CN116374169A - Control method, system and device for rotor blade with variable sweepback wings - Google Patents
Control method, system and device for rotor blade with variable sweepback wings Download PDFInfo
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- CN116374169A CN116374169A CN202310495002.1A CN202310495002A CN116374169A CN 116374169 A CN116374169 A CN 116374169A CN 202310495002 A CN202310495002 A CN 202310495002A CN 116374169 A CN116374169 A CN 116374169A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/54—Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement
- B64C27/72—Means acting on blades
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/54—Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement
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Abstract
The invention discloses a control method, a control system and a control device for a rotor blade with a variable sweepback wing, and relates to the field of rotor blades; the method comprises the following steps: acquiring azimuth angles of the first blade and the second blade; judging whether azimuth angles of the first blade and the second blade are not in a preset range, and obtaining a first judgment result; if the first judgment result is yes, returning to the previous step; if the first judgment result is negative, the sweepers of the blades corresponding to the azimuth angles in the preset range are sweepers to be adjusted, and the resistance value of the sweepers to be adjusted is obtained; judging whether the resistance value is larger than a preset resistance threshold value or not to obtain a second judgment result; the second judgment result is that the tip speed and the forward speed generated by the rotation of the sweepback to be adjusted are obtained, and the sweepback control angle is calculated; carrying out sweepback control on the sweepback device to be adjusted according to the sweepback control angle; and returning to 'obtaining the resistance value of the sweepback device to be adjusted' until the azimuth angle is not in the preset range, sweepback is carried out on the local high-speed region, and the high-speed impulse noise is reduced.
Description
Technical Field
The present invention relates to the field of rotor blades, and more particularly, to a method, system, and apparatus for controlling a rotor blade with variable sweep.
Background
The aerodynamic noise of the rotor mainly comprises thickness noise and load noise, and is the aerodynamic noise caused by aerodynamic force change generated by the rotor exhausting air and the rotor respectively.
The helicopter has a unique vertical take-off and landing mode and air hovering capability, so that the helicopter plays an indispensable role in the fields of urban transportation, rescue and relief tasks, battlefield reconnaissance and fight and the like; however, the unique working mode of the helicopter rotor provides the required lift force by rotation, so that the helicopter rotor is influenced by the forward flying speed in forward flying, the combined speed of the helicopter rotor is increased at the forward flying side blade and reduced at the backward flying side, the speed of the forward flying side blade is close to the sound velocity when the helicopter rotor flies at a high speed, shock waves are generated, high-speed impulse noise (HSI) with high intensity and low frequency and obvious periodicity is generated immediately, the shock waves are generated at the forward flying side blade, and high-intensity HSI noise is generated, and the noise belongs to one of load noise.
There are generally two methods for solving this problem, one is a method for varying the rotational speed. Secondly, the sweepback mode is adopted, the generation of shock waves is reduced to reduce HSI noise, tian Yingzhong, jiang Han and the like realize a variable sweepback mechanism for the fixed wing. The traditional noise reduction method through the blade sweepback method can only be applied to the blade tip position of a rotor wing, and meanwhile, the method can change the gravity center position of the blade, so that the dynamic problem can be caused, and the noise reduction effect is small. The variable speed method can simultaneously cause the speed of the remaining blades on the rotor to change while changing the rotating speed of the blades on the advancing side.
Disclosure of Invention
The invention aims to provide a control method, a control system and a control device for a rotor blade with a variable sweepback wing, which can sweep back a local high-speed area and realize noise reduction of high-speed impulse noise.
In order to achieve the above object, the present invention provides the following solutions:
a method of controlling a rotor blade of a variable sweep, the method comprising:
acquiring an azimuth angle of the first blade and an azimuth angle of the second blade; the included angle between the first blade and the second blade is 180 degrees;
judging whether the azimuth angle of the first blade and the azimuth angle of the second blade are not in a preset range or not, and obtaining a first judgment result; the preset range is a range of more than 60 degrees and less than 120 degrees;
if the first judgment result shows that the first judgment result is yes, returning to the step of acquiring the azimuth angle of the first blade and the azimuth angle of the second blade;
if the first judgment result indicates no, the sweepback device of the blade corresponding to the azimuth angle in the preset range is set as the sweepback device to be adjusted, and the following operation is executed:
acquiring a resistance value of the sweepback to be adjusted;
judging whether the resistance value is larger than a preset resistance threshold value or not to obtain a second judging result;
if the second judgment result is yes, the tip speed and the forward flight speed generated by the rotation of the sweepback to be adjusted are obtained;
calculating to obtain the actual tip speed of the to-be-adjusted sweepback device according to the tip speed and the front flying speed generated by rotation;
calculating a sweepback control angle of the sweepback to be adjusted according to the actual tip speed;
the sweepback device to be adjusted is subjected to sweepback control according to the sweepback control angle;
and returning to the step of obtaining the resistance value of the sweepback to be adjusted until the azimuth angle of the blade corresponding to the sweepback to be adjusted is not in the preset range.
Optionally, according to the tip speed and the forward flying speed generated by rotation, a formula for calculating the actual tip speed of the to-be-adjusted backsweder is as follows:
V tip＝ V rotation +V forward ；
wherein V is tip Representing actual tip speed, V rotation Representing rotation-induced tip speed, V forward Indicating the forward speed.
Optionally, calculating a sweep control angle of the sweep apparatus to be adjusted according to the actual tip speed, including:
and calculating a sweepback coefficient according to the actual tip speed, wherein the sweepback coefficient is as follows:
A＝(V tip -0.7*C)/(3*r)；
wherein A represents a sweepback coefficient, C represents sound velocity, and r represents the length of a blade corresponding to the sweepback to be adjusted;
and calculating a sweepback control angle according to the sweepback coefficient, wherein the sweepback control angle is as follows:
Ω ψ ＝Ω-sin(3ψ)·A；
wherein Ω ψ Let-off control angle be denoted, ψ be the azimuth of the corresponding blade of the sweepback to be adjusted, Ω be the initial state sweepback angle, Ω=0°.
A control system for a rotor blade of a variable sweep, the control system for a rotor blade of a variable sweep being applied to a method of any one of the above, the control system comprising:
the first acquisition module is used for acquiring the azimuth angle of the first blade and the azimuth angle of the second blade; the included angle between the first blade and the second blade is 180 degrees;
the first judging module is used for judging whether the azimuth angle of the first blade and the azimuth angle of the second blade are not in a preset range or not, and obtaining a first judging result; the preset range is a range of more than 60 degrees and less than 120 degrees;
if the first judgment result shows that the first judgment result is yes, returning to 'acquisition of the azimuth angle of the first blade and the azimuth angle of the second blade';
if the first judgment result indicates no, the sweepback device of the blade corresponding to the azimuth angle in the preset range is set as the sweepback device to be adjusted;
the second acquisition module is used for acquiring the resistance value of the sweepback to be adjusted;
the second judging module is used for judging whether the resistance value is larger than a preset resistance threshold value or not to obtain a second judging result;
the third acquisition module is used for acquiring the tip speed and the forward flight speed generated by the rotation of the sweepback to be adjusted when the second judgment result is yes;
the first calculation module is used for calculating the actual tip speed of the sweepback to be adjusted according to the tip speed and the front flying speed generated by rotation; calculating a sweepback control angle of the sweepback to be adjusted according to the actual tip speed;
the first control module is used for carrying out sweepback control on the sweepback device to be adjusted according to the sweepback control angle;
and returning to 'collecting the resistance value of the sweepback to be adjusted' until the azimuth angle of the blade corresponding to the sweepback to be adjusted is not in the preset range.
An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing a method as claimed in any one of the preceding claims when executing the computer program.
A computer readable storage medium having stored thereon a computer program which when executed performs a method according to any of the preceding claims.
A device for a rotor blade of a variable sweep, the device for a rotor blade of a variable sweep comprising:
the device comprises a first blade, a second blade, a first sweepback, a second sweepback, a first angle sensor, a second angle sensor, a first resistance sensor, a second resistance sensor and a controller;
one end of the first blade is connected with one end of the second blade, an included angle between the first blade and the second blade is 180 degrees, the first sweepback is positioned at the other end of the first blade, the second sweepback is positioned at the other end of the second blade, the first angle sensor and the first resistance sensor are arranged on the first sweepback, the second angle sensor and the second resistance sensor are arranged on the second sweepback, and the controller is respectively connected with the first sweepback, the second sweepback, the first angle sensor, the second angle sensor, the first resistance sensor and the second resistance sensor;
the controller is configured to control the first and second sweepers by using any one of the methods described above.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention discloses a control method, a control system and a control device for a rotor blade with a variable sweepback wing, and relates to the field of rotor blades; the method comprises the following steps: acquiring an azimuth angle of the first blade and an azimuth angle of the second blade; judging whether the azimuth angle of the first blade and the azimuth angle of the second blade are not in a preset range or not to obtain a first judgment result; if the first judgment result is yes, returning to acquire the azimuth angle of the first blade and the azimuth angle of the second blade; if the first judgment result is negative, the sweepers of the blades corresponding to the azimuth angles in the preset range are sweepers to be adjusted, and the resistance value of the sweepers to be adjusted is obtained; judging whether the resistance value is larger than a preset resistance threshold value or not to obtain a second judgment result; the second judgment result is that the tip speed and the forward speed generated by the rotation of the sweepback to be adjusted are obtained, and the sweepback control angle is calculated; carrying out sweepback control on the sweepback device to be adjusted according to the sweepback control angle; and returning to acquire the resistance value of the sweepback to be adjusted until the azimuth angle is not in the preset range, and performing rotor sweepback control on the local high-speed area so as to achieve the noise reduction effect of high-speed impulse noise.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a vertical block diagram of a first blade, a second blade, and a sweepback according to the present invention;
FIG. 2 is a schematic view of the first blade of the present invention having an azimuth angle of 60 degrees;
FIG. 3 is a schematic view of the first blade of the present invention having an azimuth angle of 120 degrees;
FIG. 4 is a flow chart of the method of the present invention;
fig. 5 is a schematic view of the horizontal structure of the present invention.
Symbol description:
1. a first blade; 2. a second blade; 3. a first sweepback; 4. and a second sweepback.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a control method, a control system and a control device for a rotor blade with a variable sweepback wing, which realize the noise reduction of high-speed impulse noise by sweepback in a local high-speed area.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
In order to form an effective sweepback control system, the invention uses the phase difference of two blade rotors as demonstration to form a rotor system for changing sweepback angle.
The rotor system designed by the invention mainly comprises two blades, namely a first blade 1 and a second blade 2, as shown in figure 1, taking the first blade 1 as an example, and a first sweepback 3 is arranged at the tip of the first blade 1. The angle between the first blade 1 and the second blade 2 is 180 °. When the first blade 1 is located on the forward side, the forward flying speed is affected, the relative speed of the blade tip is increased, HSI noise is generated, and the rotor is sweepback controlled. The rotor blade and swept portion are shown mounted. V depicted in the figure tip For tip speed, V rotation For tip speed due to rotation, V forward Is the forward flight speed.
Example 1
As shown in fig. 4, a method for controlling a rotor blade with variable swept wings specifically includes:
acquiring an azimuth angle of the first blade 1 and an azimuth angle of the second blade 2; the included angle between the first blade 1 and the second blade 2 is 180 degrees;
judging whether the azimuth angle of the first blade 1 and the azimuth angle of the second blade 2 are not in a preset range, and obtaining a first judgment result; the preset range is a range of more than 60 degrees and less than 120 degrees;
if the first judgment result shows that the first judgment result is yes, returning to the step of acquiring the azimuth angle of the first blade 1 and the azimuth angle of the second blade 2;
if the first judgment result indicates no, the sweepback device of the blade corresponding to the azimuth angle in the preset range is set as the sweepback device to be adjusted, and the following operation is executed:
acquiring a resistance value of the sweepback to be adjusted;
judging whether the resistance value is larger than a preset resistance threshold value or not to obtain a second judging result;
if the second judgment result is yes, the tip speed and the forward flight speed generated by the rotation of the sweepback to be adjusted are obtained;
calculating to obtain the actual tip speed of the to-be-adjusted sweepback device according to the tip speed and the front flying speed generated by rotation;
calculating a sweepback control angle of the sweepback to be adjusted according to the actual tip speed;
the sweepback device to be adjusted is subjected to sweepback control according to the sweepback control angle;
judging whether the azimuth angles of the first blade 1 and the second blade 2 are not in a preset range, otherwise, returning to the step of acquiring the resistance value of the sweepback to be adjusted, and returning to the step of acquiring the azimuth angle of the first blade 1 and the azimuth angle of the second blade 2.
In specific implementation, according to the tip speed and the front flying speed generated by rotation, the formula for calculating the actual tip speed of the to-be-adjusted sweepback device is as follows:
V tip ＝V rotation +V forward ；
wherein V is tip Representing actual tip speed, V rotation Representing rotation-induced tip speed, V forward Indicating the forward speed.
In implementation, calculating the sweepback control angle of the sweepback to be adjusted according to the actual tip speed specifically includes:
and calculating a sweepback coefficient according to the actual tip speed, wherein the sweepback coefficient is as follows:
A＝(V tip -0.7*C)/(3*r)；
wherein A represents a sweepback coefficient, C represents sound velocity, and r represents the length of a blade corresponding to the sweepback to be adjusted;
the sweepback control angle is calculated according to the sweepback coefficient and is as follows:
Ω ψ ＝Ω-sin(3ψ)·A；
wherein Ω ψ Represents the sweepback control angle, ψ represents the azimuth of the corresponding blade of the sweepback to be adjusted, Ω represents the sweepback angle in the initial state, Ω=0°.
Example 2
As shown in fig. 2 and 3, for efficient control of the sweepback portion, the positions of the sweepback start azimuth and end azimuth are given, respectively, where ψ is the angle of the blade from the forward direction, i.e. azimuth. ψ=90° is a leading side blade, and ψ=270° is a trailing side blade.
The sweep start azimuth angle ψ=60°, the end azimuth angle ψ=120°, and the second blade 2 is on the trailing side when the sweep start position of the first blade 1 is shown in fig. 2. The first sweepback 3 starts sweepback at this time.
Fig. 3 shows the first blade 1 in a swept-back end position, with the second blade 2 not on the trailing side. At this time, the rotor finishes sweepback and recovers the normal wing profile. When the second blade 2 is rotated further by 120 deg., the rotor enters the next sweep cycle.
From the above, in the process of rotating the rotor for one revolution, each blade generates a sweep-back period, dividing the rotating process into two sweep-back periods, each period comprises 180 ° azimuth, and is divided into two parts: (1) Non-swept back state, i.e., ψ=0-60° and ψ=210-360 °. (2) sweepback state, i.e., ψ=60-120 °.
In order to realize the stable transition of the sweepback angle, the control of the sweepback angle is realized by the following formula:
Ω ψ ＝Ω-sin(3ψ)·A
in omega ψ The method comprises the steps of expressing a sweepback control angle, wherein ψ represents an azimuth angle of a corresponding blade of a sweepback device to be adjusted, Ω represents a sweepback angle in an initial state, Ω=0°, a is a sweepback coefficient, and the sweepback coefficient is an active control coefficient based on a forward flying speed in a control system. Through the sweepback angle control formula, the relative Mach number of the blade tip of the blade on the advancing side is maintained below 0.7. Based on the current forward flight speed, giving the value of the sweepback coefficient A: a= (Vtip-0.7×c)/(3*r). Wherein C represents the sound velocity, and r represents the length of the blade corresponding to the sweepback to be adjusted.
Example 3
A control system for a rotor blade of a variable sweep, the control system for a rotor blade of a variable sweep being applied to a method of any one of the above, the system comprising:
the first acquisition module is used for acquiring the azimuth angle of the first blade 1 and the azimuth angle of the second blade 2; the included angle between the first blade 1 and the second blade 2 is 180 degrees;
the first judging module is used for judging whether the azimuth angle of the first blade 1 and the azimuth angle of the second blade 2 are not in a preset range or not, and obtaining a first judging result; the preset range is a range of more than 60 degrees and less than 120 degrees;
if the first judgment result shows that the first judgment result is yes, returning to 'acquisition of the azimuth angle of the first blade 1 and the azimuth angle of the second blade 2';
if the first judgment result indicates no, the sweepback device of the blade corresponding to the azimuth angle in the preset range is set as the sweepback device to be adjusted;
the second acquisition module is used for acquiring the resistance value of the sweepback to be adjusted;
the second judging module is used for judging whether the resistance value is larger than a preset resistance threshold value or not to obtain a second judging result;
the third acquisition module is used for acquiring the tip speed and the forward flight speed generated by the rotation of the sweepback to be adjusted when the second judgment result is yes;
the first calculation module is used for calculating the actual tip speed of the sweepback to be adjusted according to the tip speed and the front flying speed generated by rotation; calculating a sweepback control angle of the sweepback to be adjusted according to the actual tip speed;
the first control module is used for carrying out sweepback control on the sweepback device to be adjusted according to the sweepback control angle;
and returning to 'collecting the resistance value of the sweepback to be adjusted' until the azimuth angle of the blade corresponding to the sweepback to be adjusted is not in the preset range.
Example 4
In a specific embodiment, as shown in fig. 5, the first acquisition module, the first judgment module, the second acquisition module, the second judgment module, the third acquisition module, and the first calculation module form a control system, and the first control module is a sweepback changing system. The resistance sensor receives and transmits a resistance surge signal to the control system, the control system receives the forward side resistance surge signal transmitted by the resistance sensor, reads the current flying speed, starts to dynamically respond, and the control system reads the flying speed parameters, and roots the following stepsData a= (V tip -0.7 x c)/(3*r) calculating the sweepback deceleration coefficient a according to Ω ψ The angle of sweep is calculated by =Ω -sin (3 ψ) ·a, and the calculated angle of sweep is transmitted to a sweep-changing system which controls the sweep of the sweep according to the angle of sweep received.
An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing a method as claimed in any one of the preceding claims when executing the computer program.
A computer readable storage medium having stored thereon a computer program which when executed performs a method according to any of the preceding claims.
A device for a rotor blade of a variable sweep, the device for a rotor blade of a variable sweep comprising:
the device comprises a first blade 1, a second blade 2, a first sweepback 3, a second sweepback 4, a first angle sensor, a second angle sensor, a first resistance sensor, a second resistance sensor and a controller;
one end of the first blade 1 is connected with one end of the second blade 2, an included angle between the first blade 1 and the second blade 2 is 180 degrees, the first sweepback 3 is positioned at the other end of the first blade 1, the second sweepback 4 is positioned at the other end of the second blade 2, the first angle sensor and the first resistance sensor are arranged on the first sweepback 3, the second angle sensor and the second resistance sensor are arranged on the second sweepback 4, and the controller is respectively connected with the first sweepback 3, the second sweepback 4, the first angle sensor, the second angle sensor, the first resistance sensor and the second resistance sensor;
the controller is configured to control the first and second sweepers 4 by using any one of the above methods.
When the resistance sensor detects that the blade is positioned on the forward side, the resistance is obviously increased, so that the blade is shockwave at the moment and high-level HSI noise is generated. At the moment, the system feeds back the steering engine for controlling the sweepback of the helicopter by the sweepback angle-changing active control method established by the scheme.
When the flight state changes, the sweepback of the blade is dynamically adjusted through real-time monitoring of the resistance sensor, so that the tip Mach number of the blade at the advancing side is maintained below 0.7.
An active control method for changing the sweepback angle is established, and the dynamic control method is related to the azimuth angle and the flying speed.
The active control method for changing the sweepback angle develops a dynamically-responding rotor noise reduction system with changing the sweepback angle, and the system is built by the control method and realizes real-time sweepback angle adjustment by a steering engine.
The invention has the beneficial effects that:
(1) The invention realizes the effective control of high-speed impulse noise by a method of changing the sweepback angle in real time.
(2) The sweep angle changing method established by the invention has simple and reliable structure, and can actively control the noise of the forward blade without affecting the pneumatic performance of the backward blade.
(3) Compared with passive sweepback blade noise reduction means, the rotor wing structure has better dynamic performance, and the problems of flutter and the like caused by the change of the gravity center position are avoided. Meanwhile, the active control means for real-time monitoring can be adaptively applied to various flight environments.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present invention and the core ideas thereof; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (7)
1. A method of controlling a rotor blade with a variable sweep, the method comprising:
acquiring an azimuth angle of the first blade and an azimuth angle of the second blade; the included angle between the first blade and the second blade is 180 degrees;
judging whether the azimuth angle of the first blade and the azimuth angle of the second blade are not in a preset range or not, and obtaining a first judgment result; the preset range is a range of more than 60 degrees and less than 120 degrees;
if the first judgment result shows that the first judgment result is yes, returning to the step of acquiring the azimuth angle of the first blade and the azimuth angle of the second blade;
if the first judgment result indicates no, the sweepback device of the blade corresponding to the azimuth angle in the preset range is set as the sweepback device to be adjusted, and the following operation is executed:
acquiring a resistance value of the sweepback to be adjusted;
judging whether the resistance value is larger than a preset resistance threshold value or not to obtain a second judging result;
if the second judgment result is yes, the tip speed and the forward flight speed generated by the rotation of the sweepback to be adjusted are obtained;
calculating to obtain the actual tip speed of the to-be-adjusted sweepback device according to the tip speed and the front flying speed generated by rotation;
calculating a sweepback control angle of the sweepback to be adjusted according to the actual tip speed;
carrying out sweepback control on the sweepback device to be adjusted according to the sweepback control angle;
and returning to the step of obtaining the resistance value of the sweepback to be adjusted until the azimuth angle of the blade corresponding to the sweepback to be adjusted is not in the preset range.
2. The method of claim 1, wherein the actual tip speed of the swept blade to be adjusted is calculated from the tip speed and the forward fly speed generated by the rotation by the formula:
V tip＝ V rotation +V forward ；
wherein V is tip Representing actual tip speed, V rotation Representing rotation-induced tip speed, V forward Indicating the forward speed.
3. The method of controlling a rotor blade with variable sweep according to claim 2, characterized in that calculating the sweep control angle of the sweep to be adjusted according to the actual tip speed comprises:
and calculating a sweepback coefficient according to the actual tip speed, wherein the sweepback coefficient is as follows:
A＝(V tip -0.7*C)/(3*r)；
wherein A represents a sweepback coefficient, C represents sound velocity, and r represents the length of a blade corresponding to the sweepback to be adjusted;
and calculating a sweepback control angle according to the sweepback coefficient, wherein the sweepback control angle is as follows:
Ω ψ ＝Ω-sin(3ψ)·A；
wherein Ω ψ Let-off control angle be denoted, ψ be the azimuth of the corresponding blade of the sweepback to be adjusted, Ω be the initial state sweepback angle, Ω=0°.
4. A control system for a variable sweep rotor blade, wherein the control system for a variable sweep rotor blade is applied to the method of claims 1-3, the control system comprising:
the first acquisition module is used for acquiring the azimuth angle of the first blade and the azimuth angle of the second blade; the included angle between the first blade and the second blade is 180 degrees;
the first judging module is used for judging whether the azimuth angle of the first blade and the azimuth angle of the second blade are not in a preset range or not, and obtaining a first judging result; the preset range is a range of more than 60 degrees and less than 120 degrees;
if the first judgment result shows that the first judgment result is yes, returning to 'acquisition of the azimuth angle of the first blade and the azimuth angle of the second blade';
if the first judgment result indicates no, the sweepback device of the blade corresponding to the azimuth angle in the preset range is set as the sweepback device to be adjusted;
the second acquisition module is used for acquiring the resistance value of the sweepback to be adjusted;
the second judging module is used for judging whether the resistance value is larger than a preset resistance threshold value or not to obtain a second judging result;
the third acquisition module is used for acquiring the tip speed and the forward flight speed generated by the rotation of the sweepback to be adjusted when the second judgment result is yes;
the first calculation module is used for calculating the actual tip speed of the sweepback to be adjusted according to the tip speed and the front flying speed generated by rotation; calculating a sweepback control angle of the sweepback to be adjusted according to the actual tip speed;
the first control module is used for carrying out sweepback control on the sweepback device to be adjusted according to the sweepback control angle;
and returning to 'collecting the resistance value of the sweepback to be adjusted' until the azimuth angle of the blade corresponding to the sweepback to be adjusted is not in the preset range.
5. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method of any one of claims 1 to 3 when executing the computer program.
6. A computer readable storage medium, characterized in that the storage medium has stored thereon a computer program which, when executed, implements the method according to any of claims 1 to 3.
7. A device for a rotor blade of a variable sweep, said device comprising:
the device comprises a first blade, a second blade, a first sweepback, a second sweepback, a first angle sensor, a second angle sensor, a first resistance sensor, a second resistance sensor and a controller;
one end of the first blade is connected with one end of the second blade, an included angle between the first blade and the second blade is 180 degrees, the first sweepback is positioned at the other end of the first blade, the second sweepback is positioned at the other end of the second blade, the first angle sensor and the first resistance sensor are arranged on the first sweepback, the second angle sensor and the second resistance sensor are arranged on the second sweepback, and the controller is respectively connected with the first sweepback, the second sweepback, the first angle sensor, the second angle sensor, the first resistance sensor and the second resistance sensor;
the controller is configured to control the backswept of the first and second backswesters using the method of any one of claims 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310495002.1A CN116374169B (en) | 2023-05-05 | 2023-05-05 | Control method, system and device for rotor blade with variable sweepback wings |
Applications Claiming Priority (1)
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