CN117268611A - Vertical torsional pendulum high-precision micro-thrust measuring device - Google Patents
Vertical torsional pendulum high-precision micro-thrust measuring device Download PDFInfo
- Publication number
- CN117268611A CN117268611A CN202311327773.6A CN202311327773A CN117268611A CN 117268611 A CN117268611 A CN 117268611A CN 202311327773 A CN202311327773 A CN 202311327773A CN 117268611 A CN117268611 A CN 117268611A
- Authority
- CN
- China
- Prior art keywords
- micro
- base
- thrust
- fixed
- fixing piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000006073 displacement reaction Methods 0.000 claims abstract description 46
- 238000005259 measurement Methods 0.000 claims abstract description 34
- 238000009413 insulation Methods 0.000 claims abstract description 29
- 230000035939 shock Effects 0.000 claims abstract description 7
- 238000004891 communication Methods 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 229920001971 elastomer Polymers 0.000 claims description 7
- 229920002379 silicone rubber Polymers 0.000 claims description 5
- 239000004945 silicone rubber Substances 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000011888 foil Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 2
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- RHZWSUVWRRXEJF-UHFFFAOYSA-N indium tin Chemical compound [In].[Sn] RHZWSUVWRRXEJF-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- 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
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0038—Force sensors associated with force applying means applying a pushing force
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a vertical torsion pendulum high-precision micro-thrust measuring device, which comprises: a rack base with shock insulation and anti-interference effects; the measuring rack is arranged on the rack base and is used for installing the micro-thruster and converting the thrust of the micro-thruster into a micro-displacement capable of being directly measured; the cable bridging device is arranged on the bench base and is used for realizing power supply and communication of the micro thruster in a bridging mode so as to reduce the influence of cables; the high-precision displacement sensor is arranged on the bench base and is used for converting the micro displacement of the measuring bench into an electric signal; the standard force device and the electromagnetic damper are arranged on the base of the stand and are used for calibrating the measuring stand, determining the rigidity coefficient of the measuring stand and realizing the rapid steady-state measurement of the measuring stand. The vertical torsion high-precision micro-thrust measuring device provided by the invention has the advantages that the assembly and the debugging of the micro-thruster are simpler and more convenient, the measuring range of thrust measurement can be adjusted, and the accurate measurement of the micro-thrust of various micro-thrusters can be realized.
Description
Technical Field
The invention relates to the technical field of micro-thrust measuring devices, in particular to a vertical torsion high-precision micro-thrust measuring device.
Background
The existing micro-thrusters are of various types such as electric heating thrusters, electrostatic thrusters, electromagnetic thrusters, cold air thrusters and the like, and the thrust is in the order of micro-cattle to milli-cattle. The micro thruster can be used as an actuating mechanism for controlling the gesture and the orbit in space science test tasks and commercial satellite tasks, and is an indispensable power system of satellites. The thrust and thrust-weight ratio of the micro-thruster are very small, and the thrust measurement is affected by the high temperature of the micro-thruster, electromagnetic radiation, cables, air pipes and the like, so that the on-line accurate measurement of the thrust of the micro-thruster and the difficulty thereof are caused. In addition, the force, heat and electromagnetic characteristics of different types of micro thrusters are different, so that various micro thrust measuring devices with different principles and different structures are developed at home and abroad to meet different thrust calibration requirements of various micro thrusters, and the micro thrust measuring devices have advantages and disadvantages and limitations.
In view of this, it is necessary to design a micro-thrust measuring device in different past for the assembly and debugging of micro-thruster is more simple and convenient, and thrust measurement's range can be adjusted, can realize the accurate measurement to the tiny thrust of multiple micro-thruster.
Disclosure of Invention
Accordingly, the present invention is directed to a high-precision micro-thrust measurement device for vertical torsional pendulum that substantially obviates one or more of the problems described above.
In order to achieve the above object, the present invention provides the following technical solutions:
a vertical torsional pendulum high precision micro thrust measuring device, comprising:
a rack base with shock insulation and anti-interference effects;
the measuring rack is arranged on the rack base and is used for installing a micro thruster and converting the thrust of the micro thruster into a micro displacement capable of being directly measured;
the cable bridging device is arranged on the rack base and is used for realizing power supply and communication of the micro thruster in a bridging mode so as to reduce the influence of cables;
a high-precision displacement sensor mounted on the stage base for converting a minute displacement of the measurement stage into an electrical signal;
the standard force device and the electromagnetic damper are arranged on the stand base and are used for calibrating the measuring stand, determining the rigidity coefficient of the measuring stand and realizing the rapid steady-state measurement of the measuring stand.
Further, the rack base comprises a base upper plate, a base lower plate, an upper supporting rod, a lower supporting rod and a shock insulation rubber pad; the base upper plate and the base lower plate are horizontally arranged, and the base upper plate is arranged above the base lower plate at intervals; the upper support rods are arranged in a plurality and supported between the base upper plate and the base lower plate; the plurality of lower support rods are arranged and fixed at the bottom of the base lower plate; the lower end of each lower supporting rod is respectively provided with one vibration isolation rubber pad.
Further, the measuring rack comprises a linkage rod, a pivot, a swing arm, a heat insulation support, a thruster mounting platform and a counterweight; the linkage rod is horizontally arranged and is rotatably connected with the upper end of the swing arm through the pivot; the lower end of the swing arm is rotatably connected with the base upper plate through the pivot; the upper base plate is provided with a column penetrating hole, the lower end of the heat insulation support column is fixed on the linkage rod, the upper end of the heat insulation support column penetrates through the column penetrating hole and then is exposed above the upper base plate, and the diameter of the column penetrating hole is larger than that of the heat insulation support column; the thruster mounting platform is fixed at the upper end of the heat insulation support; the counterweight is detachably fixed under the base lower plate, and the mass of the counterweight is adjustable.
Further, a plurality of linkage rods are arranged, a plurality of swing arms are pivoted below each linkage rod, and a plurality of heat insulation struts are fixed above each linkage rod; the plurality of linkage rods are arranged in parallel, the plurality of swing arms are arranged in parallel, the axes of the plurality of pivots are parallel or coincident, and the plurality of heat insulation struts are arranged in parallel.
Further, the cable bridging device comprises a fixed liquid box, a fixed binding post, a binding post fixing piece and a movable binding post; the fixed liquid box is fixed above the base upper plate, and a plurality of grooves are formed in the top of the fixed liquid box; the side part of the fixed liquid box is provided with the fixed wiring terminals, the inner ends of the fixed wiring terminals extend into the grooves, and each groove at least corresponds to one fixed wiring terminal; one end of the binding post fixing piece is fixed on the thruster mounting platform, and the other end of the binding post fixing piece is provided with a plurality of movable binding posts; the lower ends of the movable wiring terminals extend into the grooves, and a plurality of the movable wiring terminals are arranged in one-to-one correspondence with a plurality of the grooves.
Further, the high-precision displacement sensor adopts coaxial laser interference.
Further, the standard force device and the electromagnetic damper comprise at least one permanent magnet fixing piece, at least one set of standard force device and at least one set of electromagnetic damper; the permanent magnet fixing piece is fixed below the linkage rod; the standard force device and the electromagnetic damper comprise a bottom plate fixing piece, a six-degree-of-freedom manual displacement table, a solenoid coil fixing piece, a solenoid coil and a permanent magnet, wherein the bottom plate fixing piece is fixed on a lower base plate, the six-degree-of-freedom manual displacement table is vertically arranged on the bottom plate fixing piece, the solenoid coil fixing piece is arranged at the top of the six-degree-of-freedom manual displacement table, the solenoid coil is arranged at one end of the spool coil fixing piece, which faces the permanent magnet fixing piece, the permanent magnet is arranged at one side of the permanent magnet fixing piece, which faces the spool coil fixing piece, and the permanent magnet corresponds to the solenoid coil.
Further, an aluminum foil is coated on the peripheral side of the space between the upper and lower base plates.
Furthermore, the gas circuit of the micro thruster adopts a plurality of groups of micro silicone rubber tubes to realize gas circuit bridging so as to reduce the influence of the gas circuit.
The invention has the following advantages:
compared with the existing micro-thrust measuring device, the mass center adjustment is needed, the process usually needs a plurality of hours, the micro-thrust measuring device does not need the mass center adjustment, the micro-thrust measurement can be carried out through the standard force device and the electromagnetic damper, the assembly and the debugging of the micro-thrust device are simpler and more convenient, the measuring range of the thrust measurement can be adjusted by replacing pivots with different rigidities and adjusting the weight of the counterweight, the influence of cables, air circuits and high temperature is hardly caused, and the accurate measurement of the micro-thrust of various micro-thrust devices is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those skilled in the art from this disclosure that the drawings described below are merely exemplary and that other embodiments may be derived from the drawings provided without undue effort.
The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the invention, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present invention, should fall within the scope of the invention.
FIG. 1 is a schematic structural diagram of a vertical torsional pendulum high-precision micro-thrust measuring device provided by an embodiment of the invention;
fig. 2 is a schematic structural diagram of a cable bridging device of the vertical torsion high-precision micro-thrust measuring device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a standard force device and an electromagnetic damper of the vertical torsional pendulum high-precision micro-thrust measuring device provided by the embodiment of the invention.
In the figure:
1-a bench base, 11-a shock insulation rubber pad, 12-a lower support rod, 13-a base lower plate, 14-an upper support rod and 15-a base upper plate;
2-measuring rack, 21-thruster mounting platform, 22-heat insulation support, 23-linkage rod, 24-swing arm, 25-pivot and 26-counterweight;
the cable bridge device comprises a 3-cable bridging device, a 31-fixed liquid box, a 32-fixed binding post, a 33-movable binding post, a 34-binding post fixing piece and a 35-groove;
4-a high-precision displacement sensor;
the device comprises a 5-standard force device, an electromagnetic damper, a 51-permanent magnet fixing piece, a 52-solenoid coil fixing piece, a 53-permanent magnet, a 54-solenoid coil, a 55-six-degree-of-freedom manual displacement table and a 56-base plate fixing piece;
6-a micro thruster to be measured.
Detailed Description
Other advantages and advantages of the present invention will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terms such as "upper", "lower", "left", "right", "middle" and the like are also used in the present specification for convenience of description, but are not intended to limit the scope of the present invention, and the changes or modifications of the relative relationship thereof are considered to be within the scope of the present invention without substantial modification of the technical content.
As shown in fig. 1 to 3, the present embodiment provides a vertical torsion high-precision micro-thrust measuring device, which comprises a rack base 1, a measuring rack 2, a cable bridge device 3, a high-precision displacement sensor 4, a standard force device and an electromagnetic damper 5.
The bench base 1 comprises a shock insulation rubber pad 11, a lower supporting rod 12, a base lower plate 13, an upper supporting rod 14 and a base upper plate 15. The bench base 1 is horizontally fixed on a mounting panel in the vacuum test tank and is mainly used for mounting the measuring bench 2, the cable bridging device 3, the high-precision displacement sensor 4, the standard force device and the electromagnetic damper. The upper base plate 15 and the lower base plate 13 are horizontally arranged, and the upper base plate 15 is arranged above the lower base plate 13 at intervals. The upper struts 14 are provided in plural, and the plural upper struts 14 are supported between the base upper plate 15 and the base lower plate 13. The plurality of lower struts 12 are provided, and the plurality of lower struts 12 are fixed to the bottom of the base lower plate 13. The lower end of each lower strut 12 is provided with a shock-insulating rubber pad 11 respectively. During the measurement of the micro-thruster, an aluminum foil is wrapped outside (the peripheral side of the space between the upper base plate 15 and the lower base plate 13), so that the aerodynamic interference and the heat radiation influence of the micro-thruster are isolated.
The measuring bench 2 comprises a thruster mounting platform 21, a heat insulation support 22, a linkage rod 23, a swing arm 24, a pivot 25 and a counterweight 26. The linkage rod 23 is horizontally arranged and is rotatably connected with the upper end of the swing arm 24 through a pivot 25. The lower end of the swing arm 24 is rotatably connected to the base upper plate 15 through a pivot 25. The base upper plate 15 is provided with a column penetrating hole, the lower end of the heat insulation support column 22 is fixed on the linkage rod 23, the upper end of the heat insulation support column passes through the column penetrating hole and then is exposed above the base upper plate 15, and the diameter of the column penetrating hole is larger than that of the heat insulation support column 22. The thruster mounting platform 21 is fixed to the upper end of the insulating support 22. A counterweight 26 is detachably fixed under the base lower plate 13, and the mass of the counterweight 26 is adjustable. In the embodiment, two linkage rods 23 are provided, two swing arms 24 are respectively pivoted at two ends of each linkage rod 23, and two heat insulation struts 22 are respectively fixed above each linkage rod 23; the two linkage rods 23 are arranged in parallel, the 4 swing arms 24 are arranged in parallel, the axes of the 8 pivots 25 are parallel or coincident, and the 4 heat insulation struts 22 are arranged in parallel, so that a parallelogram vertical torsion pendulum structure is formed. The micro-thruster 6 to be measured is arranged on the thruster mounting platform 21, and the measuring bench 2 can convert the thrust of the micro-thruster into a micro-displacement which can be directly measured.
The cable bridging device 3 includes: a fixed liquid box 31, a fixed binding post 32, a movable binding post 33 and a binding post fixing piece 34. The fixed liquid box 31 is fixed above the base upper plate 15, and a plurality of grooves 35 are formed in the top of the fixed liquid box 31. The side portion of the fixed liquid box 31 is provided with fixed wiring terminals 32, the inner ends of the fixed wiring terminals 32 extend into the grooves 35 (the communicating portions are in a sealing design), and each groove 35 at least corresponds to one fixed wiring terminal 32 (for example, a plurality of fixed wiring terminals 32 can be vertically arranged outside the groove 35, and a spare wiring terminal is provided in a mode of adding wiring terminals). One end of the terminal fixing member 34 is fixed to the thruster mounting platform 21, and the other end is provided with a plurality of movable terminals 33. The lower ends of the movable wiring terminals 33 extend into the grooves 35, and a plurality of movable wiring terminals 33 are arranged in one-to-one correspondence with the plurality of grooves 35. The bridge connection device is mainly used for realizing bridging of the power supply of the micro thruster and a communication cable; adding gallium indium tin liquid alloy into the fixed liquid box 31, and communicating the fixed wiring terminal 32 and the movable wiring terminal 33; in addition, a plurality of groups of micro silicone rubber tubes are adopted to realize gas path bridging, so that the influence of gas supply on a measurement result is effectively reduced.
The high-precision displacement sensor 4 converts the micro displacement of the measuring bench 2 into an electric signal by adopting the coaxial laser interference high-precision displacement sensor 4. In the present embodiment, the high-precision displacement sensor 4 is fixed to the side of the upper strut 14 or below the base upper plate 15, and the direction of measurement (probe orientation) hits the link 23.
The standard force device and electromagnetic damper 5 comprises a permanent magnet fixing piece 51, two solenoid coils 52, two permanent magnets 53, two solenoid coils 54, two six-degree-of-freedom manual displacement tables 55 and two bottom plate fixing pieces 56; one set of permanent magnet 53, solenoid coil 54, six-degree-of-freedom manual displacement table 55 and bottom plate fixing piece 56 form a standard force device, the other set of permanent magnet 53, solenoid coil 54, six-degree-of-freedom manual displacement table 55 and bottom plate fixing piece 56 form an electromagnetic damper, the structures of the two sets are completely consistent, and the two sets can be used as the standard force device and also can be used as the electromagnetic damper simultaneously; the standard force device is mainly used for calibrating the measuring rack 2 and determining the rigidity coefficient of the measuring rack 2; the electromagnetic damper is used to achieve a fast steady-state measurement of the measuring bench 2. Specifically, the permanent magnet fixing member 51 is fixed below the link lever 23; the base plate fixing piece 56 is fixed on the base lower plate 13, the six-degree-of-freedom manual displacement table 55 is vertically arranged on the base plate fixing piece 56, the solenoid coil 52 is arranged on the top of the six-degree-of-freedom manual displacement table 55, the solenoid coil 54 is arranged at one end of the spool coil fixing piece, which faces the permanent magnet fixing piece 51, the permanent magnet 53 is arranged at one side of the permanent magnet fixing piece 51, which faces the spool coil fixing piece, and the permanent magnet 53 corresponds to the solenoid coil 54.
The components are as follows: the rack base 1 is used for installing and fixing other parts and has the functions of shock insulation and interference resistance; the measuring bench 2 converts the thrust signal of the micro thruster into a displacement signal which can be directly measured; the cable bridging device 3 supplies power for the micro thruster; the high-precision displacement sensor 4 is used for measuring displacement signals and converting the displacement signals into electric signals to be transmitted to measurement and control software; the standard force device and the electromagnetic damper 5 are used for calibrating torsion pendulum, constructing the relation between electromagnetic force and displacement, and simultaneously applying variable electromagnetic damping, so that the measuring rack 2 can be quickly stabilized; in addition, displacement information can be converted into thrust information through measurement and control software, the automatic measurement and control functions of the micro thrust measurement system signal are realized, and the functions of real-time data processing, display, storage and the like are provided.
When the device is used, the rack base 1 is horizontally fixed in the vacuum tank so as to keep the horizontal installation of the thruster and reduce the interference of the surface vibration noise on the measurement result; the measuring bench 2 is arranged on the bench base 1, 8 flexible pivots 25 are adopted by the measuring bench 2 to form a parallelogram swing arm 24, so that the movement of the torsion pendulum in five degrees of freedom except the sensitive degree of freedom is limited, the anti-interference capability and the load carrying capability of the measuring device are improved, the accurate measurement of the thrust can be realized without precisely adjusting the mass center of the measuring bench 2, and the working efficiency is greatly improved; the cable bridging device 3 mainly solves the power supply and communication problems of the micro thruster and realizes zero-rigidity and low-damping cable bridging; meanwhile, the silicone rubber hose is adopted to realize the bridging of the micro-thruster air path, and the additional rigidity of the silicone rubber hose can be calibrated through calibration; when the micro thruster generates horizontal thrust, the linkage rod 23 connected with the two swing arms 24 generates micro displacement, and the micro displacement signal can be converted into an electrical signal which can be processed by the measurement and control system through the high-precision displacement sensor 4; the thruster to be measured is horizontally arranged on the thruster mounting platform 21, and the torsion pendulum is precisely calibrated by using the standard thruster and the electromagnetic damper 5 before measuring the micro thruster, so that the relation between the displacement and the standard force is obtained, and the thrust generated by the thruster to be measured is inverted based on the relation.
In the measuring process, firstly, a thruster is required to be installed in the atmospheric environment, and the thrust direction of the thruster is confirmed to be parallel to the measuring direction; connecting a thruster cable and a pipeline, preliminarily testing whether power supply, air supply, communication and the like of the thruster are normal, starting to debug the torsion pendulum device after the preliminary test is finished, modulating the positions of the center of mass and the measuring rack 2 to a proper interval, running measurement and control software, and checking the effectiveness of each functional module of the torsion pendulum; after the detection work is completed, vacuumizing is started, after the vacuum degree meets the working condition of the thruster to be detected, the torsion pendulum is effectively calibrated for 3 times, and then the aerodynamic force, the electrostatic force and the magnetic force of the thruster to be detected are calibrated in sequence; and then the thruster to be tested starts to work in ignition and enters a thrust direct measurement state.
Direct measurement of thrust is divided into two modes, namely an open loop mode and a closed loop mode. The open loop mode is to firstly calibrate the torsion pendulum by using a standard force device to obtain the relation between displacement and standard force, when the thruster to be tested generates effective thrust, the torsion pendulum generates micro deflection displacement, and the displacement is detected and substituted into the relation to obtain the thrust generated by the thruster to be tested; the closed loop mode is a zero control mode directly developed by using the standard force device, when the to-be-tested thruster generates effective thrust to push the torsion pendulum to deflect, the standard force device generates reverse thrust to prevent the torsion pendulum from deflecting, the torsion pendulum is finally balanced in a zero displacement state through repeated closed loop control, and the standard force output by the standard force device is equal to the generated thrust of the to-be-tested thruster.
The vertical torsional pendulum high-precision micro-thrust measuring device provided by the embodiment has the following advantages:
1. by adopting the parallelogram vertical torsion pendulum structure, decoupling of the dead weight of the thruster and the thrust to be measured can be realized, meanwhile, the measuring error of the moment arm is effectively eliminated, and the measuring precision of the thrust is improved;
2. 8 friction-free flexible pivots 25 are adopted, so that the movement of the torsion pendulum in five degrees of freedom except the sensitive degree of freedom is limited, the anti-interference capacity and the load capacity of the measuring device are effectively improved, accurate measurement of thrust can be realized without precisely adjusting the mass center of the measuring rack 2, and the assembling and debugging process of the micro-thruster is greatly simplified;
3. the heat insulation support column 22 is adopted to reduce the influence of heat conduction of the micro-thruster on the thrust measurement rack 2, and meanwhile, aluminum foil is further coated to reduce the influence of aerodynamic force and heat radiation of the micro-thruster on the measurement rack 2;
4. by adjusting the center of mass (referring to the mass of the adjusting weight 26) or replacing the pivot 25, a variety of thrust measurement ranges can be realized, covering the micro-to milli-newton-level thrust measurement needs.
While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (9)
1. The utility model provides a vertical torsion pendulum high accuracy micro thrust measuring device which characterized in that includes:
a rack base with shock insulation and anti-interference effects;
the measuring rack is arranged on the rack base and is used for installing a micro thruster and converting the thrust of the micro thruster into a micro displacement capable of being directly measured;
the cable bridging device is arranged on the rack base and is used for realizing power supply and communication of the micro thruster in a bridging mode so as to reduce the influence of cables;
a high-precision displacement sensor mounted on the stage base for converting a minute displacement of the measurement stage into an electrical signal;
the standard force device and the electromagnetic damper are arranged on the stand base and are used for calibrating the measuring stand, determining the rigidity coefficient of the measuring stand and realizing the rapid steady-state measurement of the measuring stand.
2. The vertical torsional pendulum high-precision micro-thrust measuring device of claim 1, wherein the bench base comprises a base upper plate, a base lower plate, an upper strut, a lower strut and a shock-insulating rubber pad; the base upper plate and the base lower plate are horizontally arranged, and the base upper plate is arranged above the base lower plate at intervals; the upper support rods are arranged in a plurality and supported between the base upper plate and the base lower plate; the plurality of lower support rods are arranged and fixed at the bottom of the base lower plate; the lower end of each lower supporting rod is respectively provided with one vibration isolation rubber pad.
3. The vertical torsional pendulum high-precision micro-thrust measuring device of claim 2, wherein the measuring bench comprises a linkage rod, a pivot, a swing arm, a heat insulation support, a thruster mounting platform and a counterweight; the linkage rod is horizontally arranged and is rotatably connected with the upper end of the swing arm through the pivot; the lower end of the swing arm is rotatably connected with the base upper plate through the pivot; the upper base plate is provided with a column penetrating hole, the lower end of the heat insulation support column is fixed on the linkage rod, the upper end of the heat insulation support column penetrates through the column penetrating hole and then is exposed above the upper base plate, and the diameter of the column penetrating hole is larger than that of the heat insulation support column; the thruster mounting platform is fixed at the upper end of the heat insulation support; the counterweight is detachably fixed below the base lower plate, and the mass of the counterweight is adjustable.
4. The vertical torsional pendulum high-precision micro-thrust measuring device according to claim 3, wherein a plurality of linkage rods are arranged, a plurality of swing arms are respectively pivoted below each linkage rod, and a plurality of heat insulation struts are respectively fixed above each linkage rod; the plurality of linkage rods are arranged in parallel, the plurality of swing arms are arranged in parallel, the axes of the plurality of pivots are parallel or coincident, and the plurality of heat insulation struts are arranged in parallel.
5. The vertical torsional pendulum high-precision micro-thrust measuring device according to claim 3, wherein the cable bridging device comprises a fixed liquid box, a fixed binding post, a binding post fixing piece and a movable binding post; the fixed liquid box is fixed above the base upper plate, and a plurality of grooves are formed in the top of the fixed liquid box; the side part of the fixed liquid box is provided with the fixed wiring terminals, the inner ends of the fixed wiring terminals extend into the grooves, and each groove at least corresponds to one fixed wiring terminal; one end of the binding post fixing piece is fixed on the thruster mounting platform, and the other end of the binding post fixing piece is provided with a plurality of movable binding posts; the lower ends of the movable wiring terminals extend into the grooves, and a plurality of the movable wiring terminals are arranged in one-to-one correspondence with a plurality of the grooves.
6. The vertical torsional pendulum high-precision micro-thrust measuring device of claim 3, wherein the high-precision displacement sensor adopts a coaxial laser interference high-precision displacement sensor.
7. The vertical torsional high precision micro thrust measuring device according to claim 3, wherein the standard force device and the electromagnetic damper comprise at least one permanent magnet fixing piece, at least one set of standard force device and at least one set of electromagnetic damper; the permanent magnet fixing piece is fixed below the linkage rod; the standard force device and the electromagnetic damper comprise a bottom plate fixing piece, a six-degree-of-freedom manual displacement table, a solenoid coil fixing piece, a solenoid coil and a permanent magnet, wherein the bottom plate fixing piece is fixed on a lower base plate, the six-degree-of-freedom manual displacement table is vertically arranged on the bottom plate fixing piece, the solenoid coil fixing piece is arranged at the top of the six-degree-of-freedom manual displacement table, the solenoid coil is arranged at one end of the spool coil fixing piece, which faces the permanent magnet fixing piece, the permanent magnet is arranged at one side of the permanent magnet fixing piece, which faces the spool coil fixing piece, and the permanent magnet corresponds to the solenoid coil.
8. A vertical torsional pendulum high precision micro thrust measuring device according to claim 3, characterized in that the space between the base upper plate and the base lower plate is clad with aluminum foil on the peripheral side.
9. The vertical torsional pendulum high-precision micro-thrust measuring device according to claim 1, wherein the air channel of the micro-thruster adopts a plurality of groups of micro-silicone rubber tubes to realize air channel bridging so as to reduce air channel influence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311327773.6A CN117268611A (en) | 2023-10-13 | 2023-10-13 | Vertical torsional pendulum high-precision micro-thrust measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311327773.6A CN117268611A (en) | 2023-10-13 | 2023-10-13 | Vertical torsional pendulum high-precision micro-thrust measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117268611A true CN117268611A (en) | 2023-12-22 |
Family
ID=89210387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311327773.6A Pending CN117268611A (en) | 2023-10-13 | 2023-10-13 | Vertical torsional pendulum high-precision micro-thrust measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117268611A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2903956Y (en) * | 2006-03-10 | 2007-05-23 | 中国科学院力学研究所 | Low-turbulent gas supply pipe for micro-pushing force tester |
| CN105784237A (en) * | 2016-05-13 | 2016-07-20 | 中国科学院力学研究所 | Micro thrust test system and method |
| CN114152380A (en) * | 2021-11-23 | 2022-03-08 | 华中科技大学 | Quick-response second-stage pendulum device for micro-Newton thrust test |
| CN114216688A (en) * | 2021-11-12 | 2022-03-22 | 南京航空航天大学 | Thrust measuring device of miniature turbine engine |
| CN115165295A (en) * | 2022-07-13 | 2022-10-11 | 中国空气动力研究与发展中心超高速空气动力研究所 | Micro-pneumatic load measuring device and application method thereof |
| CN115290239A (en) * | 2022-07-31 | 2022-11-04 | 天津大学 | Tiny propulsive force measuring device and method based on parallelogram elastic mechanism |
| CN116124344A (en) * | 2023-01-04 | 2023-05-16 | 中国科学院力学研究所 | Micro-thrust measuring device based on Roberval balance structure |
-
2023
- 2023-10-13 CN CN202311327773.6A patent/CN117268611A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2903956Y (en) * | 2006-03-10 | 2007-05-23 | 中国科学院力学研究所 | Low-turbulent gas supply pipe for micro-pushing force tester |
| CN105784237A (en) * | 2016-05-13 | 2016-07-20 | 中国科学院力学研究所 | Micro thrust test system and method |
| CN114216688A (en) * | 2021-11-12 | 2022-03-22 | 南京航空航天大学 | Thrust measuring device of miniature turbine engine |
| CN114152380A (en) * | 2021-11-23 | 2022-03-08 | 华中科技大学 | Quick-response second-stage pendulum device for micro-Newton thrust test |
| CN115165295A (en) * | 2022-07-13 | 2022-10-11 | 中国空气动力研究与发展中心超高速空气动力研究所 | Micro-pneumatic load measuring device and application method thereof |
| CN115290239A (en) * | 2022-07-31 | 2022-11-04 | 天津大学 | Tiny propulsive force measuring device and method based on parallelogram elastic mechanism |
| CN116124344A (en) * | 2023-01-04 | 2023-05-16 | 中国科学院力学研究所 | Micro-thrust measuring device based on Roberval balance structure |
Non-Patent Citations (2)
| Title |
|---|
| HAIBO WANG等: "Measurement and Prediction of Micronewton Class Thrust of Electric Propulsion Based on the Torsional Pendulum and Machine Learning Technique", IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, vol. 72, 28 November 2022 (2022-11-28), pages 2 * |
| UGUR KOKAL等: "Development and tests of a thrust stand with an in-situ null position adjustment and calibration method for low power plasma thrusters", RESULTS IN ENGINEERING, no. 18, 8 June 2023 (2023-06-08) * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5411361B2 (en) | Test bench including a device for calibrating a force measuring device | |
| CN209927946U (en) | Static and dynamic driving characteristic comprehensive tester for electric control shape memory alloy wire | |
| CN113701934B (en) | Torsional pendulum type micro-thrust measuring device and method | |
| CN102749520A (en) | Multichannel high-precision thermal resistance breadboard based on extensions for instrumentation (PXI) bus | |
| CN108106812A (en) | A kind of dynamometric system for thrust calibration | |
| CN108120477A (en) | Suitable for the hot line wind speed and direction measuring system of low-temp low-pressure environment | |
| CN117268611A (en) | Vertical torsional pendulum high-precision micro-thrust measuring device | |
| CN115165295A (en) | Micro-pneumatic load measuring device and application method thereof | |
| CN113740929B (en) | Ground testing device and method for space inertial sensor | |
| CN202599568U (en) | Output resistor suitable for platinum resistance thermometer sensor analog board | |
| CN116124344B (en) | Micro-thrust measuring device based on Roberval balance structure | |
| CN111103090A (en) | Torque calibration device of steering engine test system | |
| CN112504534A (en) | Vertical pendulum type micro thrust test board device, calibration method and weak force test method | |
| CN114136624B (en) | Direction-adjustable thrust measurement rack center loading calibration device | |
| CN114624473A (en) | Closed-cycle probe station | |
| CN114235246B (en) | Gravity method micro-thrust measuring device and pipeline stress interference eliminating method thereof | |
| CN109932599B (en) | Comprehensive tester for static and dynamic driving characteristics of electric control shape memory alloy wire | |
| CN114486029B (en) | Cantilever type micro-thrust measurement system and electromagnetic standard force calibration method thereof | |
| CN113639954B (en) | Model inclination angle measuring device suitable for 1-meter-scale high-speed wind tunnel test | |
| CN110307776A (en) | A kind of thickness measuring method of hole face copper integration measuring thickness device and five terminal micrometer resistance | |
| CN115855477A (en) | Device and method for testing robot joint performance | |
| CN114216688A (en) | Thrust measuring device of miniature turbine engine | |
| CN110442115B (en) | Adjustable test meter pen fixing clamp for testing digital instrument control system of nuclear power plant | |
| CN215639882U (en) | Vertical pendulum-type micro thrust test bench device | |
| CN114235251B (en) | Device for measuring thrust of plasma thruster under vacuum |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240312 Address after: 101407 room 208, 2nd floor, building 13, yard 53, Yanqi street, Yanqi Economic Development Zone, Huairou District, Beijing (cluster registration) Applicant after: Zhongkexing Power (Beijing) Technology Co.,Ltd. Country or region after: China Applicant after: INSTITUTE OF MECHANICS, CHINESE ACADEMY OF SCIENCES Address before: 101407 room 208, 2nd floor, building 13, yard 53, Yanqi street, Yanqi Economic Development Zone, Huairou District, Beijing (cluster registration) Applicant before: Zhongkexing Power (Beijing) Technology Co.,Ltd. Country or region before: China |
|
| TA01 | Transfer of patent application right |