Aircraft hydraulic pump test control method and control system

Abstract

The application relates to the technical field of intelligent control methods, and discloses an aviation hydraulic pump test control method and a control system, which comprise a central processing unit, and further comprise a test control module and a test configuration module which are connected with the central processing unit and communicate with each other; the test configuration module is used for configuring test parameters for an aviation hydraulic oil test bench and generating a preset test configuration; the test control module comprises an automatic control submodule; the automatic control submodule is used for calling the preset test configuration and controlling the aviation hydraulic oil test bench operation and the aviation hydraulic oil test system operation according to the automatic control strategy, and the test parameters cyclically fluctuate when the aviation hydraulic oil test bench operation and the aviation hydraulic oil test system operation; the aviation test environment constructed by the application is real and meets the standards, the test reality is high, the test result reliability is high, the test configuration is convenient to adjust, and diversified test environments can be constructed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent control method, and particularly relates to an aviation hydraulic pump test control method and a control system. BACKGROUND

[0002] Aviation hydraulic oil as a special oil directly related to aviation safety, its quality must be verified by strict test to ensure its airworthiness, which can be used in civil aviation aircraft and other aviation equipment. Due to the particularity of aviation hydraulic oil structure and operating environment, the aviation hydraulic oil airworthiness verification standard is also relatively high. Correspondingly, the aviation hydraulic oil verification test needs to be carried out strictly according to the standard requirements, and the test environment needs to be ensured under the standard condition. Whether the test bench corresponding to the test is running normally is one of the important factors to ensure that the test meets the standard.

[0003] Because the test bench needs to ensure that the aviation hydraulic oil operates for 500h under the standard test parameters such as standard temperature, standard flow, standard hydraulic pump speed, it needs to control more corresponding projects, and also needs to control the flow meter, thermometer and other real-time monitoring test benches to ensure the reliable operation of the test bench. The overall control and monitoring projects are numerous, and the operation time is long. Simply relying on manual operation control, the control accuracy is poor, and the labor cost consumed is high. The existing automatic control system cannot match the aviation hydraulic oil test bench with special operating conditions, the control projects cannot be matched, the control effect is poor, and the test bench components cannot be accurately controlled, so that the aviation test environment meeting the standard cannot be constructed, and the reliability is poor.

[0004] Therefore, at present, there is an urgent need for a test control system with high adaptability to the test bench and capable of achieving high reliability and high standard test control effect. SUMMARY

[0005] The present application aims to provide an aviation hydraulic pump test control method and a control system, which can construct a real and standard aviation test environment, has high test authenticity and high test result reliability, and the test configuration is easy to adjust, and can construct diversified test environment.

[0006] To achieve the above purpose, the present application provides the following scheme:

[0007] Scheme one:

[0008] The application discloses an aviation hydraulic pump test control method and a control system thereof.

[0009] The working principle and advantages of the application are as follows: firstly, the automatic control sub-module controls the aviation hydraulic oil test bench to operate according to the preset test configuration, since the aviation hydraulic oil test needs to be strictly performed according to certain test standards, the application can accurately control the test bench to operate according to the test requirements, so that the operation environment of the test bench reaches the test index, and the test result is ensured to be effective and reliable; secondly, the automatic control sub-module controls the system to operate according to the automatic control strategy, so that the test parameters are in a cyclic fluctuation state during the operation of the system, that is, the test parameter values in different cycles fluctuate up and down with a certain operation time as a single cycle, so that the test environment constructed by the control is relatively dynamic, is consistent with the actual operation environment of the aviation hydraulic oil in the airplane, has high test authenticity and high test result reliability.

[0010] Compared with a conventional control scheme, in the conventional control scheme, the test parameters and other values are stable, unfluctuating fixed values, and are target values that must be kept constant during the control process, so as to ensure that the test control meets the standards and the stability of the system operation control is ensured. In the application, the test parameters are cyclically fluctuated, the test parameters are still constant values during parameter setting, the test control meets the standards, and the test parameters fluctuate up and down based on the constant values according to the automatic control strategy during the system operation, so that the test operation environment constructed by the control is closer to the real aviation operation environment. Since the aviation hydraulic oil operates in the real airplane hydraulic system, is affected by the vibration, jolt and other factors generated by the airplane during flight, and the values of the operation environment do not remain unchanged for a long time, but cyclically fluctuate in different periods, the test parameters are controlled to be cyclically fluctuated in the application, so that the test environment constructed by the control is consistent with the real operation environment of the airplane for a long time, and the test authenticity is high, and the test result reliability is high.

[0011] Further, the test parameters include a hydraulic pump rotating speed target value, a throttle valve opening and closing ratio target value, a heating temperature target value, a cooling temperature target value, a PV2 pressure target value and a DC1 enable target value; and a control starting time, a control adjusting time and a control maintaining time corresponding to each target value.

[0012] Beneficial effects: The test parameter items are fully set, and the overall aviation hydraulic oil test bench state can be completely controlled. Moreover, the control time of each test parameter is defined in the scheme, wherein the control starting time specifies the operation starting time of the corresponding test bench structure of each parameter, the control adjusting time specifies the required time for the parameter value of each parameter to gradually increase to the target value, and the control maintaining time specifies the maintaining time required after each parameter reaches the target value; in the scheme, the numerical growth process of the test parameters is controlled in detail, and the reliability of the parameter setting can be ensured.

[0013] Further, the automatic control strategy is to adjust the test parameters according to preset time nodes, so that the test parameters are increased and decreased in a fluctuating manner according to preset proportion values.

[0014] Beneficial effects: The preset time nodes and preset proportion values are used to control and limit the numerical values of the test parameters in the cyclic fluctuation method, so that the fluctuation range of the test parameters is within the preset controllable range. In this way, even if the numerical values of the test parameters fluctuate, the test environment constructed is still in line with the standard requirements, and the real test environment is restored while the effectiveness of the test is ensured.

[0015] Further, when controlling the aviation hydraulic oil test bench operation, each test parameter increases according to a preset growth rate.

[0016] Beneficial effects: Each test parameter does not directly change to the target value, but increases at a constant speed. In this way, the test bench operation is more stable.

[0017] Further, the test configuration module includes a channel setting submodule, a flow setting submodule and a setting correction submodule; the channel setting submodule is used to select and match the test configuration items participating in configuration; the flow setting submodule is used to input test parameters and form a preset test configuration; and the setting correction submodule is used to newly create, correct or delete the preset test configuration.

[0018] Beneficial effects: The control system can establish or modify the corresponding test configuration according to different test standards or test control requirements. The operability of the test configuration is strong, the customization of the test configuration can be realized, and a diversified test operation environment can be constructed.

[0019] Further, the test control module further comprises a data display submodule; the data display submodule is used to show the operation parameters of the aviation hydraulic oil test system collected in real time.

[0020] Beneficial effects: Real-time data collection and data display are carried out for the test process, which facilitates overall control of the test process.

[0021] Further, the operation parameters include aviation hydraulic oil flow, aviation hydraulic oil temperature and aviation hydraulic oil pressure at key nodes of the aviation hydraulic oil test bench.

[0022] Beneficial effects: The main monitoring object during operation is aviation hydraulic oil, and the operation of the test bench can be accurately verified through the state change of the aviation hydraulic oil, and such operation parameters are easy to collect and monitor.

[0023] Further, when showing the operation parameters of the aviation hydraulic oil test system collected in real time, the data display submodule adopts waveform display and the sampling rate of the waveform diagram is adjustable.

[0024] Beneficial effects: The waveform diagram can make the change of the operation parameters intuitive and easy to observe. Moreover, the sampling rate of the waveform diagram is adjustable, that is, the number of sampling points per unit time is adjustable, different sampling rates can be set according to different monitoring accuracy requirements, and the flexibility of the control system is high.

[0025] Further, the test control module further comprises a manual control submodule; the manual control submodule is used to provide a manual real-time operation function.

[0026] Beneficial effects: The control system can also control the test bench in real time through the manual control submodule, the control mode is more diverse, the system operation adaptability is stronger, and the application range is wider.

[0027] Scheme two:

[0028] The aviation hydraulic pump test control method applies the aviation hydraulic pump test control system as described in scheme one, and comprises the following steps:

[0029] Step 1: input test parameters to obtain a preset test configuration;

[0030] Step 2: call the preset test configuration;

[0031] Step 3: control the aviation hydraulic oil test bench to operate according to the automatic control strategy, and control the test parameters to increase or decrease in a fluctuating manner according to the preset proportion value and preset time node.

[0032] The advantages and benefits of this solution are as follows: When controlling the operation of the aviation hydraulic oil test bench, the test parameters are dynamically changed. Correspondingly, the constructed test environment is also dynamic, matching the actual operating environment of aviation hydraulic oil in an aircraft. This solution can control and construct a realistic aviation test environment, resulting in high test realism and high reliability of test results. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the system structure of Embodiment 1 of the aviation hydraulic pump test control method and control system of the present invention;

[0034] Figure 2 This is a schematic diagram of the operation process of the aviation hydraulic oil test bench structure in the system of Embodiment 1 of the aviation hydraulic pump test control method and control system of the present invention. Detailed Implementation

[0035] The following detailed explanation illustrates the specific implementation methods:

[0036] Example 1:

[0037] The basic implementation examples are as follows: Figure 1 The diagram shows an aviation hydraulic pump test control system, including a central processing unit (CPU), a test control module, and a test configuration module connected to and communicating with the CPU. The test configuration module is used to configure test parameters for the aviation hydraulic oil test bench and generate preset test configurations. The test configuration module includes a channel setting submodule, a process setting submodule, and a setting correction submodule.

[0038] The channel setting submodule is used to select test configuration items for configuration. For example, it allows enabling hydraulic pump test parameter configuration, enabling oil tank level configuration, and disabling hydraulic pump inlet pressure configuration. This module enables relatively precise control of various structures within the test bench. Furthermore, when selecting test configuration items, upper and lower limits can be set for each item. For example, the upper limit for oil tank level is 80L, and the lower limit is 40L; the upper limit for hydraulic pump speed is 3750rpm, and the lower limit is 2250rpm; the upper limit for temperature control is 127℃, and the lower limit is 115℃. Accurate setting of these upper and lower limits prevents damage to the test bench due to unreasonable parameter settings during control.

[0039] The settings correction submodule is used to create, correct, or delete preset test configurations. For tests that only modify some test parameters, the settings correction submodule can be used to quickly fine-tune the parameters based on the previous preset test configuration, which helps to improve the user experience. For obsolete preset test configurations, they can be deleted to avoid occupying system space.

[0040] The flow setting sub-module is configured to input test parameters and form a preset test configuration. The test parameters include a hydraulic pump rotating speed target value, a throttle valve opening and closing ratio target value, a heating temperature target value, a cooling temperature target value, a PV2 pressure target value and a DC1 enable target value, and a control starting time, a control adjusting time and a control maintaining time corresponding to each target value. Specifically, the PV2 pressure target value refers to a hydraulic pump output pressure target value, and the DC1 enable target value refers to a supercharged oil tank attached pressure target value. The control starting time specifies the operation starting time of the corresponding test bench structure of each parameter, the control adjusting time specifies the required time for the parameter value of the corresponding test bench structure of each parameter to gradually increase to the target value, and the control maintaining time specifies the maintaining time required after each parameter reaches the target value.

[0041] The test control module includes an automatic control sub-module and a data display sub-module. The automatic control sub-module is configured to call the preset test configuration and control the operation of the aviation hydraulic oil test bench and the aviation hydraulic oil test system according to the automatic control strategy based on the preset test configuration, and the test parameters cyclically fluctuate when the aviation hydraulic oil test system is operated.

[0042] The automatic control strategy is to adjust the test parameters according to a preset time node, so that the test parameters are increased and decreased in a fluctuating manner according to a preset proportion value. Specifically, the preset time node can be a fixed time after the test operation starts, that is, one cycle. The fixed time is determined based on the actual aviation hydraulic oil operation environment, and in this embodiment, it can be selected as 3h, 5h, 10h, etc. The test parameters within the preset time node include a combination configuration of various indicators such as rated rotating speed (60% rated rotating speed-100% rated rotating speed), flow (zero flow-full flow), temperature (upper limit value of temperature), etc. The fluctuating increase and decrease according to the preset proportion value specifically refers to that the set test parameter is taken as a reference value, and the test parameter value in different cycles is selected from the reference value, the reference value plus a fluctuation value, or the reference value minus a fluctuation value. For example, in this embodiment, the rotating speed reference value is set as 80% rated rotating speed value-3000rpm, and the preset fluctuation value is 20% rated rotating speed value-750rpm, so the fluctuation of the actual rotating speed value is controlled within 2250-3750rpm; or the temperature reference value is set as 121℃, and the preset fluctuation proportion value is 5%, that is, the fluctuation value of the test parameter value is calculated according to 5% of the temperature reference value, so the actual temperature value is controlled within 121℃±6℃. This scheme restores the actual aviation hydraulic oil operation environment through numerical fluctuation, while ensuring the effectiveness of the test parameter setting, and further ensuring the reliability of the test operation.

[0043] And, the automatic control sub-module controls the operation of the aviation hydraulic oil test bench, and each test parameter increases at a preset increasing rate. The preset increasing rate is determined by the control start time, the control adjustment time and the control maintenance time corresponding to each target value in the test parameter. The preset increasing rate of the test parameter with the adjustment time of 10S is greater than the preset increasing rate of the test parameter with the adjustment time of 20S. In this way, the operation efficiency of the corresponding bench structure can be controlled in detail, and the test control accuracy and the bench operation stability can be improved.

[0044] The data display sub-module is used to display the operation parameters of the aviation hydraulic oil test system collected in real time. The operation parameters include the aviation hydraulic oil flow, the aviation hydraulic oil temperature and the aviation hydraulic oil pressure at the key nodes of the aviation hydraulic oil test bench. When the data display sub-module displays the operation parameters of the aviation hydraulic oil test system collected in real time, a waveform diagram is used for display, and the sampling rate of the waveform diagram is adjustable. In this embodiment, the sampling rate is set to 20Hz, that is, 20 data points corresponding to each operation parameter are saved in one minute, and the waveform diagram is drawn based on the collected data points. In this way, the sampling accuracy is high, and sufficient data reference can be provided for the analysis of the bench operation.

[0045] Specifically, the aviation hydraulic oil test bench involved in this scheme is shown in FIG. 1. Figure 2 The fluid performance of the aviation hydraulic oil is tested, including the oil tank system, the oil supply system, the flow control system, the test loop and the cooling system connected in sequence in the same main loop, and the cooling system is also connected with the oil tank system. The aviation hydraulic oil is stored in the oil tank system, pumped by the hydraulic pump in the oil supply system, and then starts to run in the whole bench, specifically in the order of oil tank system-oil supply system-flow control system-test loop-cooling system-oil tank system. The throttle valve is arranged in the flow control system to control the size of the running hydraulic oil flow in the bench by controlling the opening and closing ratio of the throttle valve. The heating machine is arranged in the test loop to heat the hydraulic oil to reach the standard test condition. The cooling machine is arranged in the cooling system to cool the hydraulic oil before being delivered back to the oil tank system, so as to participate in the next cycle and ensure the test effectiveness. Furthermore, the flow sensor, the temperature sensor and the pressure sensor are arranged before and after the inlet and outlet of the oil tank system, before and after the inlet and outlet of the hydraulic pump in the oil supply system, before and after the inlet and outlet of the throttle valve in the flow control system, before and after the inlet and outlet of the heating machine in the test loop, and before and after the inlet and outlet of the cooling machine in the cooling system. The above-mentioned sensor arrangement positions are the key nodes of the aviation hydraulic oil test bench, and each sensor corresponds to the real-time collected operation parameters.

[0046] The embodiment also provides an aviation hydraulic pump test control method, which applies the aviation hydraulic pump test control system and comprises the following steps:

[0047] Step 1: input test parameters to obtain a preset test configuration. Specifically, input test parameters through a test configuration module to form a preset test configuration.

[0048] Step 2: call the test configuration. Specifically, call the test configuration by an automatic control submodule, and in the test configuration application, each test parameter increases at a preset increasing rate.

[0049] Step 3: control the aviation hydraulic oil test bench operation according to the automatic control strategy by the automatic control submodule, and control the test parameters to increase and decrease in a fluctuating manner according to a preset proportion value and a preset time node.

[0050] The aviation hydraulic pump test control method and control system provided by the embodiment can control the construction of a real aviation test environment, and have high test authenticity and high test result reliability. The test parameter is dynamically controlled in the embodiment, and the test parameter is cyclically fluctuated according to a preset time node and a preset proportion value, so that the test bench test environment controlled by the test control system is also dynamically changed instead of being fixed. The dynamic test bench test environment can match the working environment of the aviation hydraulic oil in the actual operation of the aircraft. Because the aircraft is affected by the environment (for example, the aircraft will produce a certain oscillation when passing through different density atmospheric layers) and the operation of each structure in the aircraft (for example, the vibration generated by the operation of the engine, the rise of the environmental temperature caused by the heating of some components in long-term operation, etc.) during the actual operation, the values of the operation environment of the aviation hydraulic oil in the aircraft will not remain unchanged for a long time, but will cyclically fluctuate in different periods, that is, the actual working environment of the aviation hydraulic oil is dynamically changed.

[0051] The parameter control is dynamic in the embodiment, so that the test bench system can simulate a test environment with high authenticity, and the parameter fluctuation is controlled within a controllable range through reasonable fluctuation proportion control, thereby ensuring high authenticity and high reliability of the test.

[0052] In addition, the test configuration in the embodiment can be quickly modified and adjusted through the test configuration module, and different test parameters can be conveniently combined and set according to different test needs, thereby constructing diversified test environments and completing different tests. The operation flexibility of the overall control system is high. Moreover, the embodiment can simulate the actual operation condition of the hydraulic system of an existing civil aviation transport aircraft, has high universality and high authenticity, and the matching degree of the simulated operation condition and the actual operation condition of the hydraulic system of the existing civil aviation transport aircraft is as high as 90% or more.

[0053] Embodiment Two

[0054] The aviation hydraulic pump test control system, on the basis of embodiment one, is additionally provided with a manual control sub-module; the manual control sub-module is arranged in the test control module. The manual control sub-module is used for providing a manual real-time operation function. When the manual control sub-module operates, the structure setting diagram of the aviation hydraulic oil test bench corresponding to the control of the test control system is displayed in a visual manner, wherein the structure part existing hydraulic oil in the aviation hydraulic oil test bench is distinguished by different colors, for example, the structure part existing hydraulic oil, i.e. the structure part reached by the hydraulic oil in the test bench during operation, is displayed in blue, and the remaining structure part is displayed in gray, and the color changes in real time with the flow of the hydraulic oil. In this way, the movement of the hydraulic oil can be intuitively mastered, and the operation of each part of the test bench can be more conveniently controlled as a whole.

[0055] A plurality of adjustment options are arranged in the manual control sub-module, including: a hydraulic pump adjustment item (including the start, stop and rotation speed setting of the hydraulic pump), an extractor adjustment item (including the start and stop of the extractor), a lighting lamp adjustment item (including the start and stop of the lighting lamp), a heating machine adjustment item (including the start, stop and temperature setting of the heating machine), a cold water machine adjustment item (including the start, stop and temperature setting of the cold water machine), a DC1 adjustment item (including the start and stop of DC1), etc. In this way, the test parameters required for the test are fully contained, ensuring the sufficiency and effectiveness of manual control. And the above adjustment options are also displayed in a visual manner around the structure setting diagram of the aviation hydraulic oil test bench, so as to conveniently control the test content correspondingly.

[0056] The embodiment also provides an aviation hydraulic pump test control method, which applies the aviation hydraulic pump test control system as described above, and in the embodiment, the manual control sub-module is selected for test control, including the following steps:

[0057] Step 1: input test configuration through the manual control sub-module;

[0058] Step 2: the aviation hydraulic oil test bench starts to operate; during the operation of the test bench, the test configuration is adjusted through the manual control sub-module at the required time point according to the test standard requirement.

[0059] The aviation hydraulic pump test control method and control system provided by the embodiment can be controlled in a manual control mode, and compared with the automatic control method in embodiment one, the controllability of the manual control mode is stronger, and the control maneuverability is better.

[0060] Embodiment Three

[0061] The aviation hydraulic pump test control system, on the basis of embodiment one, is additionally provided with a meter calibration module, a permission management module and a log query module.

[0062] The meter calibration module is used for calibrating the precision of operation parameter collection, and includes pressure calibration, flow calibration, temperature calibration and other calibrations.

[0063] The permission management module is used for managing and limiting the login and operation permissions of the test control system.

[0064] The log query module is used for recording and quickly querying the operation log, login log and alarm log of the test system.

[0065] The aviation hydraulic pump test control method provided in the embodiment is the same as the method described in embodiment one, and thus will not be described herein.

[0066] Compared with embodiment one, the aviation hydraulic pump test control method and control system provided in the embodiment have more functions and better user experience.

[0067] The above-mentioned are only embodiments of the present application, and the common knowledge of specific structures and characteristics in the scheme is not described too much herein. The ordinary skilled person in the art knows all the ordinary technical knowledge in the field of the present application before the application date or the priority date, can know all the prior art in the field, and has the ability to apply conventional experimental means before that date. The ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, combined with their own ability. Some typical known structures or known methods should not be an obstacle for the ordinary skilled person in the art to implement the present application. It should be noted that, for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application. These will not affect the effect and practicality of the patent. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. An aviation hydraulic oil test control system, including a central processing unit, characterized in that, It also includes a test control module and a test configuration module that communicate with each other and are connected to the central processing unit; the test configuration module is used to configure test parameters for the aviation hydraulic oil test bench and generate a preset test configuration; the test control module includes an automatic control submodule; the automatic control submodule is used to call the preset test configuration and, according to the preset test configuration, control the operation of the aviation hydraulic oil test bench according to the automatic control strategy, and when the aviation hydraulic oil test bench is operating, the test parameters fluctuate cyclically. The test parameters include target values ​​for hydraulic pump speed, throttle valve opening / closing ratio, heating temperature, cooling temperature, PV2 pressure, and DC1 enable; as well as control start-up time, control adjustment time, and control maintenance time corresponding to each target value. The automatic control strategy is to adjust the test parameters according to preset time nodes, so that the test parameters fluctuate up and down according to preset proportion values. When the automatic control submodule controls the operation of the aviation hydraulic oil test bench, the various test parameters increase according to the preset growth rate. The preset time node is a fixed time after the start of the test operation, which is counted as one cycle; the fluctuation increase and decrease according to the preset ratio value specifically means that the test parameter value in different cycles is selected from the set test parameter value, or the test parameter value plus the fluctuation value, or the test parameter value minus the fluctuation value, with the set test parameter value as the benchmark value; the preset growth rate is determined by the control start time, control adjustment time and control maintenance time corresponding to each target value in the test parameters.

2. The aviation hydraulic oil test control system according to claim 1, characterized in that, The test configuration module includes a channel setting submodule, a process setting submodule, and a setting correction submodule; the channel setting submodule is used to select test configuration items to participate in the configuration; the process setting submodule is used to input test parameters and form a preset test configuration; The settings correction submodule is used to create, correct, or delete preset test configurations.

3. The aviation hydraulic oil test control system according to claim 1, characterized in that, The test control module also includes a data display submodule; the data display submodule is used to display the operating parameters of the aviation hydraulic oil test bench acquired in real time.

4. The aviation hydraulic oil test control system according to claim 3, characterized in that, The operating parameters include: aviation hydraulic oil flow rate, aviation hydraulic oil temperature, and aviation hydraulic oil pressure at key nodes of the aviation hydraulic oil test bench.

5. The aviation hydraulic oil test control system according to claim 3, characterized in that, When displaying the operating parameters of the aviation hydraulic oil test bench acquired in real time, the data display submodule uses a waveform graph, and the sampling rate of the waveform graph is adjustable.

6. The aviation hydraulic oil test control system according to claim 1, characterized in that, The test control module also includes a manual control submodule; the manual control submodule is used to provide manual real-time operation functions.

7. A test control method for aviation hydraulic pumps, characterized in that, The application of the aviation hydraulic oil test control system as described in any one of claims 1-6 includes the following steps: Step 1: Input the test parameters to obtain the preset test configuration; Step 2: Invoke the preset test configuration; Step 3: Control the operation of the aviation hydraulic oil test bench according to the automatic control strategy, and control the test parameters to fluctuate up and down according to the preset proportional value and preset time node.

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