gear (10) is arranged at the lower end of the support seat (5) and is connected with the lower end of the worm wheel (24) through a thread pair, the rotating gear disc (11) is fixed at the upper end of the rotating component (1), the rotating gear disc (11) is concentrically fixed with the fixed gear (10), the photoelectric reading, the photoelectric reading unit (12) is aligned with the annular grating (13) in the middle in the height direction, the guide steel ball seat (14) is fixed at the upper end of the supporting seat (5), the guide steel ball holder (15) is arranged on the inner side of the guide steel ball seat (14), the guide steel ball (16) is arranged in the guide steel ball holder (15), the guide mandrel (17) is arranged on the inner side of the guide steel ball holder (15), the guide mandrel (17) is positioned at the upper end of the fixed gear disc (10), the servo motor seat (18) is fixed on the side surface of the transition seat (4), the servo motor (19) is fixed on the servo motor seat (18), the tail end of the servo motor (19) is inserted into a slotted structure at the tail end of the worm (23), the proximity switch (20) is fixed on the supporting seat (5), the proximity switch (20) is positioned above the fixed gear disc (10), the infrared probe (21) is aligned with a hole on the worm (23, the B angular contact bearing pair (22) is arranged in the supporting seat (5), the worm (23) is arranged between the B angular contact bearing pair (22), and the worm (23) and the worm wheel (24) are arranged orthogonally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011354332.1A CN112414433A (en) | 2020-11-27 | 2020-11-27 | Locking and angle measurement composite device for inertial navigation system calibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011354332.1A CN112414433A (en) | 2020-11-27 | 2020-11-27 | Locking and angle measurement composite device for inertial navigation system calibration |
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| Publication Number | Publication Date |
|---|---|
| CN112414433A true CN112414433A (en) | 2021-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011354332.1A Pending CN112414433A (en) | 2020-11-27 | 2020-11-27 | Locking and angle measurement composite device for inertial navigation system calibration |
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| CN (1) | CN112414433A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352869A (en) * | 2021-12-22 | 2022-04-15 | 九江冠成仿真技术有限公司 | Compact high-precision single-shaft holder |
-
2020
- 2020-11-27 CN CN202011354332.1A patent/CN112414433A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352869A (en) * | 2021-12-22 | 2022-04-15 | 九江冠成仿真技术有限公司 | Compact high-precision single-shaft holder |
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