CN109573055B - Application method of plasma-based icing sensing and deicing prevention integrated device - Google Patents
Application method of plasma-based icing sensing and deicing prevention integrated device Download PDFInfo
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- CN109573055B CN109573055B CN201811411227.XA CN201811411227A CN109573055B CN 109573055 B CN109573055 B CN 109573055B CN 201811411227 A CN201811411227 A CN 201811411227A CN 109573055 B CN109573055 B CN 109573055B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D15/00—De-icing or preventing icing on exterior surfaces of aircraft
- B64D15/12—De-icing or preventing icing on exterior surfaces of aircraft by electric heating
Abstract
The invention provides an icing sensing and anti-icing integrated device based on plasma, which relates to the technical field of plasma icing sensing and anti-icing integration, and aims to solve the problem of poor working accuracy of icing sensing and anti-icing caused by detection and working of different instruments in the prior art, and comprises a power supply for providing different voltage environments for an exciter, wherein the power supply comprises a low-voltage unit and a high-voltage unit which are arranged in parallel; the device also comprises a voltage detector and/or a current detector for detecting the voltage at two ends of the exciter and/or the current passing through the exciter; the power supply, the voltage detector and/or the current detector are both communicated with the central processing analysis and control unit. According to the invention, the voltage and/or current at two ends of the exciter are/is monitored, and the low-voltage unit and the high-voltage unit are switched, so that the icing sensing and deicing operation and the fixed-point icing sensing and deicing operation are integrated, and the accuracy is improved.
Description
Technical Field
The invention relates to the technical field of plasma icing sensing and deicing prevention integration, in particular to an icing sensing and deicing prevention integrated device based on plasma and a using method thereof.
Background
The airplane is the most common fixed-wing aircraft, which greatly facilitates the traveling of people, and in order to improve the traveling safety of people, adverse factors influencing the flight safety need to be eliminated, wherein the icing of the airplane is one of six factors which are defined by the aviation boundary and influence the flight safety; when the airplane flies in high altitude, water vapor can be frozen on the surface of the wings of the airplane at low temperature, so that the aerodynamic performance and the operational performance of the wings of the airplane flying in the air are influenced, and even the operation of the airplane is failed in severe cases, so that the airplane is damaged and people die.
In order to solve the above problems, it is necessary to prevent and eliminate the icing area on the surface of the aircraft, and the current methods applied to prevent and remove the ice on the aircraft include: the device comprises hot gas deicing, electric heating deicing, air bag deicing and anti-icing liquid deicing, wherein the hot gas deicing is complex in structure, the electric heating deicing is high in energy consumption, the air bag deicing is not effective when the icing is too thick, and the anti-icing liquid efficiency is limited; therefore, in recent years, plasma has been emerging as a new deicing method with a simple structure and low energy consumption.
The Chinese patent with publication number CN106314800A discloses an ice breaking and removing method based on plasma impact jet, wherein a plasma exciter and an icing detector are arranged in an easily icing area with an object surface of the easily icing area, the plasma exciter and the icing detector are both connected with a controller, when the icing detector detects that the object surface of the easily icing area is iced, the controller controls the plasma exciter at the easily icing area to work, controls the discharge power, the frequency and the working time of the plasma exciter, and utilizes the generated periodic high-temperature high-dynamic-pressure jet to impact the ice layer to rapidly vibrate, deform and crack, even directly break and melt the ice layer to break ice.
Although the plasma impact jet based ice breaking method discloses a mode of impacting an ice layer by using periodic high-temperature high-dynamic-pressure jet generated by a plasma exciter to realize rapid ice removal, the specific structure of the icing detector part is not detailed in the text.
At present, the icing detector on the market comprises an optical sensor, an electrical sensor and a mechanical sensor, when the icing detector is used in cooperation with a plasma exciter, although the icing detector can be arranged in an area easy to ice in a flush manner corresponding to the plasma exciter one by one, due to the non-uniformity of the positions of the icing detector and the corresponding plasma exciter, the icing sensing precision is low, and the accuracy of an icing prevention range is poor.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an icing sensing and deicing integrated device based on plasma, which has the advantages of being accurate in detection and deicing.
In order to achieve the technical purpose, the plasma-based icing sensing and deicing integrated device comprises an exciter arranged in an easily icing wing region, wherein the exciter is in a dielectric barrier discharge form, and the device also comprises a power supply for providing different voltage environments for the exciter, wherein the power supply comprises a low-voltage unit and a high-voltage unit which are arranged in parallel, and the low-voltage unit and the high-voltage unit are used independently;
the device also comprises a voltage detector and/or a current detector for detecting the voltage at two ends of the exciter and/or the current passing through the exciter;
the power supply, the voltage detector and/or the current detector are all communicated with the central processing analysis and control unit.
By adopting the technical scheme, the exciter is arranged in the easy-to-freeze area of the wing profile, the low-voltage unit is used for providing a low-voltage condition for the exciter, the exciter is connected with the voltage detector and/or the current detector, the easy-to-freeze area generates an ice layer under the low-temperature condition, the ice layer covers part of the electrodes, at the moment, data fed back to the voltage detector and/or the current detector from two ends of the exciter fluctuate, and whether the easy-to-freeze area at the exciter is frozen or not can be obtained after the data are judged by the central processing analysis and control unit; when the icing phenomenon of the easily icing area is judged, the central processing analysis and control unit controls the high-voltage unit to provide a high-voltage condition for the exciter, the exciter generates plasma with higher temperature under the high-voltage condition, and the plasma rapidly heats air flow, wing profiles and an ice layer nearby the high-voltage unit, so that the ice layer is eliminated, meanwhile, the other part of energy generated by the exciter can be converted into heat energy required by ice prevention and removal, and the ice prevention and removal efficiency and the energy utilization rate are improved; through the different states of the exciter under the low voltage condition and the high voltage condition, the voltage detector and/or the current detector are matched, the icing sensing of an area easy to ice under the low voltage condition and the anti-icing linkage under the high voltage condition are realized, the structure is simple, the energy consumption is low, the icing sensing and anti-icing work is more accurate, and the effects of fixed-point sensing and fixed-point anti-icing are achieved.
In some embodiments, the exciter comprises a covering electrode, an insulating medium and an exposed electrode which are arranged in a laminated and attached mode, wherein the covering electrode is arranged at the low-voltage output end of a power supply, and the exposed electrode is arranged at the high-voltage output end of the power supply;
the covering electrode and the exposed electrode are arranged in a mode of covering the front edge of the airfoil, and the insulating medium completely covers the covering electrode.
By adopting the technical scheme, on one hand, the covering electrode and the exposed electrode are coated on the front edge of the airfoil which is easy to freeze, so that the icing sensing and deicing effects are improved, and on the other hand, the insulating medium which completely covers the covering electrode can ensure that the surfaces of the covering electrode, the exposed electrode and the airfoil cannot creep, so that the normal work of the exciter is influenced.
In some embodiments, the cover electrode is in a sheet-like configuration having a length of 75mm, a width of 72mm, and a thickness of 0.1 mm;
the thickness of the insulating medium is 0.3 mm;
exposed electrode is netted setting, and it includes 6 long 65mm, wide 2mm, thick 0.1mm, along the chord to electrode strip and 2 long 62mm, wide 2mm, thick 0.1mm of chord to the cladding setting, along the exhibition to the electrode strip that sets up, the chord is to the electrode strip along the exhibition of airfoil leading edge to the interval setting, and its interval is 10mm, two the exhibition is located the both ends of chord to electrode strip subsides, just exposed electrode area of enclosing is 65 x 62mm2。
By adopting the technical scheme, the exciter has small coverage area, concentrated energy and small power consumption on a power supply, and meanwhile, a plurality of exciters can be separately connected in series and laid in an area easy to freeze, so that the icing sensing and deicing prevention of the exciter are well combined.
In some embodiments, the power supply is a high voltage pulsed power supply.
By adopting the technical scheme, the low-voltage condition and the high-voltage condition are converted by the high-voltage pulse power supply, the response time difference and the energy loss caused by the switching of different power supply equipment are reduced, the structure of the power supply is simplified, and the control and the use are convenient.
In some embodiments, the output voltage range of the low voltage unit is 8-10kv, the modulation frequency range is 50-300Hz, the pulse rising edge is 150ns, the pulse width is 100ns, and the falling edge is 150 ns.
By adopting the technical scheme, on the premise of ensuring the normal work of the exciter, under the condition of low voltage, the working voltage, the frequency and the pulse time are small, and the icing condition is sensed in real time by matching with the voltage detector and/or the current detector, so that the energy consumption is reduced.
In some embodiments, the output voltage range of the high voltage unit is 10-16kv, the modulation frequency range is 2000-.
By adopting the technical scheme, under the condition of high voltage, the working voltage, the frequency and the pulse time are large, heat is released, an ice layer generated at the part easy to freeze is eliminated, and the flight safety is ensured.
In some embodiments, the voltage detector and/or the current detector comprises a voltage probe and/or a current probe for monitoring a voltage signal and/or a current signal at two ends of the exciter, and further comprises an oscilloscope for collecting information of the voltage probe and/or the current probe, wherein the oscilloscope is connected to the central processing analysis and control unit through an optical fiber.
By adopting the technical scheme, the voltage probe and/or the current probe are arranged at two ends of the exciter, the exciter keeps a power-on state under a low voltage condition, the voltage and/or the current at the two ends of the exciter keeps a basically stable state, and after the icing phenomenon occurs, the voltage probe and/or the current probe can immediately detect the change of the voltage and/or the current at the exciter and display the change on the oscilloscope in real time, so that the oscilloscope is used for collecting data measured by the voltage probe and/or the current probe, the data is rapidly transmitted to the central processing analysis and control unit by using the optical fiber, and then the comparison judgment and the real-time control are carried out.
In some embodiments, the central processing analysis and control unit is connected with an alarm.
Adopt above-mentioned technical scheme, the alarm that intercommunication central processing analysis and the control unit set up can discharge at central processing analysis and control unit and judge that the wing section part appears icing the phenomenon after triggering passively, not only can arouse staff's attention, makes the staff can know the flight situation immediately, can also make things convenient for the staff to give the instruction in real time to central processing analysis and control unit, accurate deicing.
The invention also provides a use method of the plasma-based icing sensing and deicing integrated device, which has the advantages of deicing integration and deicing accuracy.
A use method of an icing sensing and deicing integrated device based on plasma comprises the following steps:
s1: collecting original data, selecting and building corresponding experimental equipment, selecting a corresponding experimental carrier according to an exciter, namely a carrier to be applied, attaching the exciter to the experimental carrier, providing output voltage for two ends of the exciter by respectively utilizing a low-voltage condition parameter and a high-voltage condition parameter set by a high-voltage pulse power supply under the conditions of low temperature and no ice, measuring a voltage and/or current oscillogram under the temperature condition, and storing the voltage and/or current oscillogram and amplitude and peak parameter data of the voltage and/or current into a central processing analysis and control unit to serve as the original data;
s2: attaching an exciter to an easily-frozen area of a carrier, controlling a high-voltage pulse power supply to continuously provide a low-voltage condition for the exciter through a central processing analysis and control unit, detecting voltage and/or current changes at the exciter by using voltage probes and/or current probes arranged at two ends of the exciter, feeding data back to the central processing analysis and control unit through an optical fiber after an oscilloscope collects and displays the measured single pulse voltage and/or current waveforms in real time, and comparing the collected data with corresponding original data in real time through the central processing analysis and control unit;
s3: when the measured data is compared with the corresponding original data, the change of the discharge form of the exciter and the reduction of the voltage and/or the current are obtained, the central processing analysis and control unit judges that the icing phenomenon occurs on the surface of the carrier, and an alarm is triggered; when the discharge form, voltage and/or current of the exciter obtained by comparison are basically consistent with the original data, the central processing analysis and control unit judges that the surface of the carrier is free of icing phenomenon, and continuously controls the high-pulse power supply to keep low-voltage output;
s4: after receiving the alarm signal, the pilot sends an anti-icing command to the central processing analysis and control unit, and the central processing analysis and control unit controls the high-voltage pulse power supply to provide a high-voltage condition for the exciter according to set parameters so as to perform anti-icing work;
s5: when the measured voltage and/or current oscillogram under the high voltage condition and the amplitude and peak data of the voltage and/or current are basically consistent with the corresponding original data under the ice-free environment, the central processing analysis and control unit judges that the deicing is finished and controls the power supply parameters of the high pulse power supply to be adjusted to the parameters under the condition of closing or low voltage.
By adopting the technical scheme, firstly, the exciter is arranged on an experiment carrier by utilizing an environment simulation experiment, and the voltage and/or current conditions of the exciter under the low-voltage condition are respectively collected under the low-temperature ice-free environment and are taken as original data, so that the comparison work of a central processing analysis and control unit is facilitated; the exciter is arranged in an easily icing area of the carrier, icing sensing under low voltage and deicing work under high voltage are realized through switching between low voltage and high voltage, voltage and/or current of the exciter can be monitored through the cooperation of the voltage probe and/or the current probe and the oscilloscope, communication feedback between the oscilloscope and the central processing analysis and control unit can be used for realizing switching between low voltage conditions and high voltage conditions through the oscilloscope and the central processing analysis and control unit, the structure is simple, the operation is convenient, and fixed-point icing sensing and fixed-point deicing work can be realized.
In some embodiments, in S1, multiple measurements are performed according to the low-temperature environmental temperature range when the exciter is applied to the corresponding carrier, and different raw data are collected at different temperatures and stored in the central processing analysis and control unit; in S2, the temperature of the environment where the actuator is located is measured in advance, and the corresponding raw data is selected according to the temperature and compared with the acquired data in real time.
By adopting the technical scheme, the original data of the exciter at different low temperature temperatures are obtained through multiple experiments aiming at different temperatures in a low-temperature environment, so that the exciter can be conveniently applied to actual application, the original data at different temperatures are selected for comparison according to different application temperatures, and the accuracy of icing sensing and ice prevention and removal is further improved.
In summary, compared with the prior art, the invention has the following advantages:
1. the voltage and/or the current at two ends of the exciter are monitored by the voltage detector and/or the current detector, and the icing sensing and deicing operation is integrated by matching the switching of the low-voltage unit and the high-voltage unit, so that the fixed-point icing sensing and fixed-point deicing operation are realized, and the accuracy is improved;
2. by constructing an experimental environment, the voltage and/or current conditions at two ends of the exciter under the low-voltage condition and the high-voltage condition are respectively measured under the ice-free condition, so that the acquisition of original data is completed, and the central processing analysis and control unit can conveniently complete the judgment of whether the ice is formed or not according to the comparison between the data acquired in real time and the original data.
Drawings
FIG. 1 is an electrical diagram of the integrated plasma-based ice sensing and deicing apparatus of the present invention;
FIG. 2 is a flow chart of a method of using the integrated plasma-based ice sensing and deicing device of the present invention;
FIG. 3 is a diagram illustrating the use of voltage and current detectors and actuators and a central processing analysis and control unit
The flowchart in (1);
FIG. 4 is a schematic view of the overall configuration of the airfoil portion;
FIG. 5 is a sectional view taken along line A-A of FIG. 4;
fig. 6 is an enlarged view of a portion B in fig. 5.
In the figure, 0, airfoil profile; 1. an exciter; 11. covering the electrode; 12. an insulating medium; 13. exposing the electrode; 131. a chordwise electrode; 132. a spanwise electrode; 2. a power supply; 21. a low voltage unit; 22. a high voltage unit; 3. a voltage detector; 4. a current detector; 5. an oscilloscope; 6. a central processing analysis and control unit; 61. an alarm.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1:
an integrated device for sensing and preventing and removing ice based on plasma comprises an exciter 1 arranged in an easy icing area of a wing profile 0 (used for the wing profile 0 part of an aircraft and not limited to the wing profile 0 part of the aircraft and the aircraft) as shown in fig. 1, wherein the exciter 1 is in a dielectric barrier discharge mode, and meanwhile, the integrated device also comprises a power supply 2 for providing different voltage environments for the exciter 1, wherein the power supply 2 comprises a low-voltage unit 21 and a high-voltage unit 22 which are arranged in parallel as shown in fig. 2, and the low-voltage unit 21 and the high-voltage unit 22 are used independently; as shown in fig. 3, the device further comprises a voltage detector 3 and/or a current detector 4 for detecting the voltage across the exciter 1 and/or the current passing through the exciter 1 (here, the voltage detector 3 or the current detector 4 can be separately arranged at the exciter 1, and the voltage detector and the current detector 4 can also be used simultaneously, so as to improve the accuracy of the detection result; in addition, the device also comprises a central processing analysis and control unit 6, wherein the central processing analysis and control unit 6 is an integrated electronic device which is composed of an integrated circuit and used for controlling, calculating, storing and displaying, and the power supply 2 and the voltage detector 3 and/or the current detector 4 are both communicated with the central processing analysis and control unit 6.
In the prior art, the exciter 1 with the discharge form of dielectric barrier discharge is generally used as a deicing device, and a large amount of high-temperature plasma is generated at the exciter 1 by supplying high voltage, so that the air, the wing profile 0 and the ice layer around the exciter 1 are heated, and the deicing operation is realized; however, in order to reduce energy consumption and accurately remove ice, the exciter 1 needs to be matched with an icing detector for use, but the exciter 1 and the icing detector which are arranged in parallel not only have higher energy consumption, but also have poorer ice removal accuracy; therefore, the voltage and/or the current and/or the voltage and the current at the exciter 1 are/is detected by the low voltage output of the low voltage unit 21 and the voltage detector 3 and/or the current detector 4 and/or the voltage detector 3 or the circuit detector 4 which are additionally arranged at the two ends of the exciter 1, in the embodiment, the voltage detector 3 and the current detector 4 are selected for cooperative use, after the ice layer covers the part of the exciter 1, the voltage and the current at the exciter 1 are reduced, the icing phenomenon at the part can be sensed, so that the power supply 2 is switched to the high voltage unit 22 by the central processing analysis and control unit 6, the icing prevention and deicing work is carried out by utilizing the characteristic of high temperature plasma generated by the exciter 1 under the high voltage condition, the integration of the icing sensing and the deicing prevention of the exciter 1 is further realized, the position difference can be eliminated, the precision of icing sensing and ice prevention and removal is improved, the structure can be simplified, the load of the airplane is reduced, and the energy consumption is low and the energy utilization rate is high.
As shown in fig. 4 to 6, the exciter 1 with the discharge form of dielectric barrier discharge includes a covered electrode 11, an insulating medium 12 and an exposed electrode 13, which are stacked and attached, wherein the covered electrode 11 is connected to the low-voltage output terminal of the power supply 2, and the exposed electrode 13 is connected to the high-voltage output terminal of the power supply 2; here, the covered electrode 11 and the exposed electrode 13 are coated in front of the airfoil 0The edge is arranged, the insulating medium 12 is arranged to completely cover the covering electrode 11, wherein the covering electrode 11 is a sheet-shaped copper foil with the length of 75mm, the width of 72mm and the thickness of 0.1mm, the insulating medium 12 is high-pressure-resistant and high-temperature-resistant polyimide with the thickness of 0.3mm, the whole airfoil shape 0 is covered by the insulating medium, the exposed electrode 13 is arranged corresponding to the covering electrode 11 and comprises 6 chordwise electrode strips 131, 2mm and 0.1mm in length, 2mm in width, 2mm in thickness, chordwise electrode strips 131, 2mm in length, 2mm in width and 0.1mm in thickness, and spanwise electrode strips 132 arranged along the spanwise direction of the front edge of the airfoil shape 0, the chordwise electrode strips 131 are arranged at intervals along the spanwise direction of the front edge of the airfoil shape 0, the intervals are 10mm, the two spanwise electrode strips 132 are respectively attached to two ends of the chordwise electrode strips 131, and the area surrounded by the exposed electrode 13 arranged in a net shape is 65mm2。
In order to improve the switching efficiency of the low voltage unit 21 and the high voltage unit 22 of the power supply 2, here, the power supply 2 is a high voltage pulse power supply, and the low voltage of the power supply 2 under the condition of ensuring the discharge of the exciter 1 is 8-10kv, the low modulation frequency is 50-300Hz, the pulse rising edge is 150ns, the pulse width is 100-. Thus, the separately arranged high-voltage pulse power supply supplies voltage to the exciter 1, the output parameters of the high-voltage pulse power supply in the low-voltage state and the output parameters of the high-voltage pulse power supply in the high-voltage state are input in advance, and the central processing analysis and control unit 6 is used for switching the voltage output parameters, so that the switching efficiency is improved.
In order to realize data interaction between the voltage detector 3 and the current detector 4 and the central processing analysis and control unit 6, the voltage detector 3 and the current detector 4 comprise a voltage probe and a current probe which are respectively arranged at the exciter 1, as shown in fig. 1, and an oscilloscope 5 for collecting information of the voltage probe and the current probe, wherein the oscilloscope 5 is connected to the central processing analysis and control unit 6 through an optical fiber transmission line. Therefore, under the condition of low voltage or high voltage, the voltage probe and the current probe continuously acquire the voltage and current parameters of the exciter 1, and after the voltage and current parameters change, the changes can be displayed on the oscilloscope 5 in real time, collected and sorted by the oscilloscope 5 and transmitted to the central processing analysis and control unit 6, namely, judged by the central processing analysis and control unit 6.
In order to facilitate the pilot to control the flight safety in real time, as shown in the figure, an alarm 61 is connected to the central processing analysis and control unit 6, wherein the alarm 61 is an alarm signal lamp, and under the low voltage condition, when the central processing analysis and control unit 6 judges that the wing section 0 is frozen, the alarm 61 can be synchronously triggered to remind the pilot to send an instruction and switch to the high voltage unit 2 for supplying power, and after the ice prevention and removal work under the high voltage condition is finished, the central processing analysis and control unit 6 judges that the ice layer is completely removed, the alarm 61 can be synchronously triggered by the central processing analysis and control unit 6 to remind the pilot to send an instruction and switch to the low voltage unit 21 or close the power supply 2; in addition, when the pilot fails to operate and send an instruction in time, the central processing, analyzing and control unit 6 can automatically switch, so as to avoid danger caused by failure of timely removing the ice layer or increase energy consumption caused by failure of timely stopping the power supply of the high-voltage unit 22.
In addition, the embodiment also discloses an experimental method for detecting feasibility of the plasma-based icing sensing and deicing integrated device, which comprises the following steps of:
the method comprises the following steps: selecting and building corresponding experimental equipment, installing an NACA0012 wing type in an icing wind tunnel, wherein the attack angle is 0 degrees, connecting an experimental circuit, and performing a pre-experiment under the condition that the icing wind tunnel is not opened, wherein the pre-experiment comprises the steps of checking whether a high-voltage pulse power supply works normally, whether an exciter 1 discharges normally, and whether voltage and current test equipment measures normally, so that the integrity of each experimental device is ensured;
step two: and opening an icing wind tunnel to work, and pre-blowing to air-dry and remove water. Selecting a wind speed of 65m and/or s, starting refrigeration, and performing an experiment when the ambient temperature of the air-cooled NACA0012 wing profile reaches-15 ℃;
step three: the high-voltage pulse power supply outputs voltage to two ends of the exciter 1 according to parameters set under the conditions of low voltage and high voltage respectively, measures voltage and current oscillograms under the condition of low temperature of 15 ℃ below zero, and the data of the voltage, the current oscillograms, the amplitude values of the voltage and the current and the peak parameter measured under the ice-free environment are original data which are stored in a central processing analysis and control unit 6;
step four: opening a water spray nozzle to generate small water particles with the diameter of about 20 mu m, enabling supercooled water drops to impact the surface of an NACA0012 airfoil to be frozen, enabling part of electrodes to be covered by an ice layer along with the ice layer generated on the surface of the NACA0012 airfoil, measuring voltage, current oscillogram, voltage and current amplitude and peak parameter data in an ice environment, comparing the measured data with original data under a low-voltage condition by a central processing analysis and control unit 6 to obtain that the discharge form of an exciter 1 changes and the voltage and the current become small, and further judging the icing of the surface of the NACA0012 airfoil by the central processing analysis and control unit 6 to give an alarm;
step five: after the icing of the surface of the NACA0012 wing is judged by the alarm signal, an anti-icing and deicing instruction is sent to the central processing analysis and control unit 6, and the central processing analysis and control unit 6 controls the high-voltage pulse power supply to output voltage to two ends of the exciter 1 according to the set parameters under the high-voltage condition so as to carry out plasma anti-icing and deicing work;
step six: when the measured voltage, current oscillogram and amplitude and peak parameter data under the high voltage condition are basically consistent with the original data of the voltage, current oscillogram and amplitude and peak parameter data under the ice-free environment, the deicing can be considered to be finished, the central processing analysis and control unit 6 outputs a larger signal of the voltage and the current to alarm, and the experimenter receives the alarm signal and sends a proper instruction to the central processing analysis and control unit 6, so that the central processing analysis and control unit 6 controls the high-voltage pulse power supply to be closed or adjusted to the parameter under the low voltage condition.
The application method of the plasma-based icing sensing and deicing integrated device comprises the following steps:
s1: collecting original data, selecting and building corresponding experimental equipment, selecting a corresponding experimental carrier according to a carrier to be applied by an exciter 1, attaching the exciter 1 to the experimental carrier, respectively providing voltages for two ends of the exciter 1 by using a low-voltage condition parameter and a high-voltage condition parameter set by a high-voltage pulse power supply under the conditions of low temperature and no ice, measuring voltage and current oscillograms under the temperature condition, and storing the voltage, current oscillograms and amplitude and peak parameter data of the voltage and the current into a central processing analysis and control unit 6 to be used as the original data;
wherein, a plurality of experiments are carried out according to the temperature range of the low-temperature environment when the exciter 1 is applied to the corresponding carrier, different original data under different temperatures are collected and stored in the central processing analysis and control unit 6;
s2: attaching the exciter 1 to an easily-frozen area of a carrier, controlling a high-voltage pulse power supply to continuously provide a low-voltage condition for the exciter 1 through a central processing analysis and control unit 6, detecting voltage and current signal changes at the exciter 1 by using voltage probes and current probes arranged at two ends of the exciter 1, feeding data back to the central processing analysis and control unit 6 through an optical fiber transmission line after an oscilloscope 5 collects and displays measured single pulse voltage and current waveforms in real time, and comparing the collected data with original data at corresponding temperature in real time through the central processing analysis and control unit 6 after the temperature at the current exciter 1 is measured;
s3: when the measured data is compared with the corresponding original data, the discharge form of the exciter 1 is changed, and the voltage and the current are reduced, the central processing analysis and control unit 6 judges that the icing phenomenon occurs on the surface of the carrier, and triggers the alarm 61; when the discharge form, voltage and/or current of the exciter 1 obtained by comparison are basically consistent with the original data, the central processing analysis and control unit 6 judges that the surface of the carrier is free of icing phenomenon, and continuously controls the high-pulse power supply to keep low-voltage output;
s4: after receiving the alarm signal, the pilot sends an anti-icing and deicing instruction to the central processing analysis and control unit 6, and the central processing analysis and control unit 6 controls the high-voltage pulse power supply to provide a high-voltage condition for the exciter 1 according to set parameters to perform anti-icing and deicing work;
s5: when the measured voltage and current oscillogram under the high voltage condition, the amplitude value and peak value data of the voltage and the current are basically consistent with the corresponding original data under the ice-free environment, the central processing analysis and control unit 6 judges that the deicing is finished, triggers the alarm 61, and sends an alarm signal to the flight personnel so as to facilitate the flight personnel to adjust the power supply parameters of the high pulse power supply to the parameters of the closed or low voltage condition.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (8)
1. The application method of the plasma-based icing sensing and deicing integrated device is characterized in that the plasma-based icing sensing and deicing integrated device comprises an exciter arranged in an easily icing area of a wing profile, the exciter is in a dielectric barrier discharge mode, and a power supply source for providing different voltage environments for the exciter, wherein the power supply source comprises a low-voltage unit and a high-voltage unit which are arranged in parallel, and the low-voltage unit and the high-voltage unit are used independently;
the voltage detector is used for detecting the voltage at two ends of the exciter and/or the current detector is used for detecting the current passing through the exciter; the power supply and the voltage detector and/or the current detector are/is communicated with the central processing analysis and control unit;
the power supply is a high-voltage pulse power supply;
when the voltage detector and/or the current detector detects the voltage and/or current reduction at the exciter, the central processing analysis and control unit switches the power supply to the high-voltage unit, and ice prevention and deicing are carried out by utilizing the characteristic of high-temperature plasma generated by the exciter under the high-voltage condition;
after the central processing analysis and control unit judges that the ice layer is eliminated, the power supply is switched to the low-voltage unit or is closed;
the method comprises the following steps:
s1: collecting original data, selecting and building corresponding experimental equipment, selecting a corresponding experimental carrier according to an exciter, namely a carrier to be applied, attaching the exciter to the experimental carrier, providing output voltage for two ends of the exciter by respectively utilizing a low-voltage condition parameter and a high-voltage condition parameter set by a high-voltage pulse power supply under the conditions of low temperature and no ice, measuring a voltage and/or current oscillogram under the temperature condition, and storing the voltage and/or current oscillogram and amplitude and peak parameter data of the voltage and/or current into a central processing analysis and control unit to serve as the original data;
s2: attaching an exciter to an easily-frozen area of a carrier, controlling a high-voltage pulse power supply to continuously provide a low-voltage condition for the exciter through a central processing analysis and control unit, detecting voltage and/or current changes at the exciter by using voltage probes and/or current probes arranged at two ends of the exciter, feeding data back to the central processing analysis and control unit through an optical fiber after an oscilloscope collects and displays the measured single pulse voltage and/or current waveforms in real time, and comparing the collected data with corresponding original data in real time through the central processing analysis and control unit;
s3: when the measured data is compared with the corresponding original data, the change of the discharge form of the exciter and the reduction of the voltage and/or the current are obtained, the central processing analysis and control unit judges that the icing phenomenon occurs on the surface of the carrier, and an alarm is triggered; when the discharge form, voltage and/or current of the exciter obtained by comparison are basically consistent with the original data, the central processing analysis and control unit judges that the surface of the carrier is free of icing phenomenon, and continuously controls the high-pulse power supply to keep low-voltage output;
s4: after receiving the alarm signal, the pilot sends an anti-icing command to the central processing analysis and control unit, and the central processing analysis and control unit controls the high-voltage pulse power supply to provide a high-voltage condition for the exciter according to set parameters so as to perform anti-icing work;
s5: when the measured voltage and/or current oscillogram under the high voltage condition and the amplitude and peak data of the voltage and/or current are basically consistent with the corresponding original data under the ice-free environment, the central processing analysis and control unit judges that the deicing is finished and controls the power supply parameters of the high pulse power supply to be adjusted to the parameters under the condition of closing or low voltage.
2. The use method of the integrated device for sensing and preventing and removing ice based on plasma body as claimed in claim 1, wherein in S1, multiple measurements are performed according to the low-temperature environmental temperature range when the exciter is applied to the corresponding carrier, different raw data are collected at different temperatures and stored in the central processing analysis and control unit; in S2, the temperature of the environment where the actuator is located is measured in advance, and the corresponding raw data is selected according to the temperature and compared with the acquired data in real time.
3. The use method of the integrated device for sensing and preventing and removing ice based on the plasma body as claimed in claim 1, wherein the exciter comprises a covering electrode, an insulating medium and an exposed electrode which are arranged in a laminating and attaching mode, the covering electrode is connected to a low-voltage output end of a power supply, and the exposed electrode is connected to a high-voltage output end of the power supply;
the covering electrode and the exposed electrode are arranged in a mode of covering the front edge of the airfoil, and the insulating medium completely covers the covering electrode.
4. The use method of the integrated device for sensing and preventing and removing ice based on plasma body as claimed in claim 3, wherein the covering electrode is arranged in a sheet shape, and has a length of 75mm, a width of 72mm and a thickness of 0.1 mm;
the thickness of the insulating medium is 0.3 mm;
exposed electrode is netted setting, and it includes 6 long 65mm, wide 2mm, thick 0.1mm, along the chord to electrode strip and 2 long 62mm, wide 2mm, thick 0.1mm of chord to the cladding setting, along the exhibition to the electrode strip that sets up, the chord is to the electrode strip along the exhibition of airfoil leading edge to the interval setting, and its interval is 10mm, two the exhibition is located the both ends of chord to electrode strip subsides, just exposed electrode area of enclosing is 65 x 62mm2。
5. The use method of the integrated device for sensing and deicing based on plasma body as claimed in claim 4, wherein the output voltage range of the low voltage unit is 8-10kv, the modulation frequency range is 50-300Hz, the pulse rising edge is 150ns, the pulse width is 100ns, and the falling edge is 150 ns.
6. The method as claimed in claim 5, wherein the output voltage of the high voltage unit is in the range of 10-16kv, the modulation frequency is in the range of 2000-5000Hz, the pulse rising edge is 150ns, the pulse width is in the range of 100-300ns, and the falling edge is 150 ns.
7. The use method of the integrated device for sensing and preventing and removing ice based on plasma body as claimed in claim 6, wherein the voltage detector comprises a voltage probe for monitoring voltage signals at two ends of the exciter, and/or the current detector comprises a current probe for monitoring current signals passing through the exciter, and further comprises an oscilloscope for collecting information of the voltage probe and/or the current probe, and the oscilloscope is connected with the central processing analysis and control unit through an optical fiber.
8. The use method of the integrated device for sensing and deicing based on plasma body as claimed in claim 7, wherein an alarm is connected with the central processing, analyzing and controlling unit.
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| US10708979B2 (en) | 2016-10-07 | 2020-07-07 | De-Ice Technologies | Heating a bulk medium |
| EP3738882B1 (en) * | 2019-05-14 | 2024-04-03 | Airbus Operations, S.L. | Aerodynamics improvement device for an aircraft and aircraft equipped with such device |
| CN110481793A (en) * | 2019-07-12 | 2019-11-22 | 中国人民解放军空军工程大学 | A kind of new electrically heating ice shape regulation method and anti-freeze type aircraft |
| CN110672665A (en) * | 2019-09-20 | 2020-01-10 | 江西省交通科学研究院 | Design method of icing sensing system applied to road safety early warning |
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| CN112678188A (en) * | 2020-12-25 | 2021-04-20 | 武汉航空仪表有限责任公司 | Icing detector based on impedance measurement principle |
| CN112607032A (en) * | 2020-12-29 | 2021-04-06 | 重庆交通大学绿色航空技术研究院 | Device and method for realizing flow control and ice shape sensing control of aircraft |
| CN115892477B (en) * | 2023-01-09 | 2023-05-02 | 中国空气动力研究与发展中心低速空气动力研究所 | Method and device for detecting plasma in icing range, storage medium, and program |
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