CN110542440B - Device and method for measuring residual moment of inertia device - Google Patents
Device and method for measuring residual moment of inertia device Download PDFInfo
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- CN110542440B CN110542440B CN201910984154.1A CN201910984154A CN110542440B CN 110542440 B CN110542440 B CN 110542440B CN 201910984154 A CN201910984154 A CN 201910984154A CN 110542440 B CN110542440 B CN 110542440B
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
Abstract
The invention provides a device and a method for measuring residual torque of an inertial device, and belongs to the technical field of detection. The invention comprises an on-board system, an off-board system and a wireless transmission system, wherein the on-board system and the off-board system are in wireless connection through the wireless transmission system; the under-desk system comprises an under-desk data acquisition and processing system, a server and a cabinet box; the bench system comprises a power supply and gas supply system, an inertia actuating mechanism control system, a product to be tested of the inertia actuating mechanism, a bench data acquisition and processing system, a residual moment test system, a vibration isolation and support system and a vacuum control system, wherein the residual moment test system consists of an air floatation platform, an air foot and a high-precision sensing device. The invention can simulate the on-orbit work of a satellite platform, provides a simulated space mechanics environment, outputs residual torque in real time, is suitable for the direct measurement of various inertia devices, and has the advantages of less numerical calculation, higher precision and perfect theory.
Description
Technical Field
The invention relates to a device and a method for measuring residual moment of an inertial device, and belongs to the technical field of detection.
Background
With the development of the aerospace level in China, the requirement of the modern high-level spacecraft on the observation precision of the effective load is greatly improved. Research shows that in the working process of the inertia actuating mechanism, because factors such as dynamic unbalance, non-ideal characteristics of an electromagnetic field and a shaft system and the like cannot be completely eliminated, residual moment with wide frequency distribution can occur. Such residual moments are often of a small magnitude but can affect the accuracy of the payload's observation and even cause flutter of the satellite platform. At present, in the test of the inertia actuating mechanism, no means is available for testing the residual moment of each level of rotating parts. Therefore, a supplementary residual moment measuring device for the inertia device is needed. The invention discloses an inertial device residual moment measuring device and method based on an air floatation platform, which are an advanced method for solving the problem of residual moment detection.
The thesis of high-precision joint identification technology of rotational inertia and interference moment of a large triaxial air bearing table records that the triaxial air bearing table is used for carrying out load platform integrated full-system closed-loop physical simulation on a remote sensing satellite, and the dynamic characteristics of the satellite during in-orbit operation can be simulated. The article provides a novel large three-axis air bearing table interference torque identification technology, excitation is applied to three axes through an upper flywheel, and high-precision identification of the table body interference torque is achieved through attitude measurement data such as a laser gyro and the like. Different from the traditional identification method, the technology only utilizes the body angular velocity information, does not need angular acceleration information, avoids noise amplification caused by angular velocity differentiation, enables the comprehensive interference torque of the air floatation system to be better than 0.003 N.m, and meets the requirement of high-precision parameter identification. However, the method for measuring residual torque by using attitude measurement data of a laser gyroscope and the like is an indirect measurement method, depends on the precision of a flywheel and the precision of the laser gyroscope, has large calculation amount, generates certain errors in the numerical calculation process, has certain requirements on the performance of a computer, and cannot measure the residual force of translation.
The invention patent of plane air bearing table unbalance force and unbalance moment measuring instrument (with the publication number of CN 105424248B) in the prior art discloses a measuring instrument, which solves the problems that the prior art can not realize the measurement of plane three-degree-of-freedom or two-degree-of-freedom suspension platform micro unbalance force and micro unbalance moment and can not easily decouple the translation and rotation of the plane three-degree-of-freedom or two-degree-of-freedom suspension platform, and comprises four guide rails, four tensiometers, four plane sliding tables and a plurality of supporting seats; four guide rails constitute a square frame structure, and four guide rails are installed on a plurality of supporting seats, install on every guide rail and follow a gliding plane slip table of this guide rail, install a tensiometer on every plane slip table for plane air supporting platform unbalanced force and unbalanced moment measure, and the unbalanced force that wherein proposes and unbalanced moment measuring apparatu structure are complicated relatively, lack protection device.
The invention patent of flywheel friction torque measurement method in the prior art (publication number CN 106525314A) discloses a flywheel friction torque measurement method, which comprises the following steps: step one, a flywheel rotating speed acquisition system is used for acquiring rotating speed information from the maximum rotating speed within a rated rotating speed range to zero under the condition that the flywheel does not have control torque output; step two, carrying out smooth filtering and differential processing on the rotating speed signal through a data processing and analyzing module to obtain sampling point data with the rotating speed information corresponding to time one by one; measuring the average value for multiple times, and estimating the flywheel friction torque in the rotating speed direction; and step four, applying control torque voltage of negative rotating speed to the flywheel, repeating the step one, the step two and the step three, and estimating the friction torque of the flywheel in the rotating speed direction. The method can be widely applied to installation and debugging of the flywheel in the spacecraft, and particularly can be used for measuring the moment of the flywheel after the whole machine is assembled.
The invention discloses a low-damping rolling torque measuring device based on an air bearing (with an authorization publication number of CN 103968982B) in the prior art, which provides the low-damping rolling torque measuring device based on the air bearing, and comprises an elastomer support frame, an elastic hinge, a transition support frame and the air bearing, wherein the air bearing comprises an air bearing stator front blocking block, an air bearing stator, an air bearing rotor and an air bearing stator rear blocking block, throttles are respectively arranged on the air bearing stator front blocking block and the air bearing stator, the elastomer support frame, the transition support frame and the air bearing rotor are firmly connected with each other, the air bearing stator front blocking block, the air bearing stator and the air bearing stator rear blocking block are firmly connected with each other, the front end of the elastic hinge is firmly connected with the elastomer support frame, the rear end of the elastic hinge is firmly connected with the air bearing stator front blocking block, and a radial gap and an axial gap are formed between the air bearing stator and the air bearing rotor. The device is extremely low in damping, can be used for respectively carrying out high-precision measurement on the static rolling torque and the dynamic rolling damping torque of the test model with the fixed posture, and can better meet the requirement of high-precision rolling torque measurement of various aircrafts.
Compared with the detection method, the device and the method for measuring the residual moment of the inertial device can simulate the in-orbit work of a satellite platform, provide a simulated space mechanics environment, output the residual moment in real time and be suitable for various inertial devices. Meanwhile, compared with the method provided by the invention, the residual moment measurement algorithm has the advantages of higher precision, more perfect theory and more convenient practical application.
Disclosure of Invention
The invention aims to solve the problems that the prior art needs indirect measurement and is not suitable for other inertia devices, and further provides a device and a method for measuring residual moment of the inertia device.
The purpose of the invention is realized by the following technical scheme:
an inertial device residual moment measurement apparatus comprising: the system comprises an on-board system, an off-board system and a wireless transmission system, wherein the on-board system and the off-board system are in wireless connection through the wireless transmission system;
the under-desk system comprises an under-desk data acquisition and processing system, a server and a cabinet box; the server and the cabinet box are arranged under the platform, and the server is connected with the under-platform data acquisition and processing system and used for storing data; the cabinet box is used for installing a server;
the on-table system comprises a power supply and gas supply system, an inertia actuating mechanism control system, an inertia actuating mechanism product to be tested, an on-table data acquisition and processing system, a residual moment test system, a vibration isolation and support system and a vacuum control system; the inertial actuating mechanism control system controls the products to be tested of the inertial actuating mechanism, the on-board data acquisition and processing system is connected with the products to be tested of the inertial actuating mechanism and the residual torque testing system to acquire residual torque signals and working state parameters, and the on-board data acquisition and processing system is connected with the off-board data acquisition and processing system of the off-board system through a wireless transmission system, the vibration isolation and support system is arranged below the residual torque test system to isolate external vibration, and the power supply and gas supply system supplies power and gas for the inertial execution mechanism control system, the product to be tested of the inertial execution mechanism and the on-table data acquisition and processing system respectively; the vacuum control system is used for keeping the vacuum state of the bench system and working together with the residual torque test system and the bench data acquisition and processing system,
residual torque test system comprises air supporting platform, air foot and high accuracy sensing device, and wherein, the air supporting platform is the square structure, is equipped with high accuracy contact surface and protector under this structure, and the four corners of air supporting platform is provided with the air foot, forms the air film between high accuracy contact surface and the air foot, and protector is used for jack-up the air supporting platform, high accuracy sensing device comprises high accuracy strain type force transducer and friction torque remove device, and high accuracy strain type force transducer and high accuracy contact surface are located the bench, and friction torque remove device is located the bench, and high accuracy strain type force transducer is used for measuring quasi-static force, the mesa rigid coupling of high accuracy strain type force transducer and air supporting platform.
Two high-precision strain type force sensors are arranged in the high-precision sensing device.
The surface of the friction torque eliminating device is designed with a throttling hole.
The vibration isolation and support system is composed of a vibration isolation test bench, and an air spring is installed on the vibration isolation test bench.
The vacuum control system consists of a vacuumizing device, a vacuum maintaining system and a vacuum degree control system, wherein the vacuum degree control system controls the vacuumizing device and the vacuum maintaining system to form different vacuum states.
A measuring method of a residual moment measuring device of an inertial device comprises the following steps:
step one, system initialization: the air supply system works, namely, the air floating platform is floated, the vacuum control system works, and the vibration isolation and support system works;
secondly, the product to be tested of the inertia actuating mechanism runs, and the inertia actuating mechanism controls the system to work to generate residual torque;
step three, the residual torque test system measures a residual torque signal;
and fourthly, collecting residual moment signals by the on-board data collecting and processing system and the off-board data collecting and processing system, carrying out relevant operation, carrying out comprehensive comparison analysis on relevant data by combining the working state parameters of the product in the inertia actuating mechanism control system and the vacuum information of the test environment in the vacuum control system, and storing the data in the server.
The beneficial effects of the invention are as follows:
compared with the prior art, the residual torque testing method has completely different working modes, the testing method in the prior art is an indirect measuring method, the calculated amount is large, and certain errors can be generated in the numerical calculation process; the method is a direct measurement method, numerical calculation is less, and the method is simpler in structure and suitable for various inertia devices.
The device for measuring the residual moment of the inertia device is not limited to the measurement of a specific inertia device, can be used for testing the residual moments of various inertia devices, has a more mature application foundation, has a good actual use effect, and is greatly improved compared with the prior art.
The invention can simulate the on-orbit work of a satellite platform, provides a simulated space mechanics environment, can output residual torque in real time, and is suitable for various inertial devices. Meanwhile, compared with the method in the prior art, the residual moment measuring algorithm has the advantages of higher precision, more perfect theory and more convenient practical application.
Drawings
Fig. 1 is a schematic diagram of the system composition of the inertial device residual moment measuring device of the present invention.
FIG. 2 is a schematic diagram of the residual torque testing system of the present invention.
Fig. 3 is a schematic structural diagram of a high-precision sensing device in the present invention.
FIG. 4 is a schematic view of a vibration isolation and support system of the present invention.
FIG. 5 is a schematic diagram of a vacuum control system of the present invention.
FIG. 6 is a schematic diagram of a data acquisition and processing system according to the present invention.
Fig. 7 is a schematic diagram of a power supply system according to the present invention.
Fig. 8 is a schematic view of an air supply system in the present invention.
In the figure, reference numeral 1 denotes an under-table data acquisition and processing system, 2 denotes a server, 3 denotes a cabinet, 4 denotes a wireless transmission system, 5 denotes a power supply and gas supply system, 6 denotes an inertial actuator control system, 7 denotes a product to be tested for the inertial actuator, 8 denotes an on-table data acquisition and processing system, 9 denotes a residual moment test system, 10 denotes a vibration isolation and support system, 11 denotes a vacuum control system, 12 denotes an air floating platform, 13 denotes an air foot, 14 denotes a high-precision sensing device, 15 denotes a high-precision contact plane, 16 denotes a high-precision strain type force sensor, 17 denotes a friction moment eliminating device, 18 denotes a vibration isolation test table, 19 denotes an air spring, 20 is a vacuum pumping device, 21 is a vacuum maintaining system, 22 is a vacuum degree control system, 23 is a data acquisition board card, 24 is an on-board computer, 25 is a lithium battery pack charging controller, 26 is a lithium battery pack, 27 is a power distribution box, 28 is a direct current converter, 29 is an inflation valve, 30 is a first pressure gauge, 31 is a high-temperature spring ball check valve, 32 is a first filter, 33 is a safety valve, 34 is a first gas tank, 35 is a second gas tank, 36 is a high-pressure regulator, 37 is a second filter, 38 is an external gas source for debugging, 39 is a low-pressure regulator, 40 is an electromagnetic valve, 41 is a built-in miniature copper filter, 42 is a stop valve, and 43 is a second pressure gauge.
Detailed Description
The invention will be described in further detail below with reference to the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation is given, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1 to 8, an inertial device residual moment measuring apparatus according to the present embodiment includes: the system comprises an on-desk system, an off-desk system and a wireless transmission system 4, wherein the on-desk system and the off-desk system are in wireless connection through the wireless transmission system 4;
the under-desk system comprises an under-desk data acquisition and processing system 1, a server 2 and a cabinet box 3; the server 2 and the cabinet box 3 are arranged under the platform, and the server 2 is connected with the under-platform data acquisition and processing system 1 and used for storing data; the cabinet box 3 is used for installing the server 2;
the on-table system comprises a power supply and gas supply system 5, an inertia actuating mechanism control system 6, an inertia actuating mechanism product to be tested 7, an on-table data acquisition and processing system 8, a residual moment testing system 9, a vibration isolation and support system 10 and a vacuum control system 11; an inertia actuating mechanism control system 6 controls a product 7 to be tested of an inertia actuating mechanism, an on-board data acquisition and processing system 8 is connected with the product 7 to be tested of the inertia actuating mechanism and a residual moment testing system 9 to acquire residual moment signals and working state parameters, the on-board data acquisition and processing system 8 is connected with an off-board data acquisition and processing system 1 of the off-board system through a wireless transmission system 4, a vibration isolation and support system 10 is installed below the residual moment testing system 9 to isolate external vibration, and a power supply and gas supply system 5 respectively supplies power and gas for the inertia actuating mechanism control system 6, the product 7 to be tested of the inertia actuating mechanism and the on-board data acquisition and processing system 8; the vacuum control system 11 is used for keeping the vacuum state of the bench system and works together with the residual torque testing system 9 and the bench data acquisition and processing system 8,
residual moment test system 9 comprises air supporting platform 12, air foot 13 and high accuracy sensing device 14, and wherein, air supporting platform 12 is the square structure, is equipped with high accuracy contact surface 15 and protector under this structure, and the four corners of air supporting platform 12 is provided with air foot 13, forms the air film between high accuracy contact surface 15 and the air foot 13, and protector is used for jack-up air supporting platform 12, high accuracy sensing device 14 comprises high accuracy strain type force transducer 16 and friction torque remove device 17, and high accuracy strain type force transducer 16 and high accuracy contact surface 15 are located the bench, and friction torque remove device 17 is located the bench, and high accuracy strain type force transducer 16 is used for measuring quasi-static force, and high accuracy strain type force transducer 16 and air supporting platform 12's mesa rigid coupling.
Two high-precision strain gauge force sensors 16 are provided in the high-precision sensing device 14.
The surface of the friction torque eliminating device 17 is designed with a throttle hole.
The vibration isolation and support system 10 is composed of a vibration isolation test bench 18, and an air spring 19 is installed on the vibration isolation test bench 18.
The vacuum control system 11 is composed of a vacuum pumping device 20, a vacuum maintaining system 21 and a vacuum degree control system 22, and the vacuum degree control system 22 controls the vacuum pumping device 20 and the vacuum maintaining system 21 to form different vacuum states.
A measuring method of a residual moment measuring device of an inertial device comprises the following steps:
step one, system initialization: the air supply system works, namely, the air floating platform is floated, the vacuum control system works, and the vibration isolation and support system works;
secondly, the product to be tested of the inertia actuating mechanism runs, and the inertia actuating mechanism controls the system to work to generate residual torque;
step three, measuring a residual torque signal by a residual torque test system;
and fourthly, collecting residual moment signals by the on-board data collecting and processing system and the off-board data collecting and processing system, carrying out relevant operation, carrying out comprehensive comparison analysis on relevant data by combining the working state parameters of the product in the inertia actuating mechanism control system and the vacuum information of the test environment in the vacuum control system, and storing the data in the server.
Example 1
As shown in fig. 1, an inertial device residual torque measurement device is mainly composed of a data acquisition and processing system, a server 2, a cabinet 3, a wireless transmission system 4, a power supply and gas supply system 5, an inertial execution mechanism control system 6, an inertial execution mechanism to-be-measured product 7, a residual torque test system 9, a vibration isolation and support system 10 and a vacuum control system 11, wherein the data acquisition and processing system includes an off-board data acquisition and processing system 1 and an on-board data acquisition and processing system 8. The measuring device is divided into an on-board system and an off-board system, and the on-board system and the off-board system are connected through a wireless transmission system 4;
the bench top system includes: the system comprises a power supply and gas supply system 5, an inertia actuating mechanism control system 6, an inertia actuating mechanism product to be tested 7, an on-table data acquisition and processing system 8, a residual moment test system 9, a vibration isolation and support system 10 and a vacuum control system 11;
the inertia actuating mechanism control system 6 controls a product 7 to be tested of the inertia actuating mechanism, the on-table data acquisition and processing system 8 acquires a residual torque signal of the residual torque testing system 9, the on-table data acquisition and processing system 8 acquires working state parameters of the product 7 to be tested of the inertia actuating mechanism, the vibration isolation and support system 10 is installed below the residual torque testing system 9 and used for isolating external vibration, and the power supply and gas supply system 5 supplies power and gas for the inertia actuating mechanism control system 6, the product 7 to be tested of the inertia actuating mechanism and the on-table data acquisition and processing system 8 respectively; the vacuum control system 11 is used for maintaining the vacuum state of the bench system and works together with the residual torque testing system 9 and the bench data acquisition and processing system 8.
The under-table system comprises: the system comprises an under-platform data acquisition and processing system 1, a server 2 and a cabinet box 3; the under-platform data acquisition and processing system 1 is connected with the on-platform data acquisition and processing system 8 of the on-platform system through the wireless transmission system 4; the server 2 is arranged under the platform, connected with the under-platform data acquisition and processing system 1 and used for storing data; the cabinet box 3 is arranged below the platform and used for installing the server 2;
as shown in fig. 2, the residual moment testing system 9 is composed of an air floating platform 12, air feet 13 and a high-precision sensing device 14, the air floating platform 12 is of a square structure, a high-precision contact plane 15 and a protection device are arranged under the structure, the air feet 13 are arranged at four corners of the air floating platform 12, an air film is formed between the high-precision contact plane 15 and the air feet 13, the friction force between the contact surfaces is greatly reduced, and a micro-friction force (moment) environment is created. The protection device is used for jacking the air floating platform 12 when not working, realizing unloading in a non-working state and locking the platform surface by a locking mechanism after unloading. And the measuring table is ensured not to incline when an accident happens.
As shown in fig. 3, each high-precision sensing device 14 is composed of a high-precision strain-type force sensor 16 (located on the air floating platform) and a friction torque eliminating device 17, the high-precision strain-type force sensor 16 and the high-precision contact plane 15 are located on the platform, the friction torque eliminating device 17 is located under the platform, the high-precision strain-type force sensor 16 is used for measuring quasi-static force (torque), because the air floating platform 12 has a large moment of inertia, the high-precision strain-type force sensor 16 must be rigidly coupled with the platform surface of the air floating platform 12, and if the coupling rigidity of the high-precision strain-type force sensor 16 and the air floating platform 12 is insufficient, the measurement torque fluctuation can be caused to generate a large error. Two high-precision strain type force sensors 16 are arranged in each high-precision sensing device 14, and residual torque can be obtained by analyzing data of 4 high-precision sensing devices 14. The friction torque eliminating device 17 is used for eliminating the influence of the friction torque on the measurement result in the measurement process. The surface of the valve body is provided with the throttling hole, so that an air film can be formed, the friction force between contact surfaces is greatly reduced, and a micro-friction force (torque) environment is created.
The wireless transmission system 4 comprises a wireless transceiver and a data communication protocol, and the server is installed on the computer under the desk, which is beneficial to reducing the power consumption on the desk. The wireless data transmission between the off-board computer and the on-board computer 24 adopts an encryption mode, so that the integrity and the safety of the data transmission of the system are improved.
The vibration isolation and support system 10 is comprised of a vibration isolation test station 18, as shown in fig. 4, the vibration isolation test station 18 uses an air spring 19 to effectively isolate external vibrations.
The inertia actuating mechanism control system 6 mainly comprises a control computer, an integrated control module, power supply equipment and the like. The inertial actuator control system 6 can control the existing inertial actuator type spectrum products and the planned products, and meet the control capacity requirement of the rotating component. The system is provided with an independent working table surface, and cannot interfere with the residual torque testing system 9.
As shown in fig. 5, the vacuum control system 11 is mainly composed of a vacuum pumping device 20, a vacuum maintaining system 21, and a vacuum degree control system 22. The vacuum pumping device 20 can meet the requirements of products 7 to be tested and rotating part assemblies of inertia actuating mechanisms of general models. The vacuum maintaining system 21 can ensure that the vacuum state can be maintained for a period of time after each vacuumizing operation is completed. The vacuum control system 22 can control different vacuum conditions according to test requirements. And the vacuum control system 22 can work together with the residual torque testing system 9 and the data acquisition and processing system, so that the residual torque testing accuracy is not influenced.
As shown in fig. 6, the data acquisition and processing system is divided into an upper part and a lower part, and mainly comprises data acquisition equipment, data comprehensive processing software and the like. Residual torque signals in the residual torque testing system 9 are collected through the high-precision strain type force sensor 16, relevant operations are carried out, and comprehensive comparison analysis is carried out on relevant data by combining product working state parameters in the inertia actuating mechanism control system 6 and testing environment vacuum information in the vacuum control system 11.
The high-precision strain type force sensor 16 inputs a residual torque signal in the collected residual torque testing system 9 into a data collecting board 23, working state parameters of a product 7 to be tested of an inertial executing mechanism in the inertial executing mechanism control system 6 are also input into the data collecting board 23, the data collecting board 23 transmits information to an on-table data collecting and processing system 8, the on-table data collecting and processing system 8 is located in an on-table computer 24, the off-table data collecting and processing system 1 is connected with the server 2, and the on-table data collecting and processing system 8 and the off-table data collecting and processing system 1 are connected through a wireless transmission system 4.
The power supply and air supply system 5 is divided into a power supply system and an air supply system, as shown in fig. 7, the power supply system is divided into two parts of supplying power to the inertia actuating mechanism and supplying power to other components of the equipment, wherein the lithium battery pack charging controller 25 controls the lithium battery pack 26, the lithium battery pack 26 is connected with the direct current converter 28, the direct current converter 28 is provided with a power distribution box 27, and the direct current converter 28 divides the power supply into the inertia actuating mechanism and other equipment.
As shown in fig. 8, the air supply system is a dedicated air supply system provided for the air floating platform, and the air supply is filtered and dried to be supplied to the air foot 13. Wherein, the gas supply system includes: the device comprises an inflation valve 29, a first pressure gauge 30, a high-temperature spring ball check valve 31, a first filter 32, a safety valve 33, a first gas tank 34, a second gas tank 35, a high-pressure regulator 36, a second filter 37, an external gas source 38 for debugging, a low-pressure regulator 39, an electromagnetic valve 40, a built-in miniature copper filter 41, a stop valve 42 and a second pressure gauge 43; the gas charging pipeline is sequentially provided with a gas charging valve 29, a high-temperature spring ball check valve 31, a first filter 32 and a safety valve 33, a first pressure gauge 30 is arranged between the gas charging valve 29 and the high-temperature spring ball check valve 31, a first gas tank 34 and a second gas tank 35 are communicated through a pipeline, the gas charging pipeline and a gas inlet pipeline are respectively communicated with the pipeline between the first gas tank 34 and the second gas tank 35, the gas inlet pipeline is sequentially provided with a high-pressure regulator 36, a low-pressure regulator 39, an electromagnetic valve 40, a built-in miniature copper filter 41, a stop valve 42 and a second pressure gauge 43, the second filter 37 and an external gas source 38 for debugging are connected between the high-pressure regulator 36 and the low-pressure regulator 39 through pipelines, and the other end of the gas inlet pipeline is communicated with the gas foot 13.
The server 2 is installed under the platform and is responsible for storing data in real time.
The cabinet case 3 is installed under the table for installing the server 2.
While the invention has been described with reference to specific preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various modifications and alternative embodiments, which may be apparent to those skilled in the art, within the spirit and scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. An inertial device residual moment measuring device, comprising: the system comprises an on-desk system, an off-desk system and a wireless transmission system (4), wherein the on-desk system and the off-desk system are in wireless connection through the wireless transmission system (4);
the under-desk system comprises an under-desk data acquisition and processing system (1), a server (2) and a cabinet box (3); the server (2) and the cabinet box (3) are arranged under the platform, and the server (2) is connected with the under-platform data acquisition and processing system (1) and used for storing data; the cabinet box (3) is used for installing the server (2);
the on-table system comprises a power supply and gas supply system (5), an inertia actuating mechanism control system (6), an inertia actuating mechanism product to be tested (7), an on-table data acquisition and processing system (8), a residual moment test system (9), a vibration isolation and support system (10) and a vacuum control system (11); an inertia actuating mechanism control system (6) controls a product (7) to be tested of an inertia actuating mechanism, an on-table data acquisition and processing system (8) is connected with the product (7) to be tested of the inertia actuating mechanism and a residual moment testing system (9) to acquire residual moment signals and working state parameters, the on-table data acquisition and processing system (8) is connected with an off-table data acquisition and processing system (1) of the off-table system through a wireless transmission system (4), a vibration isolation and support system (10) is installed below the residual moment testing system (9) to isolate external vibration, and a power supply and gas supply system (5) respectively supplies power and supplies gas for the inertia actuating mechanism control system (6), the product (7) to be tested of the inertia actuating mechanism and the on-table data acquisition and processing system (8); the vacuum control system (11) is used for keeping the vacuum state of the bench system and works together with the residual torque test system (9) and the bench data acquisition and processing system (8),
the residual moment testing system (9) is composed of an air floating platform (12), air feet (13) and a high-precision sensing device (14), wherein the air floating platform (12) is of a square structure, a high-precision contact plane (15) and a protection device are arranged below the structure, the air feet (13) are arranged at four corners of the air floating platform (12), an air film is formed between the high-precision contact plane (15) and the air feet (13), the protection device is used for jacking the air floating platform (12) when the air floating platform does not work, unloading is realized in a non-working state, and a table top is locked by a locking mechanism after the unloading; the high-precision sensing device (14) is composed of a high-precision strain type force sensor (16) and a friction torque eliminating device (17), the high-precision strain type force sensor (16) and a high-precision contact plane (15) are located on the platform, the friction torque eliminating device (17) is located under the platform, the high-precision strain type force sensor (16) is used for measuring quasi-static force, and the high-precision strain type force sensor (16) is in rigid connection with the platform surface of the air floating platform (12).
2. An inertial device residual torque measurement device according to claim 1, characterized in that, two high-precision strain gauge force sensors (16) are arranged in the high-precision sensing device (14), and the residual torque can be obtained by analyzing the data of the four high-precision sensing devices (14).
3. An inertial device residual torque measurement device according to claim 1, characterized in that the surface of the friction torque cancellation means (17) is designed with a throttle hole.
4. An inertial device residual moment measuring device according to claim 1, characterized by the fact that said vibration isolation and support system (10) consists of vibration isolation test bench (18), on which vibration isolation test bench (18) air springs (19) are mounted.
5. An inertial device residual torque measurement device according to claim 1, characterized in that the vacuum control system (11) is composed of a vacuum pumping device (20), a vacuum maintaining system (21) and a vacuum degree control system (22), the vacuum degree control system (22) controls the vacuum pumping device (20) and the vacuum maintaining system (21) to form different vacuum states.
6. The measurement method of the inertial device residual moment measurement device according to any one of claims 1 to 5, characterized by comprising the steps of:
step one, system initialization: the air supply system works, the air floating platform floats, the vacuum control system works, and the vibration isolation and support system works;
secondly, the product to be tested of the inertia actuating mechanism runs, and the inertia actuating mechanism controls the system to work to generate residual torque;
step three, measuring a residual torque signal by a residual torque test system;
and fourthly, collecting residual moment signals by the on-board data collecting and processing system and the off-board data collecting and processing system, carrying out relevant operation, carrying out comprehensive comparison analysis on relevant data by combining the working state parameters of the product in the inertia actuating mechanism control system and the vacuum information of the test environment in the vacuum control system, and storing the data in the server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910984154.1A CN110542440B (en) | 2019-10-16 | 2019-10-16 | Device and method for measuring residual moment of inertia device |
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