CN112762883B - Device and method for measuring deflection angle of control surface of slat - Google Patents
Device and method for measuring deflection angle of control surface of slat Download PDFInfo
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- CN112762883B CN112762883B CN202011602615.3A CN202011602615A CN112762883B CN 112762883 B CN112762883 B CN 112762883B CN 202011602615 A CN202011602615 A CN 202011602615A CN 112762883 B CN112762883 B CN 112762883B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C1/00—Measuring angles
Abstract
The invention provides a device and a method for measuring deflection angle of a control surface of a flap, comprising the following steps: a gear reduction mechanism and an angular displacement sensor are arranged on a rotary actuator at the tail end of a flap drive line system to form a measuring device, the measurement of the deflection angle of the flap control surface is realized by detecting the rotation angle of a torsion bar of the drive line system, specifically, the output voltage of the angular displacement sensor is detected, and the deflection angle of the flap control surface is obtained at least according to the detected output voltage. The measuring method provided by the invention can realize the measurement of the deflection angle of the control surface of the slat of a large-scale airplane, and the technical scheme of the invention adopts the angular displacement sensor and the gear reduction mechanism as basic measuring components, thereby solving the problem that the deflection angle of the control surface can not be directly measured by adopting the conventional methods such as the angular displacement sensor or the linear displacement sensor due to the factors such as the complicated structure of the airplane body, the various movement forms of the control surface, the limited space layout and the like.
Description
Technical Field
The invention relates to the technical field of aviation testing, in particular to a device and a method for measuring deflection angle of a control surface of a slat.
Background
For large military and civil aircraft, a high lift control system becomes an essential component, and a high lift control system with high reliability and safety plays a key role in the maneuverability and flight safety of the aircraft. The high lift control subsystem needs to realize functions of closed loop control, position display, fault monitoring and the like, so that the measurement of the deflection angle of the control surface of the slat cannot be avoided, and the detection of the deflection angle signal of the control surface of the slat is very important.
Due to the factors of complex structure, various motion forms, limited space layout and the like of the flap strip of the large airplane, the large airplane can be conventionally used for measuring the deflection angle of the flap strip of the large airplane in small airplanes and airplanes with very small deflection angle of the control surface, such as directly mounting an angular displacement sensor, a linear displacement sensor, a pull rope type displacement sensor and a proximity type sensor, or combining a four-connecting rod and an angular displacement sensor and the like, and the deflection angle of the control surface of the flap strip of the large airplane can not be measured.
Disclosure of Invention
The purpose of the invention is: the embodiment of the invention provides a device and a method for measuring deflection angle of a control surface of a flap, which aim to solve the problem that the measurement cannot be realized by a large airplane with a complex structure, various motion forms and limited space layout of the flap in the conventional manner for measuring the deflection angle of the control surface of the flap.
The technical scheme of the invention is as follows: the embodiment of the invention provides a device for measuring deflection angle of a control surface of a flap, which comprises: a rotary actuator 1, a gear reduction mechanism 2 and an angular displacement sensor 3;
the rotary actuator 1 is connected with the slat control surface 4, the front end of the rotary actuator is mounted at the tail end of the slat transmission line system, the rear end of the rotary actuator 1 is provided with a gear reduction mechanism 2, and the angular displacement sensor 3 is connected with the gear reduction mechanism 2;
the rotary actuator 1 is used for driving the flap control surface 4 to deflect at a specified angle according to the control of the high lift control system;
the gear speed reducing mechanism 2 is used for reducing the rotation of the front end rotary actuator 1, transmitting the reduced rotation to the angular displacement sensor 3 at the rear end of the gear speed reducing mechanism, and driving the angular displacement sensor 3 to rotate at the reduced rotation angle;
the angular displacement sensor 3 is used for converting the rotation angle of the angular displacement sensor into output voltage and transmitting the output voltage to the high lift control system;
the high lift control system is used for obtaining the deflection angle of the slat control surface 4 at least according to the received output voltage of the angular displacement sensor 3.
The embodiment of the invention also provides a method for measuring the deflection angle of the control surface of the slat, which comprises the following steps:
step 1, installing a gear reduction mechanism 2 at the rear end of a rotary actuator 1, and connecting an angular displacement sensor 3 with the gear reduction mechanism to form the device for measuring the deflection angle of the control surface of the slat according to claim 1, wherein the rotary actuator 1 is a rotary actuator installed at the tail end of a slat transmission line system;
step 3, the angular displacement sensor 3 converts the rotation angle reduced by the gear reduction mechanism 2 into output voltage and transmits the output voltage to the high lift control system;
and 4, obtaining the deflection angle of the slat control surface 4 by the high lift control system at least according to the received output voltage.
Optionally, in the method for measuring the deflection angle of the slat control surface as described above, the deflection angle of the slat control surface 4 obtained in step 4 is proportional to the output voltage of the mounted angular displacement sensor 3, and the deflection angle of the slat control surface 4 is expressed as:
α＝U*f(k1，k2，k3)；
wherein α represents a deflection angle of the slat control surface 4, U represents an output voltage of the angular displacement sensor 3, k1 represents a scale factor of a rotation angle of the slat drive train end rotation actuator 1 and the deflection angle of the slat control surface 4, k2 represents a deceleration ratio of the gear reduction mechanism 2, and k3 represents a gradient of the angular displacement sensor 3.
Optionally, in the method for measuring the deflection angle of the slat control surface as described above, the deflection angle of the slat control surface 4 obtained in step 4 is inversely proportional to the gradient of the mounted angular displacement sensor 3, and the deflection angle of the slat control surface 4 is expressed as:
α＝f(U，k1，k2)/k3；
wherein α represents a deflection angle of the slat control surface 4, U represents an output voltage of the angular displacement sensor 3, k1 represents a scale factor of a rotation angle of the slat drive train end rotation actuator 1 and the deflection angle of the slat control surface 4, k2 represents a deceleration ratio of the gear reduction mechanism 2, and k3 represents a gradient of the angular displacement sensor 3.
Optionally, in the method for measuring a deflection angle of a slat control surface as described above, the deflection angle of the slat control surface 4 obtained in step 4 is proportional to a reduction ratio of the mounted gear reduction mechanism 2, and the deflection angle of the slat control surface 4 is expressed as:
α＝k2*f(U，k1，k3)；
wherein α represents a deflection angle of the slat control surface 4, U represents an output voltage of the angular displacement sensor 3, k1 represents a scale factor of a rotation angle of the slat drive train end rotation actuator 1 and the deflection angle of the slat control surface 4, k2 represents a deceleration ratio of the gear reduction mechanism 2, and k3 represents a gradient of the angular displacement sensor 3.
Optionally, in the method for measuring a deflection angle of a slat control surface as described above, the deflection angle of the slat control surface 4 obtained in step 4 is inversely proportional to a ratio of the rotation angle of the rotary actuator 1 and a scaling factor of the deflection angle of the slat control surface 4, and the deflection angle of the slat control surface 4 is expressed as:
α＝f(U，k2，k3)/k1；
wherein α represents a deflection angle of the slat control surface 4, U represents an output voltage of the angular displacement sensor 3, k1 represents a scale factor of a rotation angle of the slat drive train end rotation actuator 1 and the deflection angle of the slat control surface 4, k2 represents a deceleration ratio of the gear reduction mechanism 2, and k3 represents a gradient of the angular displacement sensor 3.
Optionally, in the method for measuring a deflection angle of a slat control surface as described above, the deflection angle of the slat control surface 4 is estimated according to a proportional relationship between the deflection angle of the slat control surface 4 and an output voltage of an angular displacement sensor 3, a gradient of the angular displacement sensor 3, a reduction ratio of a gear reduction mechanism 2, or the proportional factor.
Optionally, in the method for measuring a deflection angle of a slat control surface as described above, the deflection angle of the slat control surface 4 obtained in step 4 is:
wherein α represents a deflection angle of the slat control surface 4, U represents an output voltage of the angular displacement sensor 3, k1 represents a scale factor of a rotation angle of the slat drive train end rotation actuator 1 and the deflection angle of the slat control surface 4, k2 represents a deceleration ratio of the gear reduction mechanism 2, and k3 represents a gradient of the angular displacement sensor 3.
The invention has the advantages that: the embodiment of the invention provides a device and a method for measuring deflection angle of a control surface of a slat. The technical scheme of the invention can realize the measurement of the deflection angle of the control surface of the flap slat of a large-scale airplane, for example, the technical scheme of the invention adopts an angular displacement sensor and a gear reduction mechanism as basic measurement components, overcomes the defects that the conventional measurement method cannot measure the deflection angle of the control surface of the flap slat, which has a complex structure, various motion forms and limited spatial layout, has simple and effective design, and can accurately measure the deflection angle of the control surface of the flap slat.
Drawings
The accompanying drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and are not intended to limit the invention.
FIG. 1 is a schematic structural diagram of a device for measuring deflection angle of a control surface of a slat provided by an embodiment of the invention;
fig. 2 is a flowchart of a method for measuring a deflection angle of a control surface of a slat according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The following specific embodiments of the present invention may be combined, and the same or similar concepts or processes may not be described in detail in some embodiments. The present disclosure is described in further detail below with reference to the accompanying drawings, and fig. 1 and 2 are referred to in the following.
Fig. 1 is a schematic structural diagram of a device for measuring a deflection angle of a control surface of a slat provided by an embodiment of the present invention. As shown in fig. 1, the apparatus for measuring a deflection angle of a control surface of a slat provided in an embodiment of the present invention may include: a rotary actuator 1, a gear reduction mechanism 2 and an angular displacement sensor 3.
In the structure of the device for measuring the deflection angle of the flap control surface shown in fig. 1, a rotary actuator 1 is connected with the flap control surface 4, the front end of the rotary actuator is installed at the tail end of a flap drive line system, a gear reduction mechanism 2 is installed at the rear end of the rotary actuator 1, and an angular displacement sensor 3 is connected with the gear reduction mechanism 2.
Based on the installation relationship of the rotary actuator 1, the gear reduction mechanism 2 and the angular displacement sensor 3 and the connection mode of the rotary actuator 1 and the slat control surface 4 in the embodiment of the invention. The rotary actuator 1 in the measuring device provided by the embodiment of the invention has the following functions: according to the control of the high lift control system, the slat control surface 4 is driven to deflect by a specified angle;
the gear reduction mechanism 2 in the embodiment of the invention has the following functions: the rotation of the front end rotary actuator 1 is decelerated and then transmitted to the angular displacement sensor 3 at the rear end, and the angular displacement sensor 3 is driven to rotate at the decelerated rotation angle.
The angular displacement sensor 3 in the embodiment of the invention has the following functions: and converting the rotation angle of the output voltage into an output voltage and transmitting the output voltage to a high lift control system.
The high lift control system in the embodiment of the invention obtains the deflection angle of the slat rudder surface 4 at least according to the received output voltage of the angular displacement sensor 3.
Based on the device for measuring the deflection angle of the control surface of the slat provided by the embodiment of the invention, the embodiment of the invention also provides a method for measuring the deflection angle of the control surface of the slat, as shown in fig. 2, the method is a flow chart of the method for measuring the deflection angle of the control surface of the slat provided by the embodiment of the invention, and the method comprises the following steps:
step 1, a gear reduction mechanism is installed at the rear end of the rotary actuator, and the angular displacement sensor is connected with the gear reduction mechanism, so that the device for measuring the deflection angle of the control surface of the slat in the embodiment of the invention is formed.
It should be noted that the rotary actuator in the embodiment of the present invention is a specific rotary actuator mounted at the end of the slat drive train.
step 3, converting the rotation angle reduced by the gear reduction mechanism into output voltage by the angular displacement sensor, and transmitting the output voltage to the high lift control system;
and 4, detecting the output voltage of the angular displacement sensor by the high lift control system to obtain the deflection angle of the control surface of the slat at least according to the detected output voltage.
In one embodiment of the invention, the deflection angle of the control surface of the slat to be measured may be directly proportional to the output voltage of the mounted angular displacement sensor; in a specific implementation, the deflection angle of the slat control surface 4 is expressed as: α = U × f (k 1, k2, k 3).
In another embodiment of the invention, the deflection angle of the control surface of the slat to be measured may be proportional to the reduction ratio of the gear reduction mechanism mounted; in a specific implementation, the deflection angle of the slat rudder 4 is expressed as: α = k2 f (U, k1, k 3).
In yet another embodiment of the invention, the measured deflection angle of the slat control surface may be inversely proportional to a scaling factor of the rotation angle of the slat drive train end rotation actuator and the deflection angle of the slat control surface; in a specific implementation, the deflection angle of the slat control surface 4 is expressed as:
α＝f(U，k2，k3)/k1。
in yet another embodiment of the invention, the angle of deflection of the slat rudder measured may be inversely proportional to the gradient of the angular displacement sensor mounted; in a specific implementation, the deflection angle of the slat rudder 4 is expressed as:
α＝f(U，k1，k2)/k3。
in one embodiment of the present invention, may be used
The deflection angle of the control surface of the measured slat is calculated.
In the above relational expression or formula for calculating the yaw angle of the slat control surface, α represents the yaw angle of the slat control surface, U represents the output voltage of the angular displacement sensor, k1 represents the proportional factor of the rotation angle of the slat drive train end rotation actuator and the yaw angle of the slat control surface, k2 represents the deceleration ratio of the gear reduction mechanism, and k3 represents the gradient of the angular displacement sensor.
The embodiment of the invention provides a device and a method for measuring deflection angle of a control surface of a slat. The technical scheme of the invention can realize the measurement of the deflection angle of the control surface of the flap slat of a large-scale airplane, for example, the technical scheme of the invention adopts an angular displacement sensor and a gear reduction mechanism as basic measurement components, overcomes the defects that the conventional measurement method cannot measure the deflection angle of the control surface of the flap slat, which has a complex structure, various motion forms and limited spatial layout, has simple and effective design, and can accurately measure the deflection angle of the control surface of the flap slat.
The following describes an embodiment of a device and a method for measuring deflection angle of a control surface of a slat according to an embodiment of the present invention with a specific implementation example.
As shown in fig. 1, taking the measurement of the deflection angle of the slat of the airplane as an example, the method for measuring the deflection angle of the control surface of the slat provided by the specific implementation example of the present invention includes the following steps:
step one, a gear reduction mechanism 2 is installed on a rotary actuator 1 for driving a slat to be folded and unfolded, and then an angular displacement sensor 3 is installed at the other end of the gear reduction mechanism 2, so that a measuring device is formed, as shown in fig. 1.
Here, as the internal transmission shaft of the rotary actuator 1 rotates, the flap control surface 4 is driven to retract and release, and simultaneously the rear gear reduction mechanism 2 and the angular displacement sensor 3 are also driven to rotate together. According to the control plane deflection angle measuring method of the present embodiment example, it is possible to detect the output voltage of the angular displacement sensor 3 next, and then obtain the control plane deflection angle from at least the detected output voltage.
For example, in one embodiment, the measured deflection angle of the slat control surface 4 is proportional to the output voltage of the angular displacement sensor 3, and the obtained deflection angle of the slat control surface 4 may be specifically expressed as: α = k2 f (U, k1, k 3).
In addition to being related to the detected output voltage, in various embodiments, the degree of deflection of the slat control surface 4 may be determined according to one or more of the following, such as, but not limited to:
for example, in another embodiment, the measured deflection angle of the slat control surface 4 may be proportional to the reduction ratio of the gear reduction mechanism 2, and the obtained deflection angle of the slat control surface 4 may specifically be expressed as:
α＝k2*f(U，k1，k3)；
for example, in yet another embodiment, the measured deflection angle of the slat control surface 4 may be inversely proportional to a scaling factor of the rotation angle of the slat drive train end rotation actuator 1 and the deflection angle of the slat control surface 4, and the resulting deflection angle of the slat control surface 4 may be specifically expressed as:
α＝f(U，k2，k3)/k1；
for example, in yet another embodiment, the measured deflection angle of the slat control surface 4 may be inversely proportional to the gradient of the angular displacement sensor 3, and the resulting deflection angle of the slat control surface 4 may be specifically expressed as:
α＝f(U，k1，k2)/k3。
the principle of deriving the control plane deflection angle from the detected output voltage of the angular displacement sensor is explained below, continuing with the schematic diagram in fig. 1.
Firstly, when the flap slat control surface deflects by any angle α, according to the proportional relationship between the rotation angle of the tail end rotation actuator of the flap slat transmission line system and the deflection angle of the flap slat control surface, it can be known that:
β＝α*k1； (1)
in formula (1):
α: the deflection angle of the control surface of the slat;
beta: the rotation angle of the actuator is rotated for the tail end of the slat transmission line system;
k1: and the scale factor is the rotation angle of the tail end rotation actuator of the slat transmission line system and the deflection angle of the control surface of the slat.
The rotation angle of the rotary actuator 1 at the tail end of the slat transmission line system is reduced through the gear reduction mechanism 2 and then transmitted to the angular displacement sensor, and then the following results are obtained:
in formula (2):
γ: the rotation angle of the angular displacement sensor;
k2: is the reduction ratio of the gear reduction mechanism.
According to the working principle of the angular displacement sensor 3, the following steps are known:
U＝γ*k3； (3)
in formula (3):
u: outputting voltage for the angular displacement sensor;
k3: is the angular displacement sensor gradient.
Substituting the formula (1) into the formula (2) to obtain
Substituting the formula (4) into the formula (3), and obtaining the deflection angle of the control surface of the slat by sorting:
according to the formula (5) obtained by reasoning, the deflection angle alpha of the control surface can be in direct proportion to the output voltage of the angular displacement sensor; may be proportional to the reduction ratio of the gear reduction mechanism; the proportional factor of the rotation angle of the rotary actuator at the tail end of the slat transmission line system and the deflection angle of the control surface of the slat can be inversely proportional; and may be inversely proportional to the gradient of the angular displacement sensor. Thus, in the case where the angular displacement sensor output voltage U is measured, the flap control surface yaw angle can be calculated (estimated) in accordance with the above-described proportional or inverse relationship. Alternatively, in one embodiment, equation (5) may be used directly to obtain the rudder plane deflection angle.
According to the method for measuring the deflection angle of the control surface of the slat of the large airplane, the deflection angle of the control surface of the slat of the large airplane can be measured, the defects that the deflection angle of the control surface of the slat of the large airplane with a complex structure, various motion forms and limited space layout cannot be measured by a conventional measuring method are overcome, and the method is simple and effective in design and can accurately measure the deflection angle of the control surface of the slat.
Although the embodiments of the present invention have been described above, the above description is only for the purpose of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A measurement device for deflection angle of a flap strip control surface is applied to measurement of deflection angle of a flap strip control surface of a large airplane, and comprises: the device comprises a rotary actuator (1), a gear reduction mechanism (2) and an angular displacement sensor (3);
the rotary actuator (1) is connected with the slat control surface (4), the front end of the rotary actuator is mounted at the tail end of the slat transmission line system, the rear end of the rotary actuator (1) is provided with a gear reduction mechanism (2), and the angular displacement sensor (3) is connected with the gear reduction mechanism (2);
the rotary actuator (1) is used for driving a slat control surface (4) to deflect at a specified angle according to the control of the high lift control system;
the gear speed reducing mechanism (2) is used for reducing the rotation of the front end rotary actuator (1), transmitting the rotation to the angular displacement sensor (3) at the rear end of the gear speed reducing mechanism, and driving the angular displacement sensor (3) to rotate at a reduced rotation angle;
the angular displacement sensor (3) is used for converting the rotation angle of the angular displacement sensor into output voltage and transmitting the output voltage to the high-lift control system;
the high lift control system is used for obtaining the deflection angle of the slat control surface (4) at least according to the received output voltage of the angular displacement sensor (3);
wherein the obtaining of the deflection angle of the slat control surface (4) at least from the received output voltage of the angular displacement sensor (3) has at least one of the following proportional relationships:
the deflection angle of the control surface (4) of the slat is in direct proportion to the output voltage of the installed angular displacement sensor (3);
the deflection angle of the slat control surface (4) is in inverse proportion to the gradient of the mounted angular displacement sensor (3);
the deflection angle of the slat control surface (4) is in direct proportion to the reduction ratio of the installed gear reduction mechanism (2);
the deflection angle of the flap control surface (4) is inversely proportional to the ratio of the rotation angle of the rotary actuator (1) to the scaling factor of the deflection angle of the flap control surface (4).
2. A method for measuring deflection angle of a control surface of a slat is characterized by comprising the following steps:
step 1, installing a gear reduction mechanism (2) at the rear end of a rotary actuator (1), and connecting an angular displacement sensor (3) with the gear reduction mechanism to form the device for measuring the deflection angle of the control surface of the slat according to claim 1, wherein the rotary actuator (1) is a rotary actuator installed at the tail end of a slat transmission line system;
step 2, sending a control instruction to the rotary actuator (1) through the high lift control system, so that the rotary actuator (1) drives the slat control surface (4) to deflect at a specified angle;
step 3, converting the rotation angle reduced by the gear reduction mechanism (2) into output voltage by the angular displacement sensor (3), and transmitting the output voltage to the high lift control system;
and 4, obtaining the deflection angle of the flap control surface (4) by the high lift control system at least according to the received output voltage.
3. The method for measuring the deflection angle of the slat control surface according to claim 2, wherein the deflection angle of the slat control surface (4) obtained in the step 4 is proportional to the output voltage of the installed angular displacement sensor (3), and the deflection angle of the slat control surface (4) is expressed as:
α＝U*f(k1，k2，k3)；
wherein alpha represents the deflection angle of the slat control surface (4), U represents the output voltage of the angular displacement sensor (3), k1 represents the proportion factor of the rotation angle of the slat drive line end rotation actuator (1) and the deflection angle of the slat control surface (4), k2 represents the deceleration ratio of the gear reduction mechanism (2), and k3 represents the gradient of the angular displacement sensor (3).
4. Method for measuring the deflection angle of a slat rudder according to claim 2, characterised in that the deflection angle of the slat rudder (4) obtained in step 4 is inversely proportional to the gradient of the installed angular displacement sensor (3), the deflection angle of the slat rudder (4) being expressed as:
α＝f(U，k1，k2)/k3；
wherein alpha represents the deflection angle of the slat control surface (4), U represents the output voltage of the angular displacement sensor (3), k1 represents the proportion factor of the rotation angle of the slat drive line end rotation actuator (1) and the deflection angle of the slat control surface (4), k2 represents the deceleration ratio of the gear reduction mechanism (2), and k3 represents the gradient of the angular displacement sensor (3).
5. Method for measuring the deflection angle of a slat control surface according to claim 2, characterized in that the deflection angle of the slat control surface (4) obtained in step 4 is proportional to the reduction ratio of the installed gear reduction mechanism (2), the deflection angle of the slat control surface (4) being expressed as:
α＝k2*f(U，k1，k3)；
wherein alpha represents the deflection angle of the slat control surface (4), U represents the output voltage of the angular displacement sensor (3), k1 represents the proportion factor of the rotation angle of the slat drive line end rotation actuator (1) and the deflection angle of the slat control surface (4), k2 represents the deceleration ratio of the gear reduction mechanism (2), and k3 represents the gradient of the angular displacement sensor (3).
6. Method for measuring the deflection angle of a slat control surface according to claim 2, characterized in that the deflection angle of the slat control surface (4) obtained in step 4 is inversely proportional to the ratio of the rotation angle of the rotary actuator (1) and the scaling factor of the deflection angle of the slat control surface (4), the deflection angle of the slat control surface (4) being expressed as:
α＝f(U，k2，k3)/k1；
wherein alpha represents the deflection angle of the slat control surface (4), U represents the output voltage of the angular displacement sensor (3), k1 represents the proportion factor of the rotation angle of the slat drive line end rotation actuator (1) and the deflection angle of the slat control surface (4), k2 represents the deceleration ratio of the gear reduction mechanism (2), and k3 represents the gradient of the angular displacement sensor (3).
7. The method for measuring the deflection angle of the slat control surface according to any one of claims 2 to 6, wherein the deflection angle of the slat control surface (4) is estimated according to the proportional relation between the deflection angle of the slat control surface (4) and the output voltage of an angular displacement sensor (3), the gradient of the angular displacement sensor (3), the reduction ratio of a gear reduction mechanism (2) or the proportional factor.
8. Method for measuring the deflection angle of a slat control surface according to any of claims 2 to 6, characterized in that the deflection angle of the slat control surface (4) obtained in step 4 is:
wherein alpha represents the deflection angle of the slat control surface (4), U represents the output voltage of the angular displacement sensor (3), k1 represents the proportion factor of the rotation angle of the slat drive line end rotation actuator (1) and the deflection angle of the slat control surface (4), k2 represents the deceleration ratio of the gear reduction mechanism (2), and k3 represents the gradient of the angular displacement sensor (3).
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