CN109795716B - Universal small steering engine frequency sweep test equipment and method - Google Patents
Universal small steering engine frequency sweep test equipment and method Download PDFInfo
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Abstract
The invention relates to a universal small steering engine frequency sweep test platform, which comprises: the device comprises a measurement and control computer, a measurement and control board card, a steering engine to be tested, an angular displacement sensor, a direct current power supply and a steering engine test platform. And the measurement and control software is installed and set in the measurement and control computer, and the measurement and control board card transmits a command signal to the steering engine to be tested to drive the control surface to simulate the deflection of the rocker arm. The angular displacement sensor measures angular displacement signals of the control surface simulation rocker arm, and the angular displacement signals are transmitted to the measurement and control computer through the measurement and control board card. The steering engine test platform is powered by a 5V direct current power supply. The invention can test different steering engines, can simulate different control surface quality and torque, can simulate different pneumatic loads, can control the deflection angle of the steering engine, and has good universality. The sweep frequency investigates the sweep frequency characteristic of the steering engine, and the characteristic has important significance in the field of pneumatic servo elasticity.
Description
Technical Field
The invention relates to a universal small steering engine frequency sweep test platform, which can test different steering engines, simulate different control plane qualities and torques, simulate different pneumatic loads, control the deflection angle of the steering engine and investigate the frequency sweep performance of the steering engine by frequency sweep, particularly relates to the performance test of an aircraft steering engine, and belongs to the field of aviation machinery and flight control.
Background
The steering engine is a system for controlling the actuation of the wing surface in the aircraft and is a main actuating mechanism for controlling the attitude of the aircraft. Steering engine performance is directly related to the handling performance of the aircraft.
The steering engine performance test mainly comprises the test of the static characteristic and the test of the dynamic characteristic of the steering engine. In the traditional steering engine static performance test, the maximum torque performance of the steering engine is mainly tested by adopting a torsion spring, and the static performance of the steering engine is measured by utilizing the torsion spring that the rotation angle is in direct proportion to the torque output in a certain working range; the traditional steering engine dynamic performance test is mainly used for testing in a no-load state, and mainly relates to steering engine speed, frequency response, precision, linearity, sensitivity and the like.
Considering the mass and the torque of a control surface under the actual flying state of the aircraft, the influence on the performance of the steering engine is generated; on the other hand, aerodynamic forces in different flight states, such as alternating aerodynamic forces generated by airfoil vibration, atmospheric disturbances, gusts and the like, also have an influence on the actual control performance of the steering engine.
In the existing steering engine performance test, the influence of the quality and the torque of a control surface cannot be fully considered, meanwhile, the load generated by aerodynamic force cannot be simulated, the frequency response characteristic of the steering engine under the condition of load cannot be tested in the steering engine dynamic test, in addition, the steering engine test relates to a plurality of parameters, and a universal steering engine test platform considering variable parameter test is not provided.
Disclosure of Invention
The invention aims to make up the defects of the existing steering engine testing method, particularly emphasizes the loaded frequency sweeping characteristic of the tested steering engine, and has important significance in the field of pneumatic servo elasticity.
According to one aspect of the invention, the invention provides a universal small-sized steering engine frequency sweep test device, which is characterized by comprising:
a measurement and control computer, a measurement and control board card and a steering engine test platform,
wherein:
steering wheel test platform includes: a base, a linear slide rail, a fastenable slide block, a steering engine fixing bracket to be tested, a control surface simulation bracket, a torsion bar clamp, a torsion bar, a control surface simulation rocker arm, a steering engine control surface connecting rod, a bearing, an angular displacement sensor, a steering engine rocker arm, a steering engine to be tested, a steering engine fastening clamp,
the linear slide rail is connected with the base,
the fastenable sliding block is fastened on the linear sliding rail through the tightening screw,
the steering engine fixing bracket to be tested, the control surface simulation bracket and the torsion bar clamp are respectively connected with the corresponding fastenable slide blocks,
the control surface simulation rocker arm is fastened at the fixed end of the torsion bar through a screw,
the torsion bar clamp clamps the slip end of the torsion bar with a bolt,
the angular displacement sensor is connected with the control surface simulation bracket,
the control surface simulation rocker arm is connected with the control surface simulation bracket through a bearing,
the control surface simulation rocker arm is connected with the steering engine rocker arm through a steering engine control surface connecting rod,
the steering engine to be tested is connected with the rocker arm of the steering engine,
the steering engine fastening clamp fastens the steering engine to be tested on the steering engine fixing support to be tested,
the measurement and control computer transmits the instruction signal to the steering engine to be tested through the measurement and control board card to drive the control surface to simulate the swing arm to deflect,
the angular displacement sensor is used for measuring and obtaining an angular displacement signal of the control surface simulation rocker arm, and the angular displacement signal is transmitted to the measurement and control computer through the measurement and control board card.
According to another aspect of the invention, a testing method based on the universal small steering engine frequency sweep testing equipment is provided, which is characterized by comprising the following steps:
the aerodynamic force borne by the control surface is simulated through the torsion bar, and the inertia force of the control surface is simulated through the control surface simulation rocker arm; the moment of the aerodynamic force acting on the control surface on the rotating shaft of the control surface, namely the hinge moment of the control surface, is characterized as follows:
where ρ is the air density, V is the flight velocity, SeArea behind the pivot of the control surface, ceFor corresponding average geometric chord length, Che,δIs the hinge moment coefficient, delta is the deflection angle of the control surface,
let the mass of the wing be mflapThe moment generated by the inertial force of the control surface at the rotating shaft is characterized as follows:
Minertial＝mflapgLg，
b) to the simulation of aerodynamic force and inertial force, through the hinge moment that the rudder face aerodynamic force that the torsion bar simulation steering wheel received produced, torsion bar cross sectional shape is the rectangle, and the height of the rectangular cross section of torsion bar is h, and is wide for b, and the utmost inertia moment of this rectangular cross section is characterized as:
Ip＝βhb3
wherein β is a rectangular section coefficient, when h/b is 1, β is 0.141,
the torsion bar being at its working length LbeamThe torque produced is characterized as:
wherein the content of the first and second substances,
is the shear modulus of the material, E is the elastic model of the material, μ is the Poisson's ratio, L, of the materialbeamIs the length of the beam or beams,
is the torsion angle of the rectangular beam,
when in use
When in use, the torque generated by the torsion bar unit torsion angle is equal to the hinge moment generated by the control surface unit deflection angle, thereby determining the proper size of the torsion bar and realizing the simulation of the control surface hinge moment,
the control surface inertia force borne by the steering engine is simulated through the balance weight and the designed control surface simulation rocker arm, and the mass m of the balance weightweight＝mflapAnd L isg＝LweightWhen the test platform is used, the inertial force caused by the balance weight on the steering engine is equal to the inertial force generated by the control surface.
Drawings
FIG. 1 is a block diagram of the principle structure of the present invention;
FIG. 2 is an overall view of the steering engine test platform of the present invention;
FIG. 3 is a partial detailed view of a steering engine test platform of the present invention, FIG. 1;
FIG. 4 is a partial detailed view of the steering engine test platform of the present invention, FIG. 2;
FIG. 5 is a schematic diagram of the aerodynamic simulation principle of the control surface of the present invention;
FIG. 6 is a schematic diagram illustrating a principle of the control surface inertia force simulation of the present invention;
FIG. 7 is a testing software interface of the steering engine testing platform according to the present invention;
FIG. 8 shows the effect of the test case of the present invention.
Description of reference numerals:
(1) -base (2) -linear slide rail
(3) -fastenable slide
(4) -steering wheel fixed bolster to be measured
(5) -control surface simulation support (6) -torsion bar clamp (7) -torsion bar
(9) Steering engine control surface connecting rod
(5) Control surface simulation support (7) -torsion bar
(8) Control surface simulation rocker arm
(9) Steering engine control surface connecting rod (10) -bearing
(11) -angular displacement sensor (12) -steering engine rocker arm
(13) -steering engine to be tested
(14) -steering wheel fastening jig.
Detailed Description
According to an embodiment of the invention, a universal small steering engine frequency sweep test device is shown in fig. 1, and is characterized by comprising:
a measurement and control computer, a measurement and control board card and a steering engine test platform,
wherein:
the steering engine test platform is shown in fig. 2, 3 and 4, and comprises: a base (1), a linear slide rail (2), a fastenable slide block (3), a steering engine fixing support (4) to be tested, a control surface simulation support (5), a torsion bar clamp (6), a torsion bar (7), a control surface simulation rocker arm (8), a steering engine control surface connecting rod (9), a bearing (10), an angular displacement sensor (11), a steering engine rocker arm (12), a steering engine (13) to be tested and a steering engine fastening clamp (14),
the linear slide rail (2) is connected with the base (1) through a screw,
the fastenable sliding block (3) is fastened on the linear sliding rail (2) through a tightening screw,
the steering engine fixing bracket (4) to be tested, the control surface simulation bracket (5) and the torsion bar clamp (6) are respectively connected with the corresponding fastenable slide block (3) through screws,
the control surface simulation rocker arm (8) is fastened at the fixed end of the torsion bar (7) through a screw,
the torsion bar clamp (6) clamps the sliding end of the torsion bar (7) by using a bolt,
the angular displacement sensor (11) is connected with the control surface simulation bracket (5) through a bolt,
the control surface simulation rocker arm (8) is connected with the control surface simulation bracket (5) through a bearing (10),
the control surface simulation rocker arm (8) is connected with the steering engine rocker arm (12) through a steering engine control surface connecting rod (9),
the steering engine (13) to be tested is connected with the steering engine rocker arm (12) through a screw,
the steering engine fastening clamp (14) fastens the steering engine (13) to be tested on the steering engine fixing support (4) to be tested through bolts,
according to a further embodiment of the invention, the measurement and control computer transmits a command signal to the steering engine (13) to be tested through the measurement and control board card to drive the control surface to simulate the swing arm (8) to deflect,
the angular displacement sensor (11) is used for measuring and obtaining an angular displacement signal of the control surface simulation rocker arm (8), and the angular displacement signal is transmitted to the measurement and control computer through the measurement and control board card.
According to a further embodiment of the invention, the steering engine test platform is powered by a 5V direct current power supply. As shown in fig. 1.
According to a further embodiment of the invention, the aerodynamic force applied to the control surface is simulated by a torsion bar (7), and the inertial force of the control surface is simulated by a control surface simulation rocker arm (8); the conversion principle of aerodynamic force and inertial force of the control surface is as follows:
a. for the calculation of the aerodynamic and inertial forces of the control surface,
the moment of aerodynamic force acting on the control surface on the rotating shaft of the control surface, namely the hinge moment of the control surface is as follows:
where ρ is the air density, V is the flight velocity, SeArea behind the pivot of the control surface, ceFor corresponding average geometric chord length, Che,δIs the hinge moment coefficient, delta is the deflection angle of the control surface,
provided with wingsMass mflapThe moment generated by the inertial force of the control surface at the rotating shaft is characterized as follows:
Minertial＝mflapgLg， (2)
b. for the simulation of aerodynamic and inertial forces,
through the hinge moment that the rudder face aerodynamic force that torsion bar (7) simulation steering wheel received produced, torsion bar (7) cross sectional shape is the rectangle, and the height of the rectangular cross section of torsion bar (7) is h, and is wide for b, and the polar inertia moment of this rectangular cross section is:
Ip＝βhb3(3)
wherein β is a rectangular section coefficient, when h/b is 1, β is 0.141,
the torsion bar (7) is arranged in the working length LbeamThe torque produced is:
wherein the content of the first and second substances,
is the shear modulus of the material, E is the elastic model of the material, μ is the Poisson's ratio, L, of the materialbeamIs the length of the beam or beams,
is the torsion angle of the rectangular beam,
when in use
In the process, the torque generated by the torsion bar (7) per unit torsion angle is equal to the hinge moment generated by the control surface per unit deflection angle, so that the proper size of the torsion bar (7) is determined, and the simulation of the control surface hinge moment is realized, as shown in fig. 5.
The control surface inertia force borne by the steering engine is simulated through the balance weight and the designed control surface simulation rocker arm (8), and the mass m of the balance weightweight＝mflapAnd L isg＝LweightIn the process, inertia caused by counter weight on the steering engine in the steering engine test platformThe inertia force is equal to the inertia force generated by the control surface. As shown in fig. 6.
According to a further embodiment of the invention, the measurement and control computer comprises a function for providing complete steering engine on-load stepping sine frequency sweeping. The test software frequency sweep signal parameter setting comprises an initial frequency, a termination frequency, a frequency step length, a frequency sweep amplitude and a sampling rate, wherein each frequency step length frequency sweep period is not less than 10 sine periods.
The test method based on the universal small steering engine frequency sweeping test platform comprises the following steps of:
aerodynamic force borne by the control surface is simulated through the torsion bar (7), and inertial force of the control surface is simulated through the control surface simulation rocker arm (8); the conversion principle of aerodynamic force and inertial force of the control surface is as follows:
a) for the calculation of the aerodynamic force and the inertia force of the control surface, the moment of the aerodynamic force acting on the control surface to the rotating shaft of the control surface, namely the hinge moment of the control surface is as follows:
where ρ is the air density, V is the flight velocity, SeArea behind the pivot of the control surface, ceFor corresponding average geometric chord length, Che,δIs the hinge moment coefficient, delta is the deflection angle of the control surface,
let the mass of the wing be mflapThe moment generated by the inertial force of the control surface at the rotating shaft is characterized as follows:
Minertial＝mflapgLg， (6)
b) for the simulation of aerodynamic force and inertial force, the torsion bar (7) is used for simulating the hinge moment generated by the aerodynamic force of a control surface on a steering engine, the section of the torsion bar (7) is rectangular, the height of the rectangular section of the torsion bar (7) is h, the width of the rectangular section of the torsion bar is b, and the polar inertial moment of the rectangular section is as follows:
Ip＝βhb3(7)
wherein β is a rectangular section coefficient, when h/b is 1, β is 0.141,
the torsion bar (7) is arranged in the working length LbeamThe torque produced is:
wherein the content of the first and second substances,
is the shear modulus of the material, E is the elastic model of the material, μ is the Poisson's ratio, L, of the materialbeamIs the length of the beam or beams,
is the torsion angle of the rectangular beam,
when in use
When in use, the torque generated by the torsion bar (7) in unit torsion angle is equal to the hinge moment generated by the control surface in unit deflection angle, thereby determining the proper size of the torsion bar (7) and realizing the simulation of the hinge moment of the control surface,
the control surface inertia force borne by the steering engine is simulated through the balance weight and the designed control surface simulation rocker arm (8), and the mass m of the balance weightweight＝mflapAnd L isg＝LweightWhen the test platform is used, the inertial force caused by the balance weight on the steering engine is equal to the inertial force generated by the control surface.
According to another aspect of the invention, a testing method based on the universal small steering engine frequency sweeping testing equipment is provided, which further comprises the following steps:
the measurement and control computer is used for providing a complete steering engine loaded stepping sine frequency sweeping function, the frequency sweeping signal parameter setting comprises an initial frequency, a termination frequency, a frequency step, a frequency sweeping amplitude and a sampling rate, and the frequency sweeping period of each frequency step is not less than 10 sine periods.
According to another aspect of the invention, a testing method based on the universal small steering engine frequency sweeping testing equipment is provided, which further comprises the following steps: A) fixing a steering engine (13) to be tested on a test platform, and respectively connecting a measurement and control board card with the steering engine (13) to be tested, the measurement and control board card with an angular displacement sensor (11), the measurement and control board card with a measurement and control computer, and a direct current power supply with the test platform through cables; opening a measurement and control computer, a measurement and control board card and a direct-current power switch;
B) the sweep frequency signal parameters are input into a measurement and control computer (default: the initial frequency is 0.2Hz, the termination frequency is 8Hz, the frequency step length is 0.1Hz, the sweep frequency amplitude is 1 degree, and the sampling rate is 50 Hz. ) A test data storage path is set, a start switch on a software interface is clicked, the steering engine test is started, and a data graphic display area reflects real-time sweep frequency signal input and signals acquired by an angular displacement sensor.
C) In the test process, the steering engine is reset to zero and kept for 1 second between the time intervals when the frequency step length of the sweep frequency signal is increased,
and after the test of all the frequencies of the frequency sweeping signals is finished, the steering engine returns to the zero position, and data are stored to the corresponding storage path.
The performance test is carried out on the universal small steering engine frequency sweep test equipment and the test method thereof by using Hitec-7954SH series high-torque digital steering engines, and the frequency sweep signal parameters are set as follows: the initial frequency is set to be 0.2Hz, the termination frequency is set to be 8Hz, the frequency step length is set to be 0.1Hz, the sampling rate is set to be 50Hz, the sweep frequency amplitude is sequentially set to be 1 degree, 2 degrees, 3 degrees, 4 degrees and 5 degrees, and the frequency response curve of the steering engine is drawn according to the 5 groups of test results, as shown in figure 8. In the figure, the amplitude of the steering engine is reduced along with the increase of the frequency, the phase is reversed within the range of 2.5-4Hz, and the phase is consistent with the performance of the steering engine in the actual use process, so that the feasibility of the steering engine and the testing method thereof is well verified.
The advantages of the invention include:
the invention provides a universal test platform for frequency sweep test of a small steering engine and a test method thereof from the practical application aiming at the defects of the existing test platform and test method of the small steering engine. The test platform can simulate the inertia force and aerodynamic force of different control surfaces, is suitable for various steering engines, can realize tests under various amplitudes, and has good universality. The testing method can realize the loaded frequency sweep test of the steering engine, obtain the frequency sweep performance of the steering engine and provide a basis for the model selection of the steering engine.
Claims (8)
1. The utility model provides a general small-size steering wheel frequency sweep test equipment which characterized in that includes:
a measurement and control computer, a measurement and control board card and a steering engine test platform,
wherein:
steering wheel test platform includes: a base (1), a linear slide rail (2), a fastenable slide block (3), a steering engine fixing support (4) to be tested, a control surface simulation support (5), a torsion bar clamp (6), a torsion bar (7), a control surface simulation rocker arm (8), a steering engine control surface connecting rod (9), a bearing (10), an angular displacement sensor (11), a steering engine rocker arm (12), a steering engine (13) to be tested and a steering engine fastening clamp (14),
the linear slide rail (2) is connected with the base (1),
the fastenable sliding block (3) is fastened on the linear sliding rail (2) through a tightening screw,
the steering engine fixing bracket (4) to be tested, the control surface simulation bracket (5) and the torsion bar clamp (6) are respectively connected with the corresponding fastenable slide block (3),
the control surface simulation rocker arm (8) is fastened at the fixed end of the torsion bar (7) through a screw,
the torsion bar clamp (6) clamps the sliding end of the torsion bar (7) by using a bolt,
the angular displacement sensor (11) is connected with the control surface simulation bracket (5),
the control surface simulation rocker arm (8) is connected with the control surface simulation bracket (5) through a bearing (10),
the control surface simulation rocker arm (8) is connected with the steering engine rocker arm (12) through a steering engine control surface connecting rod (9),
the steering engine (13) to be tested is connected with a steering engine rocker arm (12),
the steering engine fastening clamp (14) fastens the steering engine (13) to be tested on the steering engine fixing support (4) to be tested,
the measurement and control computer transmits the instruction signal to the steering engine (13) to be tested through the measurement and control board card to drive the control surface to simulate the deflection of the rocker arm (8),
the angular displacement sensor (11) is used for measuring and obtaining an angular displacement signal of the control surface simulation rocker arm (8), and the angular displacement signal is transmitted to the measurement and control computer through the measurement and control board card.
2. A universal small steering engine frequency sweep test device as claimed in claim 1, wherein:
the steering engine test platform is powered by a 5V direct current power supply.
3. A universal small steering engine frequency sweep test device as claimed in claim 1, wherein:
aerodynamic force borne by the control surface is simulated through the torsion bar (7), and inertial force of the control surface is simulated through the control surface simulation rocker arm (8); the moment of the aerodynamic force acting on the control surface on the rotating shaft of the control surface, namely the hinge moment of the control surface, is characterized as follows:
where ρ is the air density, V is the flight velocity, SeArea behind the pivot of the control surface, ceFor corresponding average geometric chord length, Che,δIs the hinge moment coefficient, delta is the deflection angle of the control surface,
let the mass of the wing be mflapThe moment generated by the inertial force of the control surface at the rotating shaft is characterized as follows:
Minertial＝mflapgLg，
through the hinge moment that the rudder face aerodynamic force that torsion bar (7) simulation steering wheel received produced, torsion bar (7) cross sectional shape is the rectangle, and the height of the rectangular cross section of torsion bar (7) is h, and is wide for b, and the polar inertia moment of this rectangular cross section is characterized as:
Ip＝βhb3
wherein β is a rectangular section coefficient, when h/b is 1, β is 0.141,
the torsion bar (7) is arranged in the working length LbeamThe torque produced is characterized as:
wherein the content of the first and second substances,
is the shear modulus of the material, E is the elastic model of the material, μ is the Poisson's ratio, L, of the materialbeamIs the length of the beam or beams,
is the torsion angle of the rectangular beam,
when in use
When in use, the torque generated by the torsion bar (7) in unit torsion angle is equal to the hinge moment generated by the control surface in unit deflection angle, thereby determining the proper size of the torsion bar (7) and realizing the simulation of the hinge moment of the control surface,
the control surface inertia force borne by the steering engine is simulated through the balance weight and the designed control surface simulation rocker arm (8), and the mass m of the balance weightweight＝mflapAnd L isg＝LweightWhen the test platform is used, the inertial force caused by the balance weight on the steering engine is equal to the inertial force generated by the control surface.
4. A universal small steering engine frequency sweep test device as claimed in claim 1, wherein:
the measurement and control computer is used for providing a complete steering engine loaded stepping sine frequency sweeping function, the frequency sweeping signal parameter setting comprises an initial frequency, a termination frequency, a frequency step, a frequency sweeping amplitude and a sampling rate, and the frequency sweeping period of each frequency step is not less than 10 sine periods.
5. A method for testing a universal small steering engine frequency sweep test device according to claim 1 or 2, comprising:
aerodynamic force borne by the control surface is simulated through the torsion bar (7), and inertial force of the control surface is simulated through the control surface simulation rocker arm (8); the moment of the aerodynamic force acting on the control surface on the rotating shaft of the control surface, namely the hinge moment of the control surface, is characterized as follows:
where ρ is the air density, V is the flight velocity, SeArea behind the pivot of the control surface, ceFor corresponding average geometric chord length, Che,δIs the hinge moment coefficient, delta is the deflection angle of the control surface,
let the mass of the wing be mflapThe moment generated by the inertial force of the control surface at the rotating shaft is characterized as follows:
Minertial＝mflapgLg，
for the simulation of aerodynamic force and inertial force, the torsion bar (7) is used for simulating the hinge moment generated by the aerodynamic force of a control surface on a steering engine, the section of the torsion bar (7) is rectangular, the height of the rectangular section of the torsion bar (7) is h, the width of the rectangular section of the torsion bar is b, and the polar inertial moment of the rectangular section is characterized as follows:
Ip＝βhb3
wherein β is a rectangular section coefficient, when h/b is 1, β is 0.141,
the torsion bar (7) is arranged in the working length LbeamThe torque produced is characterized as:
wherein the content of the first and second substances,is the shear modulus of the material, E is the elastic model of the material, μ is the Poisson's ratio, L, of the materialbeamIs the length of the beam or beams,is the torsion angle of the rectangular beam,
when in use
When the torsion bar (7) generates the torque with the unit torsion angle equal to the hinge generated by the unit deflection angle of the control surfaceThe chain moment, and thus the appropriate size of the torsion bar (7), is determined, a simulation of the control surface hinge moment is achieved,
the control surface inertia force borne by the steering engine is simulated through the balance weight and the designed control surface simulation rocker arm (8), and the mass m of the balance weightweight＝mflapAnd L isg＝LweightWhen the test platform is used, the inertial force caused by the balance weight on the steering engine is equal to the inertial force generated by the control surface.
6. The test method of claim 5, wherein:
the measurement and control computer is used for providing a complete steering engine loaded stepping sine frequency sweeping function, the frequency sweeping signal parameter setting comprises an initial frequency, a termination frequency, a frequency step, a frequency sweeping amplitude and a sampling rate, and the frequency sweeping period of each frequency step is not less than 10 sine periods.
7. The test method of claim 5, further comprising:
fixing a steering engine (13) to be tested on a steering engine test platform, connecting a measurement and control board card with the steering engine (13) to be tested through a cable, connecting the measurement and control board card with an angular displacement sensor (11), connecting the measurement and control board card with a measurement and control computer, connecting a direct current power supply with the steering engine test platform, turning on the measurement and control computer, the measurement and control board card and a direct current power supply switch,
and inputting the sweep frequency signal parameters into a measurement and control computer.
8. The test method of claim 7, wherein:
the sweep signal parameters include: the initial frequency is 0.2Hz, the final frequency is 8Hz, the frequency step length is 0.1Hz, the sweep frequency amplitude is 1 degree, the sampling rate is 50Hz,
in the test process, the steering engine is reset to zero and kept for 1 second between the time intervals when the frequency step length of the sweep frequency signal is increased,
and after the test of all the frequencies of the frequency sweeping signals is finished, the steering engine returns to the zero position, and data are stored to the corresponding storage path.
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| CN110127080A (en) * | 2019-04-22 | 2019-08-16 | 北京零壹空间技术研究院有限公司 | Steering engine load simulator |
| CN110188468B (en) * | 2019-05-30 | 2020-10-30 | 北京航空航天大学 | Aeroelastic cutting optimization method and system for curved fiber composite material airfoil structure |
| CN112083706B (en) * | 2020-07-28 | 2021-07-23 | 浪潮集团有限公司 | Device for distinguishing analog steering engine from digital steering engine and steering engine detection method |
| CN112965455B (en) * | 2020-12-29 | 2022-10-11 | 中国航空工业集团公司西安飞机设计研究所 | Device and method for testing dynamic characteristics of actuator |
| CN114394255B (en) * | 2021-12-28 | 2024-04-09 | 中国航天空气动力技术研究院 | Steering engine service life ground verification system and verification method |
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| US5954464A (en) * | 1997-09-05 | 1999-09-21 | United Technologies Corporation | Method for forming the edge of an airfoil |
| CN104122093A (en) * | 2013-04-27 | 2014-10-29 | 北京自动化控制设备研究所 | Electric actuator elastic torque loading device |
| CN106564617A (en) * | 2016-10-27 | 2017-04-19 | 北京实验工厂 | FLAP control plane loading device and function testing method |
| CN207231801U (en) * | 2017-09-28 | 2018-04-13 | 北京润科通用技术有限公司 | A kind of steering engine simulation loading mechanism |
| CN108152063A (en) * | 2017-12-12 | 2018-06-12 | 北京自动化控制设备研究所 | A kind of elastic linear load simulating device |
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