CN113093002A - Factory calibration method for unmanned aerial vehicle power test board - Google Patents
Factory calibration method for unmanned aerial vehicle power test board Download PDFInfo
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Abstract
The invention provides a factory calibration method of an unmanned aerial vehicle power test board, wherein the unmanned aerial vehicle power test board comprises a tension test device, a torque test device, a propeller fixing device, a test board main beam and a data acquisition system; the tension testing device comprises a linear bearing seat, a linear bearing and a tension sensor; the torque testing device comprises a torque sensor and a torque beam; the propeller fixing device comprises a motor mounting seat, a motor and a propeller, the data acquisition system comprises a rotating speed sensor, a temperature sensor and a current and voltage detection sensor, the data acquisition system further comprises a computer, the computer comprises power test board software, and the computer is connected with the unmanned aerial vehicle power test board system through a wireless network. The method has important significance for standardizing the power test products of the unmanned aerial vehicle, can reduce blind monitoring of personnel, can be applied to factory calibration of other similar products, and accelerates research and development of related products.
Description
Technical Field
The invention belongs to the technical field of unmanned aerial vehicle power test, and particularly relates to a factory calibration method for an unmanned aerial vehicle power test board.
Background
Along with the development of aviation technology, unmanned aerial vehicles are applied more and more widely in reality at present, and are regarded as a novel field of future aviation industry. In order to improve the flight efficiency of the unmanned aerial vehicle, the shape, the aerodynamic parameters, the adopted airfoil profile, the aspect ratio, the wing area and the like of the aircraft are designed, and the power of the aircraft also needs to be selected and matched. Aiming at the selection and the matching of the power of the unmanned aerial vehicle, the research and development of the power test platform of the unmanned aerial vehicle is a universal tool. Furthermore, more importantly, the unmanned aerial vehicle power test board formed at present needs to be subjected to factory calibration before use, so that the measurement accuracy is improved. Therefore, a standardized detection process needs to be developed to improve the measurement accuracy of the power test bench of the unmanned aerial vehicle.
Disclosure of Invention
In view of the fact that the market demand of the existing unmanned aerial vehicle power test tables is very large, but calibration methods of the unmanned aerial vehicle power test tables in the market are different and need to be integrated and eliminated, and on the other hand, an industry approval standard needs to be formed for factory leaving of unmanned aerial vehicle products, so that rapid iteration of the industry is accelerated, the productivity is improved, and the innovation of science and technology is promoted. Therefore, the invention provides a factory calibration method for the unmanned aerial vehicle power test board.
The specific technical scheme is as follows:
a factory calibration method of an unmanned aerial vehicle power test board comprises an unmanned aerial vehicle power test board system, wherein the unmanned aerial vehicle power test board system comprises a tension test device, a torque test device, a propeller fixing device, a test board main beam (12) and a data acquisition system; the tension testing device comprises a linear bearing seat (8), a linear bearing (9) and a tension sensor (10); the torque testing device comprises a torque sensor (1) and a torque beam (3); the propeller fixing device comprises a motor mounting seat (6), a motor (4) and a propeller (5); the data acquisition system comprises a rotating speed sensor, a temperature sensor and a current and voltage detection sensor; the tension testing device is fixedly connected with the propeller fixing device; the torque testing device is connected with the propeller fixing device through a torque beam fixing frame (7); the tension testing device and the torque testing device are fixedly installed on a test board main beam (12), the motor (4) is connected with a data acquisition system through an electric adjusting signal line, the test board device further comprises a computer, the computer comprises power test board software, the computer is connected with an unmanned aerial vehicle power test board system through a wireless network, and the calibration method comprises the following steps:
s1, checking the screw thread assembly of the motor and the propeller of the unmanned aerial vehicle power test platform system, wherein the specific checking method comprises the following steps: the bolt is positively screwed down by using the inner hexagonal screwdriver, if the bolt can be screwed, the bolt is dismounted, the thread glue is smeared again, and the bolt is installed back to the original position;
s2, lubricating the linear bearing (9): spraying an ultra-low viscosity lubricant of graphene into an oil injection port of the linear bearing (9);
s3, checking the tension sensor (10): applying external force to a head component of the unmanned aerial vehicle power test board system by adopting a simple hook-type tensile machine and hanging standard weights to obtain tensile force data of the simple hook-type tensile machine and data of a tensile force sensor (10), comparing the data of the simple hook-type tensile machine and the data of the tensile force sensor (10), and if the difference value of the tensile force data and the data of the tensile force sensor is less than or equal to 500g under the tensile force of 10kgf, determining that the data is qualified; if the difference value of the two is more than 500g, the damage of the tension sensor (10) is proved;
s4, test torque sensor (1): closing the unmanned aerial vehicle power test bench system, unplugging the torque sensor (1), restarting the unmanned aerial vehicle power test bench system, connecting the computer with the unmanned aerial vehicle power test bench system through a wireless network, displaying a torque value of power test bench software to be zero, installing the torque sensor (1) on the unmanned aerial vehicle power test bench system, if the torque value displayed by the power test bench software is zero, the torque sensor (1) is normal, otherwise, the torque sensor (1) is damaged;
s5, calibrating the current and voltage detection sensor: and switching on a power supply, monitoring the voltage and the current value of the unmanned aerial vehicle power test platform system in real time by using unmanned aerial vehicle power system control software on a computer, comparing the measured value with the measured value of a high-precision universal meter, and if the difference value of the voltage is less than or equal to 0.5 percent and the difference value of the current is less than or equal to 1 percent, determining that the unmanned aerial vehicle power test platform system is qualified, otherwise, determining that the unmanned aerial vehicle power.
Preferably, before the calibration of the unmanned aerial vehicle power test stand, the following operation procedures need to be completed:
SS1, zero clearing tension sensor (10) and torque sensor (1): keeping a main shaft of a motor (4) parallel to the ground, resetting the value of a tension sensor (10) on computer power test bed software, keeping the balance of the position of a propeller (5) blade, and resetting the value of a torque sensor (1) on computer power test bed software;
SS2, clear airspeed reading of airspeed meter: mounting an airspeed head on an unmanned aerial vehicle power test board system, wherein the mounting direction is the same as the axial direction of a motor, covering the airspeed head by using an airspeed head sleeve in a windless environment, and resetting airspeed readings of the airspeed head on computer power test board software;
SS3, zero current value: restarting the unmanned aerial vehicle power test board system;
SS4, data auto save confirm: and electrifying the unmanned aerial vehicle power test platform system, adjusting the input quantity of an accelerator to realize the calculation of the propeller power effect and the system input power under different currents and voltages, and checking whether the data is automatically stored in the computer power test platform software after the test is finished.
Preferably, the torque testing device further comprises a torque sensor mounting plate (11), and the torque sensor (1) is fixed on the test bench main beam (12) through the torque sensor mounting plate (11).
Preferably, the torque testing device further comprises a torque sensor fixing piece (2), and the torque sensor fixing piece (2) is fixed on the torque sensor (1).
Preferably, a shock absorption column is installed on the motor installation seat (6).
Preferably, the unmanned aerial vehicle power test bench system head assembly comprises a motor (4), a motor mounting seat (6) and a tension sensor (10).
Preferably, the propeller power efficiency is a pulling force/motor output, and the system input power is a voltage current.
Compared with the prior art, the factory calibration method for the unmanned aerial vehicle power test board has the following advantages:
the factory calibration method for the unmanned aerial vehicle power test board has important significance for standardizing unmanned aerial vehicle power test products, can reduce blind monitoring of personnel, can be applied to factory calibration of other similar products, and accelerates research and development of related products.
Drawings
Fig. 1 is an overall schematic diagram of an unmanned aerial vehicle power test stand according to the present invention;
fig. 2 is a left side view of the power test stand of the unmanned aerial vehicle according to the present invention;
fig. 3 is a schematic diagram of modules used in a factory calibration method for an unmanned aerial vehicle power test stand according to the present invention;
fig. 4 is an exploded view of a base of the power test stand of an unmanned aerial vehicle according to the present invention;
fig. 5 is a flowchart of a factory calibration method for an unmanned aerial vehicle power test stand according to the present invention;
FIG. 6 is a software interface diagram of a power test stand.
Description of reference numerals:
1 torque sensor, 2 torque sensor fixing pieces, 3 torque beams, 4 motors, 5 propellers, 6 motor mounting seats, 7 torque beam fixing frames, 8 linear bearing seats, 9 linear bearings, 10 tension sensors, 11 torque sensor mounting plates, 12 test bench, main beam, 13 tension sensor mounting plates
Detailed Description
The technical means of the present invention will be described in further detail with reference to specific embodiments. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular direction, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
A factory calibration method of an unmanned aerial vehicle power test bench comprises an unmanned aerial vehicle power test bench system, as shown in figures 1 and 2, wherein the unmanned aerial vehicle power test bench system comprises a tension test device, a torque test device, a propeller fixing device, a test bench main beam (12) and a data acquisition system; the tension testing device comprises a linear bearing seat (8), a linear bearing (9) and a tension sensor (10); the torque testing device comprises a torque sensor (1) and a torque beam (3); the propeller fixing device comprises a motor mounting seat (6), a motor (4) and a propeller (5); the data acquisition system comprises a rotating speed sensor, a temperature sensor and a current and voltage detection sensor; the tension testing device is fixedly connected with the propeller fixing device; the torque testing device is connected with the propeller fixing device through a torque beam fixing frame (7); the tension testing device and the torque testing device are fixedly installed on a main beam (12) of the testing platform, the motor (4) is connected with the data acquisition system through an electric modulation signal line, as shown in figure 3, the invention also comprises a computer, the computer comprises power testing platform software, the computer is connected with the power testing platform system of the unmanned aerial vehicle through a wireless network, figure 5 is a flow chart of a factory calibration method of the power testing platform of the unmanned aerial vehicle, and the specific method is as follows:
the frame installation of unmanned aerial vehicle power test platform is accomplished at first, as shown in fig. 4, specifically for the base of unmanned aerial vehicle power test platform, adopts standard aluminium alloy, via the 45 supports of standard, M8 screw fixation, assembles unmanned aerial vehicle power test platform base. And then, fixing the right-angle bracket above the center of the base by using a standard part, and finally completing the frame installation of the unmanned aerial vehicle power test bench. Secondly, the installation of a power system specifically comprises the following steps: the installation and the fixed of screw, the installation and the fixed of motor. Specifically, the propeller is installed on a fixed end plate and is fixedly connected with the motor through a bolt and a screw, the tension sensor and the motor are coaxially installed, and the torque sensor is installed on a fixed right-angle support. In addition, the detection of a rotating speed sensor, a temperature sensor and current and voltage is integrated in a data acquisition system. The electric adjusting signal wire is connected with the motor through one end of the standard electric adjusting signal wire, the other end of the standard electric adjusting signal wire is connected with the data acquisition system, and the electric adjusting signal wire is mainly used for measuring the rotating speed of the motor.
In order to achieve the purpose, the invention adopts the following test bench calibration scheme to achieve the purpose of engineering application:
before detection, all sensors need to be installed, including installation of a tension sensor, a torque sensor and a data acquisition system. Then, the software of the power test platform of the computer is opened, the software interface is as shown in fig. 6, and the wireless data transmission receiving module is inserted into the computer through the wireless data transmission module of the test platform, so that the system of the power test platform of the unmanned aerial vehicle is connected with the software of the computer. The parameters displayed by the computer software comprise voltage, current, tension and torque, whether the sensors have numerical values to display or not is observed, and the specific operation flow is as follows:
s1, clearing tension sensor (10) and torque sensor (1): keeping a main shaft of a motor (4) parallel to the ground, resetting the value of a tension sensor (10) on computer power test bed software, keeping the balance of the position of a propeller (5) blade, and resetting the value of a torque sensor (1) on computer power test bed software;
s2, clearing the airspeed value reading of the airspeed meter: mounting an airspeed head on an unmanned aerial vehicle power test board system, wherein the mounting direction is the same as the axial direction of a motor, covering the airspeed head by using an airspeed head sleeve in a windless environment, and resetting airspeed readings of the airspeed head on computer power test board software;
s3, zero current value: restarting the unmanned aerial vehicle power test board system;
s4, automatic data storage and confirmation: and electrifying the unmanned aerial vehicle power test bench system, adjusting the input quantity of an accelerator to realize the calculation of the propeller power effect and the system input power under different currents and voltages, wherein the propeller power effect is output by a tension/motor, the system input power is output by a voltage, and after the test is finished, checking whether the data is automatically stored in the computer power test bench software.
After the above 4 steps of operations are initially completed, the following factory calibration needs to be performed. On one hand, accurate measurement data need to be given to an unmanned aerial vehicle power test board fixed at the ground end; on the other hand, for the unmanned aerial vehicle power test board at the airborne end, once the aircraft has severe impact behaviors on the sensor, such as heavy landing, severe vibration, and slumping, the sensor is self-checked and calibrated, specifically, a standard weight with known weight, such as 1kg, is used for measuring the tensile force, and whether the measured tensile force value is 9.8N (the error is +/-0.3N) is detected. If the error range is met, the measurement is accurate.
And then, calibrating the unmanned aerial vehicle power test bench system, wherein the specific calibration method comprises the following steps:
SS1, to the screw thread assembly of the motor of unmanned aerial vehicle power testboard system, screw and inspect, the concrete inspection method is: the bolt is positively screwed down by using the inner hexagonal screwdriver, if the bolt can be screwed, the bolt is dismounted, the thread glue is smeared again, and the bolt is installed back to the original position;
SS2, lubricated linear bearing (9): spraying an ultra-low viscosity lubricant of graphene into an oil injection port of the linear bearing (9);
SS3, inspection tension sensor (10): the method comprises the following steps of applying an external force to a head assembly of an unmanned aerial vehicle power test table system by adopting a simple hook-type tensile machine and hanging standard weights, wherein the head assembly of the unmanned aerial vehicle power test table system comprises a motor (4), a motor mounting seat (6) and a tension sensor (10), obtaining tension data of the simple hook-type tensile machine and data of the tension sensor (10), comparing the data of the simple hook-type tensile machine and the data of the tension sensor, and determining the simple hook-type tensile machine to be qualified if the difference value between the simple hook-type tensile machine and the tension sensor is less than or equal; if the difference value of the two is more than 500g, the damage of the tension sensor (10) is proved;
SS4, check torque sensor (1): closing the unmanned aerial vehicle power test bench system, unplugging the torque sensor (1), restarting the unmanned aerial vehicle power test bench system, connecting the computer with the unmanned aerial vehicle power test bench system through a wireless network, displaying a torque value of power test bench software to be zero, installing the torque sensor (1) on the unmanned aerial vehicle power test bench system, if the torque value displayed by the power test bench software is zero, the torque sensor (1) is normal, otherwise, the torque sensor (1) is damaged;
SS5, calibration current voltage detection sensor: and switching on a power supply, monitoring the voltage and the current value of the unmanned aerial vehicle power test platform system in real time by using unmanned aerial vehicle power system control software on a computer, comparing the measured value with the measured value of a high-precision universal meter, and if the difference value of the voltage is less than or equal to 0.5 percent and the difference value of the current is less than or equal to 1 percent, determining that the unmanned aerial vehicle power test platform system is qualified, otherwise, determining that the unmanned aerial vehicle power.
In the invention, the torque testing device also comprises a torque sensor mounting plate (11) and a torque sensor fixing piece (2), the torque sensor (1) is fixed on a main beam (12) of the testing platform through the torque sensor mounting plate (11), and the torque sensor fixing piece (2) is fixed on the torque sensor (1).
And the motor mounting seat (6) is provided with a shock absorption column.
In view of the fact that the existing unmanned aerial vehicle power test board has great market demand, and part of the way for obtaining the unmanned aerial vehicle power test board is based on manufacturers with research and development capabilities (unmanned aerial vehicle research and development manufacturers, propeller, motor and electric regulation research and development manufacturers), the unmanned aerial vehicle power test board is designed and assembled simply by self; and one part is developed through a special research and development unit by using the unmanned aerial vehicle test bench with multiple models in batches. Wherein, the smart wing air navigation Limited market performance is most outstanding, has developed many models of unmanned aerial vehicle power test platform, including models such as 10KGF, 30KGF, 70KGF, machine dynamic tension testboard, four rotor unmanned aerial vehicle power test, oil dynamic unmanned aerial vehicle testboards. On one hand, for the unmanned aerial vehicle power test board with uneven market, the unmanned aerial vehicle power test board needs to be integrated and eliminated; on the other hand, the unmanned aerial vehicle product needs to be delivered from the factory, and an industry approval standard is formed, so that the rapid iteration of the industry is accelerated, the productivity is improved, and the innovation of science and technology is promoted.
To this kind of unmanned aerial vehicle power test platform, at first accomplish the rack-mount of unmanned aerial vehicle power test platform, specifically be unmanned aerial vehicle power test platform's base, adopt the aluminium alloy of standard, via the 45 supports of standard, M8 screw fixation, assemble into unmanned aerial vehicle power test platform base. And then, fixing the right-angle bracket above the center of the base by using a standard part, and finally completing the frame installation of the unmanned aerial vehicle power test bench. Secondly, installing a power system 1, which specifically comprises the following steps: the installation and the fixed of screw, the installation and the fixed of motor. Specifically, the propeller is installed on a fixed end plate and is fixedly connected with the motor through a bolt and a screw, the tension sensor and the motor are coaxially installed, and the torque sensor is installed on a fixed right-angle support. In addition, the detection of a rotating speed sensor, a temperature sensor and current and voltage is integrated in a data acquisition system. The electric adjusting signal wire is connected with the motor through one end of the standard electric adjusting signal wire, the other end of the standard electric adjusting signal wire is connected with the data acquisition system, and the electric adjusting signal wire is mainly used for measuring the rotating speed of the motor.
In order to achieve the purpose, the invention adopts the following test bench calibration scheme to achieve the purpose of engineering application:
before detection, all sensors need to be installed, including installation of a tension sensor, a torque sensor and a data acquisition system. Then, the unmanned aerial vehicle power test platform software of the computer is opened, a wireless data transmission receiving module is inserted into the computer through a wireless data transmission module of the test platform, and the unmanned aerial vehicle power test platform system is connected with the computer software. The parameters displayed by the computer software comprise voltage, current, tension and torque, whether the sensors have numerical values to display or not is observed, and the specific operation flow is as follows:
first, zero clearing tension, torque: keeping any axial section of the motor parallel to the ground (namely, a main shaft of the motor is parallel to the ground), horizontally oppositely arranging propellers (two blades) (if three blades are arranged, ensuring that a torque sensor is not stressed), and resetting in a stable state;
secondly, the airspeed is reset, the installation direction of the airspeed head is the same as the axis of the motor, and a windless environment can be ensured during indoor measurement; when the air conditioner is outdoors, an airspeed tube sleeve cover can be adopted to ensure a windless environment. Covering an airspeed head with an airspeed head sleeve in a windless environment, and resetting the airspeed head on computer power test board software;
and thirdly, current is reset, and the current supplies power to the power system of the test board as the current passes through the data acquisition system. Therefore, the measured value of the current is the current input by the power system of the test bench. The test system can cause the display of weak current due to different power-on sequences, and the reset current of the restart option can be selected after the power-on if the test is influenced. Specifically, the unmanned aerial vehicle power test board is wirelessly connected with computer software by adopting a wireless data transmission module, the power test system is controlled by the unmanned aerial vehicle power test board software of the computer, and if weak current influences the test, the software end can be restarted to realize the purpose of current zero clearing;
and fourthly, after the test system is electrified, the calculation of the force effect and the power of the motor and the propeller is realized under different currents and voltages by adjusting the input quantity of the accelerator, the test data is stored in real time, and the data is automatically stored in the system after the test is finished.
After the above 4 steps of operations are initially completed, the following factory calibration needs to be performed. On one hand, accurate measurement data need to be given to an unmanned aerial vehicle power test board fixed at the ground end; on the other hand, for the unmanned aerial vehicle power test board at the airborne end, once the aircraft has severe impact behaviors on the sensor, such as heavy landing, severe vibration, and slumping, the sensor is self-checked and calibrated, specifically, a standard weight with known weight, such as 1kg, is used for measuring the tensile force, and whether the measured tensile force value is 9.8N (the error is +/-0.3N) is detected. If the error range is met, the measurement is accurate.
Firstly, the screw thread of the unmanned aerial vehicle power test bench is checked, and the main screw thread part is a power system assembly part, specifically the screw thread assembly of a motor and a propeller: for the threads needing to be added with the thread compound, a hexagon socket screwdriver is used for screwing the bolt in the forward direction, and if the bolt can be screwed easily, the bolt is detached and the thread compound is coated again to be installed to return to the original position; and for the threads without adding thread glue, the bolt is screwed.
Then, linear bearing lubrication: the graphite-grade ultra-low viscosity lubricant is sprayed into an oil filling port of the linear bearing (any high-viscosity or medium-viscosity mechanical lubricating oil cannot be used, otherwise the static friction force during measuring the tensile force is increased, and the measuring precision is reduced).
Then, the tension/torque sensor inspection method: and applying external force to a head component of the power test bench by adopting a simple hook-type tension meter, wherein the head component of the power test bench comprises a motor, an installation end plate and a tension sensor. At the head assembly of the test board, standard weights are directly hung through the simple hook type tension meter, and tension meter data and power test board test data can be obtained simultaneously. Comparing the test bench data with the tensiometer data, it is generally acceptable to show an error of not more than 500g (depending on the way the force is applied) at 10 kgf. (the quality of the tension and torque sensor is very stable and reliable, generally can not damage nor float, as long as the error of the measuring value of the tension meter and the testing platform is less than 500g, the normal work of the tension sensor can be proved, if the error of the measuring value of the tension meter and the testing platform is more than 500g, the damage of the tension sensor is proved). Under the closed state of the test bench, pulling out the sensor, then starting the test bench, connecting the test bench with a computer through the wireless end module, and displaying a torque value of 0 by software at the moment; next, mounting the torque sensor on the test bench, and if the torque value displayed by the software is 0, the torque sensor is normal; if the software shows that the sensor value is very different from 0, it indicates that the torque sensor is damaged.
Finally, the voltage/current sensor calibration method: based on radio data transmission module, unmanned aerial vehicle power testboard is connected with computer software. When the power is connected, the voltage and current values of the power system can be automatically monitored in real time on a computer by directly utilizing the control software of the unmanned power system, the measured values are compared with a high-precision multimeter for testing, and whether the maximum error (the voltage precision is 0.5 percent and the current precision is 1 percent) is exceeded or not is observed.
The invention has the technical effects and advantages that:
the factory calibration method for the unmanned aerial vehicle power test board provided by the invention has the following three advantages: at the present stage, a standard can be given to the uneven unmanned aerial vehicle power test products in the market, some backward products are eliminated, and the method has important significance for standardizing the market and improving the technological content of the whole market; the invention provides a set of basic operation flow, which can be used as a reference for the industry, can reduce blind monitoring of related employees, and improve the efficiency of the whole unmanned aerial vehicle power testing industry and the industry quality of the personnel; the set of basic factory monitoring standards of the unmanned aerial vehicle power test bench provided by the invention can be applied to factory calibration of other similar products, accelerate research and development of related products and enable the industry.
In conclusion, the factory calibration method for the unmanned aerial vehicle power test bench provided by the invention has important significance for standardizing unmanned aerial vehicle power test products, can reduce blind monitoring of personnel, and can be applied to factory calibration of other similar products, thereby accelerating research and development of related products.
The above embodiments are all preferred embodiments of the present invention, and therefore do not limit the scope of the present invention. Any equivalent structural and equivalent procedural changes made to the present disclosure without departing from the spirit and scope of the present disclosure are within the scope of the present disclosure as claimed.
Claims (7)
1. A factory calibration method of an unmanned aerial vehicle power test board comprises an unmanned aerial vehicle power test board system, wherein the unmanned aerial vehicle power test board system comprises a tension test device, a torque test device, a propeller fixing device, a test board main beam (12) and a data acquisition system; the tension testing device comprises a linear bearing seat (8), a linear bearing (9) and a tension sensor (10); the torque testing device comprises a torque sensor (1) and a torque beam (3); the propeller fixing device comprises a motor mounting seat (6), a motor (4) and a propeller (5); the data acquisition system comprises a rotating speed sensor, a temperature sensor and a current and voltage detection sensor; the tension testing device is fixedly connected with the propeller fixing device; the torque testing device is connected with the propeller fixing device through a torque beam fixing frame (7); the tension testing device and the torque testing device are fixedly installed on a main beam (12) of the testing platform, and the motor (4) is connected with the data acquisition system through an electric adjusting signal line, and the tension testing device and the torque testing device are characterized by further comprising a computer, wherein the computer comprises power testing platform software, the computer is connected with an unmanned aerial vehicle power testing platform system through a wireless network, and the calibration method comprises the following steps:
s1, checking the screw thread assembly of the motor and the propeller of the unmanned aerial vehicle power test platform system, wherein the specific checking method comprises the following steps: the bolt is positively screwed down by using the inner hexagonal screwdriver, if the bolt can be screwed, the bolt is dismounted, the thread glue is smeared again, and the bolt is installed back to the original position;
s2, lubricating the linear bearing (9): spraying an ultra-low viscosity lubricant of graphene into an oil injection port of the linear bearing (9);
s3, checking the tension sensor (10): applying external force to a head component of the unmanned aerial vehicle power test board system by adopting a simple hook-type tensile machine and hanging standard weights to obtain tensile force data of the simple hook-type tensile machine and data of a tensile force sensor (10), comparing the data of the simple hook-type tensile machine and the data of the tensile force sensor (10), and if the difference value of the tensile force data and the data of the tensile force sensor is less than or equal to 500g under the tensile force of 10kgf, determining that the data is qualified; if the difference value of the two is more than 500g, the damage of the tension sensor (10) is proved;
s4, test torque sensor (1): closing the unmanned aerial vehicle power test bench system, unplugging the torque sensor (1), restarting the unmanned aerial vehicle power test bench system, connecting the computer with the unmanned aerial vehicle power test bench system through a wireless network, displaying a torque value of power test bench software to be zero, installing the torque sensor (1) on the unmanned aerial vehicle power test bench system, if the torque value displayed by the power test bench software is zero, the torque sensor (1) is normal, otherwise, the torque sensor (1) is damaged;
s5, calibrating the current and voltage detection sensor: and switching on a power supply, monitoring the voltage and the current value of the unmanned aerial vehicle power test platform system in real time by using unmanned aerial vehicle power system control software on a computer, comparing the measured value with the measured value of a high-precision universal meter, and if the difference value of the voltage is less than or equal to 0.5 percent and the difference value of the current is less than or equal to 1 percent, determining that the unmanned aerial vehicle power test platform system is qualified, otherwise, determining that the unmanned aerial vehicle power.
2. The factory calibration method for the unmanned aerial vehicle power test stand according to claim 1, wherein the following operation procedures are required to be completed before the unmanned aerial vehicle power test stand is calibrated:
SS1, zero clearing tension sensor (10) and torque sensor (1): keeping a main shaft of a motor (4) parallel to the ground, resetting the value of a tension sensor (10) on computer power test bed software, keeping the balance of the position of a propeller (5) blade, and resetting the value of a torque sensor (1) on computer power test bed software;
SS2, clear airspeed reading of airspeed meter: mounting an airspeed head on an unmanned aerial vehicle power test board system, wherein the mounting direction is the same as the axial direction of a motor, covering the airspeed head by using an airspeed head sleeve in a windless environment, and resetting airspeed readings of the airspeed head on computer power test board software;
SS3, zero current value: restarting the unmanned aerial vehicle power test board system;
SS4, data auto save confirm: and electrifying the unmanned aerial vehicle power test platform system, adjusting the input quantity of an accelerator to realize the calculation of the propeller power effect and the system input power under different currents and voltages, and checking whether the data is automatically stored in the computer power test platform software after the test is finished.
3. The factory calibration method for the unmanned aerial vehicle power test stand according to claim 1, wherein the torque testing device further comprises a torque sensor mounting plate (11), and the torque sensor (1) is fixed on a main beam (12) of the test stand through the torque sensor mounting plate (11).
4. The factory calibration method for the unmanned aerial vehicle power test stand according to claim 1, wherein the torque test device further comprises a torque sensor fixing plate (2), and the torque sensor fixing plate (2) is fixed on the torque sensor (1).
5. The factory calibration method for the unmanned aerial vehicle power test stand according to claim 1, wherein a shock absorption column is installed on the motor installation seat (6).
6. The factory calibration method for the unmanned aerial vehicle power test stand according to claim 1, wherein the unmanned aerial vehicle power test stand system head assembly comprises a motor (4), a motor mounting seat (6) and a tension sensor (10).
7. The factory calibration method for the unmanned aerial vehicle power test stand according to claim 1, wherein the propeller power efficiency is a tension/motor output, and the system input power is a voltage/current.
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