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Intelligent active control type high-pressure pipeline pressure pulsation damping device and method
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A high-pressure pipeline and pressure pulsation technology, applied in the direction of pipe components, pipes/pipe joints/fittings, mechanical equipment, etc., can solve problems such as accidents, pipeline fatigue damage, etc.
Pending Publication Date: 2021-04-23
NORTHEASTERN UNIV
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[0005] In the aviation hydraulic pipeline system, due to the excitation pulsation of the pump source and the existence of the basic excitation, when the frequency of the pressure pulsation of the pump source or the frequency of the basic excitation is the same or close to the frequency of the pipeline, resonance or beating vibration will occur. The vibration has little effect on the pipeline, but the long-term vibration will
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Embodiment 1
[0065] First, see figure 1 , figure 2 , image 3 , this embodiment provides an intelligent active control type high-pressure pipeline pressure pulsation damping device, the device includes: input pressure sensor 2, signal conditioning unit 3, A / D module 4, output pressure sensor 5, control unit 6, D / A module 7, intelligent active control high pressure pipeline pressure pulsation damping device 9.
[0066] The signal conditioning unit 3 includes a first signal conditioning unit 31 and a second signal conditioning unit 32 .
[0067] The A / D module 4 includes a first A / D module 41 and a second A / D module 42;
[0068] The input pressure sensor 2 is located at the entrance of the intelligent active control high-pressure line pressure pulsation dampening device 9 and connected to the input end of the first signal conditioning unit 31 .
[0069] The output end of the first signal conditioning unit 31 is connected to the input end of the first A / D module 41 .
[0070] The output...
Embodiment 2
[0091] In the second aspect, see Figure 5 , this embodiment also provides a control method based on any of the above-mentioned intelligent active control type high-pressure pipeline pressure pulsation damping devices, including:
[0092] S1. Using an input pressure sensor to obtain pressure pulsation information of a high-pressure pipeline.
[0093] S2. The information conversion device converts the vibration information into corresponding data information.
[0094] S3. The control unit obtains information on the vibration frequency, amplitude and phase of the pressure pulsation of the high-pressure pipeline according to the data information, and finally determines the vibration of the high-pressure pipeline through data processing and analysis of the pressure pulsation data and the model of the high-pressure pipeline For frequency, magnitude and phase data information, see Figure 8 . An incremental PID control algorithm is used to process the data information, a control ...
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Abstract
The invention relates to an intelligent active control type high-pressure pipeline pressure pulsation damping device and method. The device comprises an input pressure sensor, a signal conditioning unit, an A/D module, an output pressure sensor, a control unit, a D/A module and an intelligent active control type high-pressure pipeline pressure pulsation damping device body. The signal conditioning unit comprises a first signal conditioning unit and a second signal conditioning unit; the A/D module comprises a first A/D module and a second A/D module; the output end of the first signal conditioning unit is connected with the input end of the first A/D module; the output end of the first A/D module is connected with the input end of the control unit; the output end of the second signal conditioning unit is connected with the input end of the second A/D module; the output end of the second A/D module is connected with the input end of the control unit; the output end of the control unit is connected with the input end of the D/A module; the output end of the D/A module is connected with the intelligent active control type high-pressure pipeline pressure pulsation damping device body; and the intelligent active control type high-pressure pipeline pressure pulsation damping device body comprises a high-pressure pipeline and a ring type piezoelectric stack actuating unit.
Description
technical field [0001] The invention relates to the technical fields of vibration mechanics and active control, in particular to an intelligent active control type high pressure pipeline pressure pulsation damping device and method. Background technique [0002] The aviation high-pressure hydraulic pipeline system will produce large-scale forced vibration under the excitation of the pump source, the foundation excitation or the combination of the two. Due to the excessive excitation force or even resonance, it will directly lead to the connection of the high-pressure pipeline system and the coordination of the fixed parts. Large relative displacement occurs on the surface, and the collision between the pipeline and the adjacent pipeline is prone to occur. The stiffness of the clamp connection decreases and the clamp is pulled out, and even due to the high vibration stress, the crack in the pipeline expands until it breaks. Therefore, the vibration suppression technology of t...
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