Aircraft hydraulic system optimization ground simulation working platform

Abstract

The invention belongs to the field of aircraft hydraulic systems, and particularly relates to an aircraft hydraulic system optimization ground simulation working platform. The aircraft body structure and hydraulic system simulation section is used for simulating a real aircraft hydraulic system state; the hydraulic pump is connected with the aircraft body structure and hydraulic system simulation section through a hydraulic pipeline, and the hydraulic pump is used for providing hydraulic pulsating pressure in different working states for the aircraft body structure and hydraulic system simulation section; the oil tank system is connected with the hydraulic pump through a hydraulic pipeline and used for providing hydraulic oil for the hydraulic pump. The driving system is connected with the hydraulic pump through a shaft; the control system is connected with the driving system through a cable and used for controlling the frequency of the hydraulic pump through the driving system. According to the method, a traditional aircraft hydraulic system fault removal method and process are broken through, fault reproduction and removal are achieved through a real structure and constraint conditions, and forward design of the aircraft hydraulic system can be assisted.

Description

Technical Field

[0001] The present application belongs to the field of aircraft hydraulic systems, and in particular relates to an aircraft hydraulic system optimization ground simulation work platform. Background Art

[0002] In the aircraft hydraulic system, due to the accumulation of errors in the manufacturing and assembly of hydraulic system pipelines, there is a large difference between the constraint state of the hydraulic system pipelines and the ideal model, which makes the vibration response of the real structure and the possible impact exceed the reasonable range of simulation analysis, which is easy to have an adverse impact on the safety of the aircraft hydraulic system, greatly increase the economic cost of on-board testing and troubleshooting of the aircraft, and cannot meet the current design requirements of forward design and rapid iteration.

[0003] Therefore, what method should be adopted to achieve the reasonable design and application of the aircraft hydraulic system structural layout and boundary constraints in complex environments, as well as the reproduction and testing of the actual structural stress state, has become an important issue in the design stage of the aircraft hydraulic system.

[0004] Therefore, it is desired to have a technical solution to overcome or at least alleviate at least one of the above-mentioned defects of the prior art. Summary of the invention

[0005] The purpose of the present application is to provide an aircraft hydraulic system optimization ground simulation work platform to solve at least one problem existing in the prior art.

[0006] The technical solution of this application is:

[0007] An aircraft hydraulic system optimization ground simulation work platform, comprising:

[0008] Aircraft body structure and hydraulic system simulation section, used to simulate the real aircraft hydraulic system status;

[0009] A hydraulic pump, wherein the hydraulic pump is connected to the aircraft body structure and the hydraulic system simulation section through a hydraulic pipeline, and the hydraulic pump is used to provide the aircraft body structure and the hydraulic system simulation section with hydraulic pulsating pressure under different working conditions;

[0010] An oil tank system, wherein the oil tank system is connected to the hydraulic pump through a hydraulic pipeline, and the oil tank system is used to provide hydraulic oil to the hydraulic pump;

[0011] A drive system, wherein the drive system is connected to the hydraulic pump via a shaft;

[0012] A control system, wherein the control system is connected to the drive system via a cable, and the control system is used to control the frequency of the hydraulic pump via the drive system.

[0013] In at least one embodiment of the present application, a hydraulic structure design and installation three-dimensional model reconstruction system is also included, and the hydraulic structure design and installation three-dimensional model reconstruction system is used to positively guide the design and installation of the aircraft body structure and hydraulic system simulation section.

[0014] In at least one embodiment of the present application, the aircraft body structure and hydraulic system simulation section are designed and installed using three-dimensional model reconstruction technology to simulate the error accumulation in each link of hydraulic pipeline manufacturing and assembly of a real aircraft hydraulic system, thereby simulating real boundary conditions and elastic supports.

[0015] In at least one embodiment of the present application, the oil tank system includes an oil storage tank and a pressure oil tank, the oil storage tank and the pressure oil tank are connected via a booster pump, and the pressure oil tank and the hydraulic pump are connected via a hydraulic pipeline.

[0016] In at least one embodiment of the present application, the driving system includes a variable frequency motor and an accelerator, and the accelerator is connected to the hydraulic pump via a shaft.

[0017] In at least one embodiment of the present application, the control system is controlled in a closed-loop manner.

[0018] The invention has at least the following beneficial technical effects:

[0019] The aircraft hydraulic system optimization ground simulation work platform of the present application breaks through the traditional aircraft hydraulic system troubleshooting methods and processes, establishes fault reproduction and troubleshooting through real structures and constraints, and can assist in the forward design of aircraft hydraulic systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of an aircraft hydraulic system optimization ground simulation work platform according to one embodiment of the present application. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the implementation of this application clearer, the technical scheme in the embodiment of this application will be described in more detail below in conjunction with the drawings in the embodiment of this application. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of this application, not all of them. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain this application, and should not be construed as limitations on this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The embodiments of this application are described in detail below in conjunction with the drawings.

[0022] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present application.

[0023] The following is combined with Figure 1 This application is described in further detail.

[0024] The present application provides an aircraft hydraulic system optimization ground simulation work platform, including: a hydraulic structure design and installation three-dimensional model reconstruction system, an aircraft body structure and hydraulic system simulation section, a hydraulic pump, a fuel tank system, a drive system and a control system.

[0025] Specifically, the aircraft body structure and hydraulic system simulation section is used to simulate the state of the real aircraft hydraulic system. The hydraulic structure design and installation three-dimensional model reconstruction system is used to positively guide the design and installation of the aircraft body structure and hydraulic system simulation section. The aircraft body structure and hydraulic system simulation section is designed and installed using three-dimensional model reconstruction technology to simulate the error accumulation in each link of the hydraulic pipeline manufacturing and assembly of the real aircraft hydraulic system, and then simulate the real boundary conditions and elastic support.

[0026] The hydraulic pump is connected to the aircraft body structure and the hydraulic system simulation section through hydraulic pipelines. The hydraulic pump is used to provide hydraulic pulsating pressure under different working conditions to the aircraft body structure and the hydraulic system simulation section; the oil tank system is connected to the hydraulic pump through hydraulic pipelines. The oil tank system is used to provide hydraulic oil to the hydraulic pump. In this embodiment, the oil tank system includes an oil storage tank and a pressure oil tank. The oil storage tank and the pressure oil tank are connected through a booster pump, and the pressure oil tank is connected to the hydraulic pump through a hydraulic pipeline. The drive system is connected to the hydraulic pump through a shaft. In this embodiment, the drive system includes a variable frequency motor and an accelerator. The accelerator is connected to the hydraulic pump through a shaft. The control system is connected to the drive system through a cable. The control system is used to control the frequency of the hydraulic pump through the drive system. The control mode of the control system is closed-loop control.

[0027] The aircraft hydraulic system optimization ground simulation work platform of the present application has an accelerator of the drive system connected to the hydraulic pump through a shaft, and the drive system provides power for the rotation of the hydraulic pump under the closed-loop control of the control system; the aircraft body structure and the hydraulic system simulation section are designed and installed under the positive guidance of the hydraulic structure design and installation three-dimensional model reconstruction system; hydraulic pulsating pressure is provided to the aircraft body structure and the hydraulic system simulation section through the hydraulic pump to simulate the real aircraft fluid system state.

[0028] The aircraft hydraulic system optimization ground simulation work platform of this application has the following working process:

[0029] (1) The hydraulic structure design and installation 3D model reconstruction system is used to positively guide the design and installation of the aircraft body structure and hydraulic system simulation section through the assembly structure 3D model reconstruction technology, simulating the actual aircraft hydraulic pipeline manufacturing, assembly error accumulation in each link, and then simulating the actual boundary conditions and elastic support of the aircraft;

[0030] (2) After the design and installation are completed, the booster pump in the fuel tank system starts working, and the hydraulic oil flows from the storage tank into the pressure tank. The hydraulic oil in the pressure tank has a certain pressure, which is used to simulate the actual pressure state of the aircraft fuel tank;

[0031] (3) The control system controls the hydraulic pump to work through the drive system. The control mode is closed-loop control. The frequency of the hydraulic pump is changed by adjusting the speed of the variable frequency motor, thereby introducing hydraulic oil media with different hydraulic pulsation pressures into the aircraft body structure and hydraulic system simulation section to simulate different working conditions of the aircraft hydraulic pump.

[0032] (4) Utilize the flow control components and motion control components integrated in the aircraft body structure and hydraulic system simulation section to control the flow and motion changes, and finally complete the ground simulation of the aircraft hydraulic system.

[0033] The aircraft hydraulic system optimization ground simulation work platform of the present application constructs an aircraft hydraulic system ground test platform through simple components such as aircraft body structure and hydraulic system simulation section, hydraulic pump, fuel tank system, drive system, control system, etc., with the assistance of a hydraulic structure design and installation three-dimensional model reconstruction system. It can truly simulate the working environment of the aircraft hydraulic system, realize the vibration response simulation of the aircraft structure and the onboard hydraulic system under the action of the hydraulic pump and the effective evaluation of the reliability application, solve the problem that hydraulic pipeline testing and troubleshooting must be carried out on board, shorten the system development cycle, and greatly reduce the cost of system troubleshooting.

[0034] The aircraft hydraulic system optimization ground simulation work platform of the present application is different from the previous hydraulic system ground simulation platform in that it proposes to simulate the elastic support of the hydraulic system based on the real structure of the aircraft to accurately simulate the on-board hydraulic system and the real structural constraints, realize the real reproduction of the vibration environment, determine the range of structure selection through simulation analysis, and cover the hydraulic system layout in the high vibration area on the aircraft with the optimal structural form.

[0035] The aircraft hydraulic system optimization ground simulation work platform of this application has been applied in the improvement design of a certain hydraulic pipeline, and has completed the effective verification and evaluation of the use status of the hydraulic system and the body structure, and obtained the reasonable theoretical basis for the durability assessment and optimization design of the hydraulic system, which provides strong support for the equipment life extension and improvement design. This application is not only suitable for ground simulation of military aircraft hydraulic system optimization, but also for other similar occasions, so it also has broad application prospects in the civilian field.

[0036] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. An aircraft hydraulic system optimization ground simulation work platform, characterized in that: include: Aircraft body structure and hydraulic system simulation section, used to simulate the real aircraft hydraulic system status; A hydraulic pump, wherein the hydraulic pump is connected to the aircraft body structure and the hydraulic system simulation section through a hydraulic pipeline, and the hydraulic pump is used to provide the aircraft body structure and the hydraulic system simulation section with hydraulic pulsating pressure under different working conditions; An oil tank system, wherein the oil tank system is connected to the hydraulic pump via a hydraulic pipeline, and the oil tank system is used to provide hydraulic oil to the hydraulic pump; A drive system, wherein the drive system is connected to the hydraulic pump via a shaft; A control system is connected to the drive system via a cable, and the control system is used to control the frequency of the hydraulic pump via the drive system.

2. The aircraft hydraulic system optimization ground simulation work platform according to claim 1, characterized in that: It also includes a hydraulic structure design and installation three-dimensional model reconstruction system, which is used to positively guide the design and installation of the aircraft body structure and the hydraulic system simulation section.

3. The aircraft hydraulic system optimization ground simulation work platform according to claim 2, characterized in that: The aircraft body structure and hydraulic system simulation section are designed and installed using three-dimensional model reconstruction technology to simulate the error accumulation in each link of hydraulic pipeline manufacturing and assembly of a real aircraft hydraulic system, and then simulate real boundary conditions and elastic supports.

4. The aircraft hydraulic system optimization ground simulation work platform according to claim 1, characterized in that: The oil tank system comprises an oil storage tank and a pressure oil tank. The oil storage tank is connected to the pressure oil tank via a booster pump, and the pressure oil tank is connected to the hydraulic pump via a hydraulic pipeline.

5. The aircraft hydraulic system optimization ground simulation work platform according to claim 1, characterized in that: The driving system includes a variable frequency motor and an accelerator, and the accelerator is connected to the hydraulic pump through a shaft.

6. The aircraft hydraulic system optimization ground simulation work platform according to claim 5, characterized in that: The control mode of the control system is closed-loop control.

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