CN2534560Y - Molecular liquid ring type angular accelerometer - Google Patents
Molecular liquid ring type angular accelerometer Download PDFInfo
- Publication number
- CN2534560Y CN2534560Y CN 02208601 CN02208601U CN2534560Y CN 2534560 Y CN2534560 Y CN 2534560Y CN 02208601 CN02208601 CN 02208601 CN 02208601 U CN02208601 U CN 02208601U CN 2534560 Y CN2534560 Y CN 2534560Y
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- ring
- converter
- liquid
- compensator
- solvent
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Abstract
A molecular liquid-circulation angular accelerometer, based on the theory of liquid electric double layer and electrokinetics, is used to sensitively input the angular acceleration input signal in axial direction and output the electric signal in direct proportion to the angular acceleration signal. The utility model mainly includes a liquid ring and a magnifier; the liquid ring, as the core part, consists of a ring, a solvent compensator and a hydraulic medium as well as a plurality of tiny hole converters and electric poles distributed on the surface; the hydraulic medium is filled in the ring; the internal ring of the ring is connected with the solvent compensator and communicated with a capillary; the converter is embedded in the ring and both sides of the converter are respectively attached by a ring-shaped or net-shaped electric pole; the electric pole is connected with the magnifier. The utility model has the characteristics of simple structure, light weight, convenient installation, short preparation period, no any mechanical rotating component and pole measurement of follow-up system and the advantages of control reliability improvement and anti-jamming performance.
Description
Technical field
The utility model relates to a kind of angular accelerometer, a kind of molecule-type liquid-ring angular accelerometer that particularly utilizes liquid electrostatic double layer theory and electrokinetics theory to develop.
Background technology
At present, in Aeronautics and Astronautics and other field, the test angles acceleration signal normally the output data of rate gyro is carried out electronics or the electromagnetism differential obtains, but the quality of this mode picked up signal or reliability are relatively poor.In addition, also have and adopt several linear accelerometers to measure the scheme that obtains angular acceleration signal again through information processing, this method testing complex, and cost an arm and a leg.And the angular accelerometer of direct responsive angular acceleration signal is not found as yet.
The utility model content
Technology of the present utility model is dealt with problems and is: provide a kind of small-sized, light, good reliability, highly sensitive, molecule-type liquid-ring formula angular accelerometer direct and only responsive angular acceleration signal.
Technical solution of the present utility model is: the characteristics of molecule-type liquid-ring angular accelerometer are: utilize liquid electrostatic double layer theory and electrokinetics theory, be used for the axial angular acceleration input signal of responsive input, and the electric signal that is directly proportional with this angular acceleration signal of output, this angular accelerometer is made up of pendular ring and amplifier, wherein pendular ring comprises ring, the solvent compensator, hydraulic fluid, be distributed with the converter and the electrode of micro-pore on it, hydraulic fluid is filled in the ring, the interior ring of ring is connected with the solvent compensator, and be connected by a kapillary, converter is embedded in the ring, electrode is equipped with in the converter both sides, and electrode is connected with amplifier.
In electricity field, there is a kind of electrokinetic phenomena to claim electrokinetic potential effect (also claiming " Quincke " effect), promptly when liquid flows by porous material, produce potential difference (PD) at the two ends of porous mass.Principle of work of the present utility model is exactly to be based upon on the basis of above-mentioned effect: the hydraulic fluid in the pendular ring is as inertial mass during with respect to transducer motion, mobile transfer " converter-liquid " electric charge at the interface of liquid, because " Quincke " effect, the inertia motion of liquid directly is converted to and the corresponding electric signal of angular acceleration signal.Most of materials contact with polarizable medium (for example water, acetone etc.), electric charge all can be with in their surface, the charged distribution that influences the electric charge in the near surface hydraulic fluid of solid surface on solid-liquid interface, homocharge is repelled each other, heterocharge is inhaled mutually, form the trend that is separated from each other of electric charge, simultaneously, thermal motion makes two kinds of charge-restorings to even mixing trend, under the combined action of two kinds of opposite tendency, superfluous heterocharge will be distributed in the mode of diffusion near the powered surfaces the polarizable medium, thereby form electrostatic double layer at the powered surfaces place.When hydraulic fluid was full of the capillary-size pore of converter, Partial charge was connected with solid is non-rigid in the electrostatic double layer of formation, is kept in motion, and caused existing in being full of the converter hole of hydraulic fluid a large amount of residue one pole charged ions.When the effect of being under pressure of liquid in the angular accelerometer pendular ring forms when flowing by converter, the liquid that these ion passive movements drives, in kapillary, form electron ion stream, by recharging of electrochemical reaction on the electrode or two-layer electrode electric capacity, this ion flow changes metallic current into, this electric current is through magnitude of voltage of pull-up resistor output of prime amplifier, and like this, the angular acceleration that adds and the voltage of output have just produced gets in touch.
The utility model is compared (as differential expression machinery electromagnetism class angular accelerometer) with other type angular accelerometer, have following characteristics:
A. simple in structure, in light weight, there is not any mechanical component;
B. bandwidth, sensitivity is also better in low-frequency range;
C. to the cross-couplings of vertical direction less than 1%, insensitive to linear acceleration, and easy for installation;
D. setup time lacks, and only is 5s;
E. can measure the servomechanism change in polarity, other instrument can't substitute;
F. do not have accurate machine and add part, mechanical part is few, nonmagnetic substance, so reliability height, and antijamming capability is strong.
G. adopt the angular accelerometer life-span of this structure fabrication long, be difficult for losing efficacy.
Description of drawings
Fig. 1 is the pendular ring structural representation of utility model;
Fig. 2 is the utility model fundamental diagram,
Fig. 3 is the equivalent circuit diagram of electro-chemical systems in the utility model;
Fig. 4 is an amplifying circuit schematic diagram in the utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
As shown in Figure 1, 2, the utility model embodiment is made of pendular ring and amplifier, pendular ring comprises hydraulic fluid 1, ring 2, solvent compensator 4, electrode 5 and converter 6, the material of ring 2 and solvent compensator 4 is to be made by glass or metal (as stainless steel etc.), it links together by the mode of clinkering or welding each other, and be connected with a capillary 3, being full of hydraulic fluid 1 in the ring 2, hydraulic fluid 1 is made up of organic solvents such as adding toluene in acetone or the acetone; When temperature changes, the volume of hydraulic fluid 1 changes, by interconnecting of liquid in liquid in the kapillary 3 realization rings 2 and the solvent compensator 4, fill up the volume change (capillary inner diameter is very little, and bubble can't enter in the ring 2) of liquid in the ring 2 that produces because of variation of temperature.In ring 2, inlaying a slice converter 6, converter 6 is to be formed by insulating material sintering such as silicate glass or oxide ceramics, a large amount of capillary-size pore that distributing, its inside, the ring-like or netted platinum electrode 5 of an opening respectively is close in converter 6 both sides, and this electrode 5 is connected with amplifier.
When hydraulic fluid 1 is full of the capillary-size pore of converter 6, on the interface of converter 6 and hydraulic fluid 1 because alternate charge separation produces electrostatic double layer, Partial charge and 6 non-rigid connections of converter in the electrostatic double layer, be kept in motion, cause in being full of the converter of hydraulic fluid, having a large amount of residue one pole charged ions in the capillary-size pore, thereby hydraulic fluid forms polarity.When converter 6 is passed through in the effect of being under pressure of hydraulic fluid 1 in the utility model pendular ring 2, the polar liquid that these ion passive movements drives, in kapillary, form ion flow, by the electrochemical reaction on the electrode 5, this ion flow changes metallic current into, and this electric current is through the pull-up resistor output voltage values of amplifier.
As shown in Figure 3, the process of electro-chemical systems can be described with circuit diagram, be the double-layer capacitance charge and discharge process of electrode surface in the realization, promptly the ion flow that residue one pole charged ion forms because of flowing in the capillary-size pore of converter 6 converts this process of electric current of lead to by the electrochemical reaction of electrode.
As shown in Figure 4, amplifier circuit mainly is made up of operational amplifier amp and peripheral circuit thereof, its function comprises feedback amplification and temperature compensation, considers the factor of noise, and operational amplifier amp can choose fet integrated transporting discharging and bipolarity triode integrated transporting discharging.The purpose of temperature compensation is to cause the electrode variation of output signals to varying with temperature because of hydraulic fluid, and the sensitive characteristic of choosing triode is used as temperature compensator.Entire circuit is to take the thinking of T type network.
Claims (4)
1, molecule-type liquid-ring angular accelerometer, it is characterized in that: form by pendular ring and amplifier, pendular ring comprises ring, solvent compensator, hydraulic fluid, the converter that is distributed with micro-pore on it and electrode, hydraulic fluid is filled in the ring, the interior ring of ring is connected with the solvent compensator, and is connected by a kapillary, and converter is embedded in the ring, electrode is equipped with in the both sides of converter, and electrode is connected with amplifier.
2, molecule-type liquid-ring angular accelerometer according to claim 1 is characterized in that: ring and solvent compensator are made by glass or metal.
3, molecule-type liquid-ring angular accelerometer according to claim 1 is characterized in that: hydraulic fluid constitutes by adding toluene organic solvent in acetone or the acetone.
4, molecule-type liquid-ring angular accelerometer according to claim 1 is characterized in that: the converter that has micro-pore is formed by silicate glass or oxide ceramic insulating material sintering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02208601 CN2534560Y (en) | 2002-04-03 | 2002-04-03 | Molecular liquid ring type angular accelerometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02208601 CN2534560Y (en) | 2002-04-03 | 2002-04-03 | Molecular liquid ring type angular accelerometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2534560Y true CN2534560Y (en) | 2003-02-05 |
Family
ID=33689238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02208601 Expired - Fee Related CN2534560Y (en) | 2002-04-03 | 2002-04-03 | Molecular liquid ring type angular accelerometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2534560Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107144706A (en) * | 2017-06-28 | 2017-09-08 | 北京理工大学 | A kind of polycyclic pendular ring angular accelerometer |
-
2002
- 2002-04-03 CN CN 02208601 patent/CN2534560Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107144706A (en) * | 2017-06-28 | 2017-09-08 | 北京理工大学 | A kind of polycyclic pendular ring angular accelerometer |
| CN107144706B (en) * | 2017-06-28 | 2020-08-11 | 北京理工大学 | Multi-ring liquid ring angle accelerometer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |