CN114056581A - Windshield glass heating control method and system - Google Patents
Windshield glass heating control method and system Download PDFInfo
- Publication number
- CN114056581A CN114056581A CN202111565789.1A CN202111565789A CN114056581A CN 114056581 A CN114056581 A CN 114056581A CN 202111565789 A CN202111565789 A CN 202111565789A CN 114056581 A CN114056581 A CN 114056581A
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- China
- Prior art keywords
- temperature
- windshield
- control
- upper limit
- overshoot
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- 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.)
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- 239000011521 glass Substances 0.000 title claims abstract description 72
- 238000010438 heat treatment Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000000126 substance Substances 0.000 claims description 6
- 230000009125 negative feedback regulation Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002365 multiple layer Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Images
Classifications
-
- 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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
- H05B3/86—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields the heating conductors being embedded in the transparent or reflecting material
Abstract
The application belongs to the technical field of heating control design of airplane windshield glass, and particularly relates to a heating control method of windshield glass, which comprises the following steps: when the temperature on the windshield is lower than the upper limit of the temperature control of the windshield, heating the windshield until the temperature on the windshield exceeds the difference value of the upper limit of the temperature control of the windshield and the upper limit overshoot control temperature calculation; taking the difference value between the lower control limit of the temperature of the windshield glass and the minimum value of the temperature on the windshield glass as the lower limit overshoot control temperature; taking the difference value between the maximum temperature of the windshield glass and the control upper limit of the temperature of the windshield glass as the upper limit overshoot control temperature; when the temperature on the windshield is below the sum of the lower control limit of the windshield temperature and the lower overshoot control temperature calculation, the windshield is heated again. In addition, the windshield glass heating control system controls the temperature of the windshield glass based on the windshield glass heating control method.
Description
Technical Field
The application belongs to the technical field of heating control design of airplane windshield glass, and particularly relates to a heating control method and system of the windshield glass.
Background
In order to avoid fog adhesion or icing on the airplane windshield glass, a windshield glass heating control system is designed to heat the airplane windshield glass and control the temperature of the airplane windshield glass, the airplane windshield glass is of a multilayer medium laminating structure, the thermal inertia is large, the temperature of the airplane windshield glass is controlled by the current windshield glass heating control system, the phenomenon of temperature overshoot is easy to occur, the phenomenon that the temperature on the airplane windshield glass is too high and the service life of the airplane windshield glass is damaged occurs, or the condition that the temperature on the airplane windshield glass is too low and the effective fog prevention and ice prevention on the airplane windshield glass cannot be realized occurs.
The present application has been made in view of the above-mentioned technical drawbacks.
It should be noted that the above background disclosure is only for the purpose of assisting understanding of the inventive concept and technical solutions of the present invention, and does not necessarily belong to the prior art of the present patent application, and the above background disclosure should not be used for evaluating the novelty and inventive step of the present application without explicit evidence to suggest that the above content is already disclosed at the filing date of the present application.
Disclosure of Invention
It is an object of the present application to provide a windshield heating control method and system thereof to overcome or alleviate at least one of the technical deficiencies of the known prior art.
The technical scheme of the application is as follows:
in one aspect, a windshield heating control method is provided, comprising:
when the temperature on the windshield is lower than the upper limit of the temperature control of the windshield, heating the windshield until the temperature on the windshield exceeds the difference value of the upper limit of the temperature control of the windshield and the upper limit overshoot control temperature calculation;
taking the difference value between the lower control limit of the temperature of the windshield glass and the minimum value of the temperature on the windshield glass as the lower limit overshoot control temperature;
taking the difference value between the maximum temperature of the windshield glass and the control upper limit of the temperature of the windshield glass as the upper limit overshoot control temperature;
when the temperature on the windshield is below the sum of the lower control limit of the windshield temperature and the lower overshoot control temperature calculation, the windshield is heated again.
Optionally, in the above method for controlling heating of a windshield, when the temperature on the windshield is lower than the upper limit of the temperature control of the windshield, the windshield is heated until the temperature on the windshield exceeds the difference between the upper limit of the temperature control of the windshield and the upper limit overshoot control temperature, specifically:
when the temperature on the windshield is lower than the upper limit of the temperature control of the windshield, the windshield is heated until the temperature on the windshield exceeds the upper limit of the temperature control of the windshield and the upper limit overshoot control temperature nmaxThe difference in the multiples, wherein,
wherein the content of the first and second substances,
nmaxcontrolling a temperature adjustment coefficient for the upper limit overshoot;
Δtmaxovershoot the control temperature for the upper limit;
ton the upper partThe upper limit of the windshield temperature control.
Optionally, in the windshield glass heating control method, the upper limit overshoot control temperature and the upper limit overshoot control temperature adjustment coefficient are initialized to 0.
Optionally, in the above method for controlling heating of windshield glass, the temperature on the windshield glass is lower than a sum of the lower control limit of the temperature of the windshield glass and the lower overshoot control temperature, and the windshield glass is heated again, specifically:
temperature on the windscreen is lower than the lower control limit and the lower overshoot control temperature n of the windscreen temperatureminAt the sum of the two, the windscreen is heated again, wherein,
wherein the content of the first and second substances,
nmincontrolling a temperature adjustment coefficient for the lower limit overshoot;
Δtminis an upper limit ofControlling the temperature;
tlower partThe lower control limit for the windshield temperature.
Another aspect provides a windshield heating control system comprising:
the temperature sensor is used for collecting the temperature of the windshield glass;
a heater for heating the windshield glass;
and a controller connected with the temperature sensor and the heater to form negative feedback regulation for controlling the temperature of the windshield glass, and controlling the temperature of the windshield glass based on any one of the heating control methods of the windshield glass.
Optionally, in the windshield heating control system, the windshield has a multiple-layer glass structure;
the temperature sensor and the heater are embedded in the multilayer structure of the windshield.
The application has at least the following beneficial technical effects:
a method for controlling the heating of a windscreen includes starting the heating of the windscreen when the temperature of the windscreen is lower than the upper limit of the temperature control of the windscreen, so as to avoid the situation that the temperature of the windscreen is too low due to high thermal inertia, stopping the heating until the temperature of the windscreen exceeds the difference between the upper limit of the temperature control of the windscreen and the upper limit overshoot control temperature, avoiding the situation that the temperature of the windscreen is too high due to high thermal inertia, setting the difference between the lower limit of the temperature control of the windscreen and the minimum value of the temperature of the windscreen during each heating of the windscreen as the lower limit overshoot control temperature, setting the difference between the maximum value of the temperature of the windscreen and the upper limit of the temperature control of the windscreen as the upper limit overshoot control temperature, and setting the temperature of the windscreen lower than the lower limit of the temperature control of the windscreen and the overshoot control temperature of the windscreen during the heating of the windscreen And when the sum value is obtained, the heating is started again to heat the windshield glass, so that the condition that the temperature of the windshield glass is too low due to larger thermal inertia is avoided, the lower limit overshoot control temperature and the upper limit overshoot control temperature are updated in real time in each heating period, the anti-interference capability is strong, the temperature on the windshield glass can be effectively, quickly and stably controlled between the upper limit and the lower limit of the temperature control of the windshield glass, and the temperature overshoot phenomenon is avoided.
In addition, the windshield glass heating control system is implemented based on the windshield glass heating control method, and the beneficial technical effects can refer to the technical effects of the windshield glass heating control method.
Drawings
FIG. 1 is a schematic flow chart of a windshield heating control method provided in an embodiment of the present application;
FIG. 2 is a schematic view of a windshield heating control system provided in an embodiment of the present application.
FIG. 3 is a schematic view of the heating control for an aircraft windshield provided in an embodiment of the present application.
For the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; in addition, the drawings are used for illustrative purposes, and the positional relationship is only for illustrative purposes and is not to be construed as limiting the patent.
Detailed Description
In order to make the technical solutions and advantages of the present application clearer, the technical solutions of the present application will be further clearly and completely described in the following detailed description with reference to the accompanying drawings, and it should be understood that the specific embodiments described herein are only some of the embodiments of the present application, and are only used for explaining the present application, but not limiting the present application. It should be noted that, for convenience of description, only the parts related to the present application are shown in the drawings, other related parts may refer to general designs, and the embodiments and technical features in the embodiments in the present application may be combined with each other to obtain a new embodiment without conflict.
In addition, unless otherwise defined, technical or scientific terms used in the description of the present application shall have the ordinary meaning as understood by one of ordinary skill in the art to which the present application belongs. The terms "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inner", "outer", and the like used in the description of the present application, which indicate orientations, are used only to indicate relative directions or positional relationships, and do not imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and when the absolute position of the object to be described is changed, the relative positional relationships may be changed accordingly, and thus, should not be construed as limiting the present application. The use of "first," "second," "third," and the like in the description of the present application is for descriptive purposes only to distinguish between different components and is not to be construed as indicating or implying relative importance. The use of the terms "a," "an," or "the" and similar referents in the context of describing the application is not to be construed as an absolute limitation on the number, but rather as the presence of at least one. The word "comprising" or "comprises", and the like, when used in this description, is intended to specify the presence of stated elements or items, but not the exclusion of other elements or items.
Further, it is noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and the like are used in the description of the invention in a generic sense, e.g., connected as either a fixed connection or a removable connection or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, or they may be connected through the inside of two elements, and those skilled in the art can understand their specific meaning in this application according to the specific situation.
The present application will be described in further detail below with reference to fig. 1 to 3, taking the example of the heating control of the temperature of the windshield of an aircraft.
As shown in fig. 3, the heating control method for the temperature of the windshield glass of the aircraft specifically includes the following steps:
initializing Δ tmax＝0、nmax0, wherein Δ tmaxFor the upper overshoot control temperature, Δ tminControlling the temperature for a lower limit overshoot;
at t<tOn the upper partWhen the heating is started, the airplane windshield glass is heated until t<tOn the upper part-nmaxΔtmaxWherein t is the temperature of the windshield of the airplane, and can be acquired by a temperature sensorOn the upper partUpper limit of temperature control of aircraft windshield, nmaxControlling a temperature adjustment coefficient for the upper limit overshoot;
recording the minimum value t of the temperature on an aircraft windscreen during the heating thereofminCalculating and updating the lower limit overshoot control temperature Δ tmin＝tmin-tLower partWherein, tLower partThe lower limit of the temperature control of the aircraft windshield glass is defined;
recording the maximum value t of the temperature on the aircraft windscreen after the heating of the latter has ceasedmaxCalculating and updating the lower limit overshoot control temperature Δ tmax＝tmax-tOn the upper part；
At t<tLower part+nminΔtminThen, the windshield is heated again, where nminThe temperature adjustment coefficient is controlled for the lower limit overshoot.
The following is constructed from the thermal inertia of an aircraft windshield:
wherein the content of the first and second substances,
ton the upper part' is an estimated value for controlling the temperature on the aircraft windshield to exceed the upper control limit of the aircraft windshield temperature;
Δtmax' estimation of overshoot for controlling temperature on aircraft windshield beyond aircraft windshield temperature control ceilingA value;
and constructing the following formula:
wherein the content of the first and second substances,
ton the upper part' is an estimated value for controlling the temperature on the aircraft windshield to be lower than the lower control limit of the temperature of the aircraft windshield;
Δtmin' is an estimate of the amount of overshoot that controls the temperature on the aircraft windshield below the lower control limit for the aircraft windshield temperature.
In order to control the temperature on an aircraft windscreen, a heating control system is designed comprising:
the temperature sensor is used for acquiring the temperature of the windshield glass of the airplane;
the heater is used for heating the windshield glass of the airplane;
and the controller is connected with the temperature sensor and the heater to form negative feedback regulation for controlling the temperature of the airplane windshield glass, and controls the temperature of the airplane windshield glass based on the airplane windshield glass heating control method.
In some optional embodiments, in the above-mentioned aircraft windshield heating control system, the aircraft windshield is a multiple-layer glass structure;
the temperature sensor and the heater are embedded in a multilayer structure of the aircraft windshield glass, are not easy to damage and are not easy to be influenced by the outside, the temperature of the aircraft windshield glass can be accurately acquired, and the aircraft windshield glass can be stably heated, wherein the heater can be an electric heating element specifically and comprises an indium oxide film.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
Having thus described the present application in connection with the preferred embodiments illustrated in the accompanying drawings, it will be understood by those skilled in the art that the scope of the present application is not limited to those specific embodiments, and that equivalent modifications or substitutions of related technical features may be made by those skilled in the art without departing from the principle of the present application, and those modifications or substitutions will fall within the scope of the present application.
Claims (6)
1. A windshield heating control method, comprising:
when the temperature on the windshield is lower than the upper limit of the temperature control of the windshield, heating the windshield until the temperature on the windshield exceeds the difference value of the upper limit of the temperature control of the windshield and the upper limit overshoot control temperature calculation;
taking the difference value between the lower control limit of the temperature of the windshield glass and the minimum value of the temperature on the windshield glass as the lower limit overshoot control temperature;
taking the difference value between the maximum temperature of the windshield glass and the control upper limit of the temperature of the windshield glass as the upper limit overshoot control temperature;
when the temperature on the windshield is below the sum of the lower control limit of the windshield temperature and the lower overshoot control temperature calculation, the windshield is heated again.
2. The heating control method for a windshield glass according to claim 1,
when the temperature on the windshield is lower than the upper limit of the temperature control of the windshield, the windshield is heated until the temperature on the windshield exceeds the difference value of the upper limit of the temperature control of the windshield and the upper limit overshoot control temperature, and the method specifically comprises the following steps:
lower temperature on the windscreen than the windscreenWhen the glass temperature control upper limit is reached, the windshield glass is heated until the temperature on the windshield glass exceeds the windshield glass temperature control upper limit and the upper limit overshoot control temperature nmaxThe difference in the multiples, wherein,
wherein the content of the first and second substances,
nmaxcontrolling a temperature adjustment coefficient for the upper limit overshoot;
Δtmaxovershoot the control temperature for the upper limit;
ton the upper partThe upper limit of the windshield temperature control.
3. The heating control method of a windshield according to claim 2,
the upper limit overshoot control temperature and the upper limit overshoot control temperature adjustment coefficient are initialized to 0.
4. The heating control method for a windshield glass according to claim 1,
the temperature on the windshield is lower than the sum of the lower control limit and the lower overshoot control temperature of the windshield, and the windshield is heated again, specifically:
temperature on the windscreen is lower than the lower control limit and the lower overshoot control temperature n of the windscreen temperatureminAt the sum of the two, the windscreen is heated again, wherein,
wherein the content of the first and second substances,
nmincontrolling a temperature adjustment coefficient for the lower limit overshoot;
Δtminovershoot the control temperature for the upper limit;
tlower partUnder the control of the temperature of the windshieldAnd (4) limiting.
5. A windshield heating control system, comprising:
the temperature sensor is used for collecting the temperature of the windshield glass;
a heater for heating the windshield glass;
a controller connected to the temperature sensor and the heater to form a negative feedback regulation for controlling the windshield temperature, and controlling the windshield temperature based on the windshield heating control method according to any one of claims 1 to 4.
6. The windshield heating control system of claim 5,
the windshield glass is of a multi-layer glass structure;
the temperature sensor and the heater are embedded in the multilayer structure of the windshield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111565789.1A CN114056581B (en) | 2021-12-20 | 2021-12-20 | Windshield heating control method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111565789.1A CN114056581B (en) | 2021-12-20 | 2021-12-20 | Windshield heating control method and system |
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| Publication Number | Publication Date |
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| CN114056581A true CN114056581A (en) | 2022-02-18 |
| CN114056581B CN114056581B (en) | 2023-11-28 |
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Citations (5)
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|---|---|---|---|---|
| CN201828841U (en) * | 2010-09-27 | 2011-05-11 | 秦皇岛科普铁科实用技术开发中心 | Anti-freezing anti-frosting automatic sensing control system for railway locomotive windshield window |
| CN204821482U (en) * | 2015-08-12 | 2015-12-02 | 中国航空工业集团公司西安飞机设计研究所 | Anti -icing defogging system of hybrid aircraft windscreen |
| CN110422312A (en) * | 2019-07-26 | 2019-11-08 | 北京神导科讯科技发展有限公司 | Method for heating and controlling, device, equipment and the medium of helicopter windshield |
| WO2020096477A1 (en) * | 2018-11-09 | 2020-05-14 | Дмитрий Вячеславович ФЕДОТОВ | Thermodynamic test bench for simulating aerodynamic heating |
| CN112822805A (en) * | 2019-11-15 | 2021-05-18 | 中车唐山机车车辆有限公司 | Windshield glass electric heating control circuit, control method and system |
-
2021
- 2021-12-20 CN CN202111565789.1A patent/CN114056581B/en active Active
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|---|---|---|---|---|
| CN201828841U (en) * | 2010-09-27 | 2011-05-11 | 秦皇岛科普铁科实用技术开发中心 | Anti-freezing anti-frosting automatic sensing control system for railway locomotive windshield window |
| CN204821482U (en) * | 2015-08-12 | 2015-12-02 | 中国航空工业集团公司西安飞机设计研究所 | Anti -icing defogging system of hybrid aircraft windscreen |
| WO2020096477A1 (en) * | 2018-11-09 | 2020-05-14 | Дмитрий Вячеславович ФЕДОТОВ | Thermodynamic test bench for simulating aerodynamic heating |
| CN110422312A (en) * | 2019-07-26 | 2019-11-08 | 北京神导科讯科技发展有限公司 | Method for heating and controlling, device, equipment and the medium of helicopter windshield |
| CN112822805A (en) * | 2019-11-15 | 2021-05-18 | 中车唐山机车车辆有限公司 | Windshield glass electric heating control circuit, control method and system |
| WO2021093077A1 (en) * | 2019-11-15 | 2021-05-20 | 中车唐山机车车辆有限公司 | Windshield glass electric heating control circuit, control method and system |
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| Title |
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