Static load force measurement test device and method for rudder system

Abstract

The invention discloses a static load force measurement test device and method for a rudder system. The static load force measurement test device comprises a rudder piece simulation rod (3), a pull rope (4), the rudder system (5), a weight (6) and a power module (7). The power supply end of the rudder system (5) is connected with the power supply module (7); the output end of the rudder system (5) is connected with one end of the rudder sheet simulation rod (3), the other end of the rudder sheet simulation rod (3) is connected with one end of the pull rope (4), and the other end of the pull rope (4) is provided with the heavy object (6). The device disclosed by the invention is small, simple and convenient, has relatively low requirements on an experiment site, can be suitable for most environments, and is relatively low in manufacturing cost.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment control, and in particular to a static load force measurement test device and method for a rudder system. Background Art

[0002] Smart ammunition flying in the atmosphere will be subject to aerodynamic loads imposed by the incoming flow. Smart ammunition with air rudders as actuators has a large windward area of ​​rudder blades, and is subject to strong aerodynamic forces. The conductive force acting on the rudder system through mechanical connection is large, and its mechanical characteristics are related to the control accuracy and flight stability of smart ammunition. Therefore, in the early stages of development, designers often use multi-channel electro-hydraulic servo systems as loading equipment and use complex loading tooling to carry out static load force measurement tests on the rudder system to verify whether the designed rudder system meets the index requirements.

[0003] However, on the one hand, the multi-channel electro-hydraulic servo system imposes stringent management requirements on the rudder system statics test site and test personnel; on the other hand, using the multi-channel electro-hydraulic servo system as a loading device imposes cost requirements on the development cost.

[0004] Therefore, it is necessary to provide a low-cost, simple and efficient rudder system statics test device to solve the problems in the prior art. Summary of the invention

[0005] In view of the technical problems in the prior art that the static load force measurement test process of a rudder system is complicated and the cost is high, the present invention proposes a static load force measurement test device and method for a rudder system.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A static load force measurement test device for a rudder system, comprising a rudder blade simulation rod 3, a pull rope 4, a rudder system 5, a weight 6, and a power module 7;

[0008] The power supply end of the rudder system 5 is connected to the power module 7; the output end of the rudder system 5 is connected to one end of the rudder blade simulation rod 3, the other end of the rudder blade simulation rod 3 is connected to one end of the pull rope 4, and the other end of the pull rope 4 is provided with a weight 6.

[0009] Preferably, the rudder system 5 includes a servo 51 and a servo controller 52; the control end of the servo 51 is connected to the control output end of the servo controller 52, the power input end of the servo controller 52 is connected to the first output end of the power module 7 through a cable, and the power input end of the servo 51 is connected to the second output end of the power module 7.

[0010] Preferably, the rudder blade simulation rod 3 includes a first tiller handle 31 , a rudder bar 32 and a second tiller handle 32 , and the first tiller handle 31 and the second tiller handle 32 are respectively arranged at two ends of the rudder bar 32 .

[0011] Preferably, through holes are distributed in the first tiller handle 31 and the second tiller handle 32 .

[0012] Preferably, it further comprises a steering gear compartment housing 2 ; the rudder system 5 is fixed on the inner surface of the steering gear compartment housing 2 .

[0013] Preferably, a support seat 1 is also included for fixing the steering gear compartment housing 2.

[0014] Preferably, the support seat 1 includes a base 11, a supporting part 12 and a fixing part 13; the bottom of the supporting part 12 is installed in the middle of the base 11, and the top of the supporting part 12 is provided with a fixing part 13, and the fixing part 13 is fixedly connected to the steering gear compartment housing 2.

[0015] The present invention also provides a static load force measurement test method for a rudder system, comprising the following steps:

[0016] S1: Set the permissible voltage V1 and permissible current i1 of the rudder system 5 through the power module 7. After the setting is completed, power on the rudder system 5, and then determine whether the servo 51 is adjusted to zero position. If not, adjust it to zero. If yes, enter S2;

[0017] S2: Load a weight of m2, and then load the weight step by step to 30% of the design load with a step length of 5% of m2 to perform a preliminary test to determine whether the test device works normally. If so, enter S3. If not, adjust the test device, and then repeat S1-S2 until the test device is normal;

[0018] S3: Load a weight with a mass of m2, and then load it step by step with a step size of 5% of m2 to 100% of the design load and maintain it for more than 3s. Observe whether the working voltage V2 and the working current i2 of the rudder system exceed the allowable voltage V1 and the allowable current i1, and observe whether there is any abnormality in the test piece. If there is no abnormality, continue to load step by step with the original step size until the rudder system 5 fails, record the mass of the loaded weight 6, and then obtain the maximum torque that the rudder system 5 can withstand.

[0019] Preferably, in S2, m2 is calculated as follows:

[0020] M=0.5*m1*L1+m2*L1(1)

[0021] In formula (1), M represents the bending moment of the rudder system 5; m1 represents the mass of the rudder blade simulation rod 3; L1 represents the distance between the through holes in the first rudder handle 31 and the second rudder handle 32; and m2 represents the mass of the weight 6.

[0022] Preferably, in S3, the maximum moment that the rudder system 5 can withstand is:

[0023] M1=0.5*m1*L1+m3*L1(2)

[0024] In formula (2), M1 represents the maximum moment of the rudder system 5; m1 represents the mass of the rudder blade simulation rod 3; L1 represents the spacing between the through holes in the first rudder handle 31 and the second rudder handle 32; and m3 represents the mass of the weight 6 when the rudder system fails.

[0025] In summary, due to the adoption of the above technical solution, compared with the prior art, the present invention has at least the following beneficial effects:

[0026] The device of the present invention is small and simple, has relatively small requirements on the experimental site, can be applied to most environments, and has low manufacturing cost;

[0027] At the same time, the test process is simple and efficient, and the maximum torque of the rudder system can be quickly calculated, which improves the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The figure is a schematic diagram of a static load force measurement test device for a rudder system according to an exemplary embodiment of the present invention.

[0029] Figure 2 Schematic diagram of the structure of the rudder blade simulation rod 3 according to an exemplary embodiment of the present invention.

[0030] Figure 3 The figure is a schematic diagram of a static load force measurement test method for a rudder system according to an exemplary embodiment of the present invention. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the examples and specific implementation methods. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following examples, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0032] In the description of the present invention, it is necessary to understand that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] like Figure 1As shown, the present invention provides a static load force measurement test device for a rudder system, comprising a support seat 1, a steering gear cabin housing 2, a rudder blade simulation rod 3, a pull rope 4, a rudder system 5, a weight 6, and a power module 7.

[0034] The steering gear cabin housing 2 is fixed on the top of the support base 1; the rudder system 5 is fixed on the inner surface of the steering gear cabin housing 2 (can be fixed by screws, etc.); the power supply end of the rudder system 5 is connected to the power supply module 7 through a cable; the output end (output shaft) of the rudder system 5 is connected to one end of the rudder blade simulation rod 3, the other end of the rudder blade simulation rod 3 is connected to one end of the pull rope 4 (for example, a nylon rope), and the other end of the pull rope 4 is provided with a weight 6 (as a static load on the rudder system 5).

[0035] In this embodiment, the support seat 1 serves to fix the steering gear cabin housing 2, and includes a base 11, a supporting portion 12 and a fixing portion 13; the base 11 is square and serves as a support; the supporting portion 12 is in the shape of an inclined panel rib, the bottom of the supporting portion 12 is installed in the middle of the base 11, and the top of the supporting portion 12 is installed with a fixing portion 13, which is cylindrical and is used to install (circumferentially evenly distributed pins can be used) the steering gear cabin housing 2.

[0036] In this embodiment, the steering system 5 includes a steering gear 51 and a steering gear controller 52. The steering gear 51 is fixed to the inner surface of the steering gear compartment housing 2 by screws, and the control end of the steering gear 51 is connected to the control output end of the steering gear controller 52 by a cable, and the power input end of the steering gear controller 52 is connected to the first output end of the power module 7 by a cable; and the power input end of the steering gear 51 is connected to the second output end of the power module 7 by a cable ( Figure 1 The first output end of the power module 7 provides control power to the steering gear controller 52, and the second output end of the power module 7 provides power power to the steering gear 51, and the two power supplies are isolated from each other.

[0037] In this embodiment, Figure 2 As shown, the rudder blade simulation rod 3 includes a first tiller 31, a rudder bar 32 and a second tiller 32, and through holes are provided in the first tiller 31 and the second tiller 32. The first tiller 31 and the second tiller 32 are respectively arranged at the two ends of the rudder bar 32. That is, the rudder blade simulation rod 3 is centrally symmetrical, and the first tiller 31 and the second tiller 32 are provided at both ends. The same material as the real model and the ratio of 1:1 are provided, which not only increases the interchangeability of the rudder blade simulation rod 3, but also after the first tiller 31 is connected to the steering engine 51 (for example, a hinge), the through hole of the second tiller 32 can be used as a supporting point of the nylon rope 4 to withstand the force applied by the weight 6.

[0038] In this embodiment, the weight 6 acts as a static load on the rudder system 5 , and its mass should be calculated based on the rudder system bending moment requirement M, the mass m1 of the rudder blade simulation rod 3 , and the spacing L1 between the through holes in the first tiller handle 31 and the second tiller handle 32 .

[0039] M=0.5*m1*L1+m2*L1(1)

[0040] In formula (1), M represents the bending moment of the rudder system 5, which is obtained by design according to the requirements of the task book; m1 represents the mass of the rudder blade simulation rod 3; L1 represents the distance between the through holes in the first rudder handle 31 and the second rudder handle 32; and m2 represents the mass of the weight 6.

[0041] After the mass of the weight 6 is calculated, a weight with a mass of m2 is selected as the loading load of the rudder system 5; in order to better verify the function of the rudder system 5, other weights should also be selected, and weights with a mass gradient of 5% based on m2 can be selected.

[0042] Based on the above-mentioned static load force measurement test device for a rudder system, the present invention also provides a static load force measurement test method for a rudder system, such as Figure 3 As shown, the specific steps include:

[0043] S1: Setting the permissible voltage V1 and permissible current i1 of the rudder system 5 through the power module 7, and powering on the rudder system 5 after the setting is completed; then judging whether the servo 51 is adjusted to zero position under the control of the servo controller 52, if not, adjusting to zero, and if yes, taking photos and recording the test piece (working current and voltage of the servo 51 and the power module 7);

[0044] S2: Load a weight of m2, and then load the weight step by step with 5% of m2 to 30% of the design load for preliminary test, and check whether the installation, loading, measurement system and test data are normal (if the rudder system always works within the range of the allowable voltage V1 and the allowable voltage i1 during the test, it is judged to be normal). After the preliminary test is completed, unload step by step according to the original step length, and conduct a formal test after the test device works normally; if the test device is abnormal, adjust the test device (for example, adjust the installation interface, loading mode), and then repeat S1-S2 until the test device is normal.

[0045] c) Load a weight of mass m2, then load step by step with 5% of m2 to 100% of the design load and keep it for more than 3s, observe whether the working voltage V2 and working current i2 of the rudder system are within the allowable range (i.e. V2≤V1, i2≤i1), record the data and take photos, and observe whether the test piece has any abnormality (abnormalities include abnormal sound of the servo or cracks in the appearance); if abnormal, stop the experiment; if no abnormality occurs, continue to load step by step with the original step length until the rudder system fails, record the mass of the loaded weight 6 as m3, and then obtain the maximum torque that the rudder system 5 can withstand:

[0046] M1=0.5*m1*L1+m3*L1(2)

[0047] In formula (2), M1 represents the maximum moment of the rudder system 5; m1 represents the mass of the rudder blade simulation rod 3; L1 represents the spacing between the through holes in the first rudder handle 31 and the second rudder handle 32; and m3 represents the mass of the weight 6 when the rudder system fails.

[0048] In this embodiment, after following the above test steps, it is determined whether the rudder system meets the technical index requirements. If the test results are inconsistent with the target, the rudder system design parameters (motor parameters, reduction mechanism design parameters) can be further optimized. This process is repeated and multiple rounds of verification are performed through the test device until the requirements are met.

[0049] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A static load test device for a rudder system, characterized in that: It includes a rudder simulation rod (3), a pull rope (4), a rudder system (5), a weight (6), and a power module (7); The power supply end of the rudder system (5) is connected to a power module (7); the output end of the rudder system (5) is connected to one end of a rudder blade simulation rod (3); the other end of the rudder blade simulation rod (3) is connected to one end of a pull rope (4); and a weight (6) is provided at the other end of the pull rope (4).

2. A static load test device for a rudder system as claimed in claim 1, characterized in that: The rudder system (5) comprises a servo (51) and a servo controller (52); the control end of the servo (51) is connected to the control output end of the servo controller (52), the power input end of the servo controller (52) is connected to the first output end of the power module (7) via a cable, and the power input end of the servo (51) is connected to the second output end of the power module (7).

3. A static load force test device for a rudder system as claimed in claim 1, characterized in that: The rudder blade simulation rod (3) comprises a first tiller (31), a rudder bar (32) and a second tiller (32), wherein the first tiller (31) and the second tiller (32) are respectively arranged at two ends of the rudder bar (32).

4. A static load force test device for a rudder system as claimed in claim 3, characterized in that: Through holes are distributed in the first tiller handle (31) and the second tiller handle (32).

5. A static load test device for a rudder system as claimed in claim 1, characterized in that: It also comprises a steering gear cabin housing (2); the rudder system (5) is fixed on the inner surface of the steering gear cabin housing (2).

6. A static load test device for a rudder system as claimed in claim 1, characterized in that: It also includes a support seat (1) for fixing the steering gear compartment housing (2).

7. A static load test device for a rudder system as claimed in claim 6, characterized in that: The support seat (1) comprises a base (11), a supporting part (12) and a fixing part (13); the bottom of the supporting part (12) is installed in the middle of the base (11), the top of the supporting part (12) is provided with a fixing part (13), and the fixing part (13) is fixedly connected to the steering gear compartment housing (2).

8. A static load force test method for a rudder system based on the device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: Setting the permissible voltage V1 and permissible current i1 of the rudder system (5) through the power module (7), powering on the rudder system (5) after the setting is completed, and then judging whether the servo (51) is adjusted to zero position, if not, adjusting to zero, if yes, entering S2; S2: Load a weight of m2, and then load the weight step by step to 30% of the design load with a step length of 5% of m2 to perform a preliminary test to determine whether the test device works normally. If so, enter S3. If not, adjust the test device, and then repeat S1-S2 until the test device is normal; S3: Load a weight with a mass of m2, then load step by step with a step length of 5% of m2 until it reaches 100% of the design load and maintain for more than 3 seconds, observe whether the working voltage V2 and the working current i2 of the rudder system exceed the allowable voltage V1 and the allowable current i1, and observe whether there is any abnormality in the test piece. If there is no abnormality, continue to load step by step with the original step length until the rudder system (5) fails, record the mass of the loaded weight (6), and then obtain the maximum torque that the rudder system (5) can withstand.

9. A static load force test method for a rudder system as claimed in claim 8, characterized in that: In S2, the calculation method of m2 is: M=0.5*m1*L1+m2*L1 (1) In formula (1), M represents the bending moment of the rudder system (5); m1 represents the mass of the rudder blade simulation rod (3); L1 represents the distance between the through holes in the first rudder handle (31) and the second rudder handle (32); and m2 represents the mass of the weight (6).

10. A static load force test method for a rudder system as claimed in claim 8, characterized in that: In S3, the maximum moment that the rudder system (5) can withstand is: M1=0.5*m1*L1+m3*L1 (2) In formula (2), M1 represents the maximum moment of the rudder system (5); m1 represents the mass of the rudder blade simulation rod (3); L1 represents the distance between the through holes in the first rudder handle (31) and the second rudder handle (32); and m3 represents the mass of the weight (6) when the rudder system fails.

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