Disclosure of Invention
The application aims to solve the technical problem of providing a distributed electric heating ice prevention and removal control method, a device and a medium, the method has the characteristics of higher control efficiency and more accurate control in distributed electric heating deicing control.
In a first aspect, the present application provides a distributed electric heating ice control method, configured to perform heating control on a plurality of heating areas to be electrically heated and deicing, set a heating control matrix, where element positions in the heating control matrix correspond to the electric heating areas one by one, set heating control states in the heating control matrix according to a required heating control timing, where the heating control states include a heating state in which power is on and a non-heating state in which power is off, and perform heating control on the plurality of heating areas based on the heating control matrix, where the heating control method includes:
Acquiring updating conditions to be met by updating the heating control matrix in real time, if the updating conditions are met, updating the heating control matrix based on the met updating conditions, and performing heating control on the plurality of heating areas based on the updated heating control matrix;
The updating conditions comprise that temperature values in a plurality of heating areas are obtained in real time, if the temperature value is larger than a preset temperature threshold value for any one heating area, the first updating condition is met, and in a heating control matrix to be updated, the heating control state of the heating area meeting the first updating condition is set to be a heating state.
Optionally, the updating condition further includes:
And acquiring heat fluxes in the plurality of heating areas in real time, and for any one heating area, if the heat flux at the current moment is larger than the heat flux at the previous moment and the difference between the heat flux at the current moment and the heat flux at the previous moment is larger than a preset heat flux difference threshold, setting the heating control state of the heating area meeting the second updating condition as a heating state.
Optionally, each heating control period includes m heating control states, where m is an even number greater than or equal to 4.
Optionally, the heating control of the plurality of heating areas based on the heating control matrix includes:
In each updated heating control period of the heating control matrix, multiplying a control matrix of a first heating control state in the heating control period with the updated heating control matrix to obtain a second heating control matrix of the heating control period, wherein the second heating control matrix is used as a control matrix of a second heating control state in the heating control period, the control matrix of the first heating control state is a full heating control matrix, and each element value in the full heating control is a heating state value;
adding the second heating control matrix and the full heating control matrix to obtain a third heating control matrix, and taking the third heating control as a control matrix of a third heating control state in a heating control period;
Multiplying the third heating control matrix by the all non-heating control matrix to obtain a fourth heating control matrix, and taking the fourth heating control as a control matrix of a fourth heating control state in a heating control period, wherein each element value in the all non-heating control matrix is a non-heating state value;
The heating state value is an integer greater than or equal to 1, and the non-heating state value is 0.
Optionally, the heating control of the plurality of heating areas based on the heating control matrix includes:
The control matrix of the initial state before heating the plurality of heating areas is a full non-heating control matrix, and the control matrix of the initial state before heating is multiplied by the full heating control matrix to obtain the control matrix of the first heating control state of the first heating control period before entering the first heating control period.
Optionally, the element values of the all-heating control matrix are all 1, and the element values of the all-non-heating control matrix are all 0.
In a second aspect, the present application provides a distributed electric heating ice control device for implementing the distributed electric heating ice control method described in any one of the above, including a power supply, a controller, a plurality of heating elements, a plurality of temperature sensors, and a plurality of switching devices;
Each heating area is provided with a heating element and a temperature sensor, each switching device corresponds to the heating element of each heating area, and the heating element is used for powering on or powering off a power supply through the switching device;
The controller is configured to collect a temperature signal for each heating zone and update a heating control matrix, and control on or off of each of the plurality of switching devices based on the updated heating control matrix, thereby controlling a heating control state of each of the plurality of heating elements.
Optionally, the temperature sensor is a heat flux sensor;
The controller is configured to acquire a temperature signal and a heat flux signal for each heating zone and update the heating control matrix based on the temperature signal and the heat flux signal;
wherein updating the heating control matrix based on the heat flux signal comprises:
And acquiring heat fluxes in the plurality of heating areas in real time, and for any one heating area, if the heat flux at the current moment is larger than the heat flux at the previous moment and the difference between the heat flux at the current moment and the heat flux at the previous moment is larger than a preset heat flux difference threshold, setting the heating control state of the heating area meeting the second updating condition as a heating state.
Optionally, the controller is further configured to send a voltage setting parameter to the power supply to enable power supply voltage setting.
In a third aspect, the present application provides a computer-readable storage medium having stored therein a program that can be loaded by a processor and that executes the distributed electric heating ice control method according to any one of the above.
The beneficial effects of the invention are as follows:
Because the heating control matrix is arranged, the element positions in the heating control matrix are in one-to-one correspondence with the electric heating areas, and the heating control states in the heating control matrix are arranged according to the required heating control time sequence, wherein the heating control states comprise a heating state of power-on and a non-heating state of power-off, and the heating control is performed on the plurality of heating areas based on the heating control matrix. Based on the form of the control matrix, the heating control states to be changed are uniformly arranged in the heating control matrix, instead of single control for each heating area, each change is integrated into the heating control matrix, occupation of calculation resources is reduced, optimization of control is facilitated, and control efficiency is improved. Under the same control efficiency, a plurality of small heating areas are not required to be divided into one large heating area, and the control precision is improved.
Detailed Description
The application will be described in further detail below with reference to the drawings by means of specific embodiments. Wherein like elements in different embodiments are numbered alike in association. In the following embodiments, numerous specific details are set forth in order to provide a better understanding of the present application. However, one skilled in the art will readily recognize that some of the features may be omitted, or replaced by other elements, materials, or methods in different situations. In some instances, related operations of the present application have not been shown or described in the specification in order to avoid obscuring the core portions of the present application, and may be unnecessary to persons skilled in the art from a detailed description of the related operations, which may be presented in the description and general knowledge of one skilled in the art.
Furthermore, the described features, operations, or characteristics of the description may be combined in any suitable manner in various embodiments. Also, various steps or acts in the method descriptions may be interchanged or modified in a manner apparent to those of ordinary skill in the art. Thus, the various orders in the description and drawings are for clarity of description of only certain embodiments, and are not meant to be required orders unless otherwise indicated.
The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated.
For convenience of explanation of the inventive concept of the present application, a brief explanation of the distributed electric heating deicing technique will be given below.
In the present distributed heating, there are schemes in which a plurality of heating areas are planned for the heating means, however, the heating control laws for the plurality of heating areas are either unified control or single control.
However, for single control, in one scheme, the single control is performed on each small area, so that not only is the individual judgment performed on each small area, but also the control law is updated in real time for each small area, the control is complicated, the control efficiency is low, more computing resources are occupied, and the optimization of the control is not facilitated. In addition, considering the use condition of a real airborne power supply, if the power supply power of multiple areas is required to be independently regulated and controlled, the regulation of heating energy is difficult to achieve. In this way, in one modification, a plurality of small areas are divided into one large area, and then the plurality of small areas included in the large area are uniformly controlled to improve the control efficiency, but in turn, the control accuracy is reduced.
Therefore, it is a technical difficulty how to improve the control accuracy and control efficiency.
Referring to fig. 1, taking an airfoil component of an aircraft as an example, the heating area thereof is a leading edge windward area, i.e., the position indicated by the arrow in fig. 1. The distributed electric heating is to divide the protection area, for example, after the area is flattened in fig. 1, the protection area can be divided into 3 rows and 4 columns, that is, 12 independent heating areas are provided.
It will be appreciated by those skilled in the art that the 12 heating zones of fig. 1 are merely exemplary, and that the division of more or fewer heating zones is not intended to limit the scope of the present application.
Because the heating component in fig. 1 is in an asymmetric structure, positions on the component corresponding to 12 areas are different in heat exchange conditions in an icing heat exchange environment, so that the control rule of certain areas needs to be selectively changed in heating control. Therefore, how to quickly and accurately select 12 areas can improve the control accuracy and the control efficiency, and becomes a technical difficulty of distributed electric heating.
In view of this, the embodiments of the present application break the conventional thinking and provide a distributed electric heating ice control method, apparatus, and medium, in which a heating control matrix is set, where element positions in the heating control matrix correspond to electric heating areas one by one, and heating control states in the heating control matrix are set according to a required heating control timing sequence, where the heating control states include a heating state in which power is turned on and a non-heating state in which power is turned off, and heating control is performed on a plurality of heating areas based on the heating control matrix.
Based on the scheme, based on the form of the control matrix, the heating control states needing to be changed are uniformly arranged in the heating control matrix, rather than single control is carried out for each heating area, each change is integrated into the heating control matrix, occupation of computing resources is reduced, optimization of control is facilitated, and control efficiency is improved. Under the same control efficiency, a plurality of small heating areas are not required to be divided into one large heating area, and the control precision is improved.
For easy understanding of the solution of the present application, in the embodiment of the present application, a distributed electric heating deicing control apparatus is described first, and please refer to fig. 2, the apparatus includes a power source 01, a controller 02, a plurality of heating elements, a plurality of temperature sensors 03 and a plurality of switching devices 04.
Each heating area is provided with a heating element and a temperature sensor 03, each switching device corresponds to the heating element of each heating area, and the heating element is powered on or powered off through the switching device 04.
In one embodiment, an airfoil component of an aircraft, as in FIG. 1, divided into 12 heating zones, each provided with a heating element and a temperature sensor. In one embodiment, a heating zone may have a heating element and a temperature sensor. In one embodiment, a heating zone may also have multiple heating elements and multiple temperature sensors for more uniform heating and more accurate temperature. The power-on state or the power-off state of the corresponding heating element is controlled by controlling the switching state of each switching device.
The controller is configured to collect a temperature signal for each heating zone and update the heating control matrix, and control on or off of each of the plurality of switching devices based on the updated heating control matrix, thereby controlling a heating control state of each of the plurality of heating elements.
In one embodiment, the temperature sensor employs a heat flux sensor. The controller is configured to acquire a temperature signal and a heat flux signal for each heating zone and update the heating control matrix based on the temperature signal and the heat flux signal. Wherein updating the heating control matrix based on the heat flux signal comprises:
And acquiring heat fluxes in the plurality of heating areas in real time, and for any one heating area, if the heat flux at the current moment is larger than the heat flux at the previous moment and the difference between the heat flux at the current moment and the heat flux at the previous moment is larger than a preset heat flux difference threshold, setting the heating control state of the heating area meeting the second updating condition as a heating state.
The heat flux sensor is a sensor capable of detecting both temperature and heat flux. The heat flux sensor is in the form of a flexible sheet and can measure the amount of heat passing through the sensor in watts per square centimeter, i.e., how much heat passes through the sensor per unit area. The heat flux sensor comprises a thermopile for measuring heat, and a temperature sensor for measuring the temperature, wherein the temperature sensor is used as the basis for calculating and correcting the heat flux. Therefore, the heat flux sensor can not only obtain the heat flux with a certain area range, but also obtain the temperature of one point position.
In one embodiment, a heat flux sensor is disposed between the skin and the heating element of the component, with the heat flux sensor in the middle, the skin on the outside, the heating element on the inside, and the heat flux sensor not fully conforms to the heating area, covering more than 60% of the area.
In one embodiment, the controller is further configured to send a voltage setting parameter to the power supply to effect the power supply voltage setting.
Based on the distributed electric heating deicing control device, the distributed electric heating deicing control method provided by the embodiment of the application can be realized and is used for heating control of a plurality of heating areas needing electric heating deicing. The heating control states include a heating state in which power is on and a non-heating state in which power is off, and heating control is performed on the plurality of heating regions based on the heating control matrix. And acquiring updating conditions required to be met by updating the heating control matrix in real time, updating the heating control matrix based on the met updating conditions if the updating conditions are met, and performing heating control on the plurality of heating areas based on the updated heating control matrix.
Based on the scheme, based on the form of the control matrix, the heating control states needing to be changed are uniformly arranged in the heating control matrix, rather than single control is carried out for each heating area, each change is integrated into the heating control matrix, occupation of computing resources is reduced, optimization of control is facilitated, and control efficiency is improved. Under the same control efficiency, a plurality of small heating areas are not required to be divided into one large heating area, and the control precision is improved.
The updating condition comprises the steps of acquiring temperature values in a plurality of heating areas in real time, and setting the heating control state of the heating area meeting the first updating condition as a heating state in a heating control matrix to be updated if the temperature value is larger than a preset temperature threshold value for any one heating area.
In one embodiment, the update condition includes only the first update condition, and if the first update condition is satisfied, in the heating control matrix to be updated, the heating control state of the heating area that satisfies the first update condition is set to a heating state, and the heating control states of the other heating areas are set to a non-heating state.
Therefore, not only can different heating effects with region selectivity be realized, but also unified selection control can be realized, and the problems of low efficiency and difficult realization of single selection control are avoided.
In one embodiment, the temperature threshold may be set at 1 to 3 degrees celsius, such as 2 degrees celsius or 3 degrees celsius.
However, the applicant found in the study that if the selection accuracy of the different heating effect regions is low only based on the temperature detection, even if the first updating condition is not reached, the heat flux becomes large in the case where the heating region has ice coating, and at this time, the first updating condition may not be satisfied yet.
In view of this, in order to set the heating effect of the heating areas more timely and accurately, in one embodiment, the updating condition further includes acquiring the heat fluxes in the plurality of heating areas in real time, and for any one heating area, if the heat flux at the current time is greater than the heat flux at the previous time, and the difference between the heat flux at the current time and the heat flux at the previous time is greater than a preset heat flux difference threshold, the second updating condition is satisfied, and the heating control state of the heating area satisfying the second updating condition is set to be the heating state.
In one embodiment, in the case where the update conditions include both the first update condition and the second update condition, in the heating control matrix to be updated, the heating control state of the heating region that satisfies the first update condition is set to the heating state, and it is determined whether or not there is a heating region that satisfies the second update condition in the other heating regions, and if so, the heating control state of the heating region that satisfies the second update condition is set to the heating state as well, and the heating control state of the remaining heating regions is set to the non-heating state.
In one embodiment, each thermal control cycle includes m heating control states, where m is an even number greater than or equal to 4. That is, each heating control cycle may include 4, 6, 8, etc. heating control states.
In one embodiment, for the m heating control states, the heating state and the non-heating state are alternately arranged.
In one embodiment, the length of time occupied by each heated state and each unheated state is the same.
For ease of control and switching, in one particular embodiment, each heating control cycle may include 4 heating control states.
In one embodiment, referring to fig. 3 and 4, performing heating control on a plurality of heating regions based on a heating control matrix may include:
step S10, in each heating control period after updating the heating control matrix, multiplying the control matrix of the first heating control state in the heating control period by the updated heating control matrix to obtain a second heating control matrix of the heating control period, and using the second heating control matrix as the control matrix of the second heating control state in the heating control period.
The control matrix of the first heating control state is a full heating control matrix, and each element value in the full heating control is a heating state value.
In one embodiment, the heating state value is an integer greater than or equal to 1 and the non-heating state value is 0.
Before the heating areas need to be heated, the heating control state of each heating area is a non-heating state, so in an embodiment, please refer to fig. 4, at this time, the control matrix of the initial state before the heating of the plurality of heating areas is a non-heating control matrix, that is, the element values in the heating control matrix are all 0. And adding the control matrix in the initial state before heating with the full heating control matrix before entering the first heating control period to obtain the control matrix in the first heating control state of the first heating control period, wherein the element values of the control matrix in the first heating control state are all 1. Since the heating state values are integers greater than or equal to 1, the element values of the control matrix of the first heating control state may be integers greater than or equal to 1.
In one embodiment, since the second heating control state of the default heating cycle is the non-heating state, the control matrix of the first heating control state may be multiplied by a total non-heating control matrix to obtain the control matrix of the second heating control state of the first heating control cycle with element values of 0. Wherein each element value in the all non-heating control matrix is a non-heating state value.
In one embodiment, since the third heating control state of the default heating cycle is the heating state, the control matrix of the second heating control state may be added to a full heating control matrix to obtain the control matrix of the third heating control state of the first heating control cycle with element values of 1.
In one embodiment, since the fourth heating control state of the default heating cycle is the non-heating state, the control matrix of the third heating control state may be multiplied by a total non-heating control matrix to obtain the control matrix of the fourth heating control state of the first heating control cycle with element values of 0.
In one embodiment, if no event satisfying the update condition occurs, the heating control of the plurality of heating areas is performed according to the conditions generated by the control matrix of the first heating control state, the control matrix of the second heating control state, the control matrix of the third heating control state, and the control matrix of the fourth heating control state and the formed heating control period.
Once there is a time to meet the update condition, in each heating control period after the heating control matrix is updated, multiplying the control matrix of the first heating control state in the heating control period with the updated heating control matrix to obtain a second heating control matrix of the heating control period, and taking the second heating control matrix as the control matrix of the second heating control state in the heating control period until the next heating control matrix is updated.
Referring to fig. 4, in one embodiment, assume that the control matrix including three rows and four columns of 12 heating areas satisfies the update condition, and the heating areas corresponding to two elements in the middle are heating areas. The heating control state of the middle two elements is set to the heating state. In one embodiment, the middle two element values are set to 1. Referring to the matrix indicated by input_state in fig. 4, the updated heating control matrix is shown. Multiplying the updated heating control matrix by the control matrix of the first heating control state in the heating cycle results in a second heating control matrix of the heating control cycle. Referring to the second heating control matrix in fig. 4, in the second heating control matrix, the element values of the middle two elements are 1 and the rest are 0, i.e. in the second heating control state, the heating areas corresponding to the middle two elements are heating states, and the rest areas are non-heating states.
Step S20, adding the second heating control matrix and the full heating control matrix to obtain a third heating control matrix, and taking the third heating control as a control matrix of a third heating control state in the heating control period.
In one embodiment, referring to fig. 4, the second heating control matrix is added to the full heating control matrix (the matrix indicated by all_one in fig. 4) to obtain a third heating control matrix, where the element values are All greater than or equal to 1, i.e. in the third heating control state, all the heating areas are in the heating state.
Step S30, multiplying the third heating control matrix by the all non-heating control matrix to obtain a fourth heating control matrix, and taking the fourth heating control as a control matrix of a fourth heating control state in the heating control period.
In one embodiment, referring to fig. 4, the fourth heating control matrix is obtained by multiplying the third heating control matrix by the All-non-heating control matrix (matrix denoted by all_zero in fig. 4), where the element values are equal to 1, i.e., in the fourth heating control state, all the heating areas are in the non-heating state.
Based on the above steps S10 to S30, it is known that, after updating the heating control matrix for the heating region satisfying the update condition, in one heating control period including four heating control states, the heating region satisfying the update condition is changed from the original two heating states to three heating states, thereby realizing heating control to obtain more heating heat.
Therefore, based on the scheme, the unified heating control of a plurality of heating areas can be realized by only acquiring the heating areas meeting the updating conditions and setting the heating control matrix based on the heating areas meeting the updating conditions, the method is simple, the control efficiency is improved, and based on the method, the unified control of finer area division is conveniently realized.
In one embodiment of the present application, a computer readable storage medium is provided, on which a program is stored, the stored program including a distributed electric heating ice control method capable of being loaded and processed by a processor in any of the above embodiments.
Those skilled in the art will appreciate that all or part of the functions of the various methods in the above embodiments may be implemented by hardware, or may be implemented by a computer program. When all or part of the functions in the above embodiments are implemented by means of a computer program, the program may be stored in a computer-readable storage medium, which may include a read-only memory, a random access memory, a magnetic disk, an optical disk, a hard disk, etc., and the program is executed by a computer to implement the functions. For example, the program is stored in the memory of the device, and when the program in the memory is executed by the processor, all or part of the functions described above can be realized. In addition, when all or part of the functions in the above embodiments are implemented by means of a computer program, the program may be stored in a storage medium such as a server, another computer, a magnetic disk, an optical disk, a flash disk, or a removable hard disk, and the program in the above embodiments may be implemented by downloading or copying the program into a memory of a local device or updating a version of a system of the local device, and when the program in the memory is executed by a processor.
The foregoing description of the invention has been presented for purposes of illustration and description, and is not intended to be limiting. Several simple deductions, modifications or substitutions may also be made by a person skilled in the art to which the invention pertains, based on the idea of the invention.