CN111268166B - Actuating cylinder vibration detection device - Google Patents
Actuating cylinder vibration detection device Download PDFInfo
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- CN111268166B CN111268166B CN201911262367.XA CN201911262367A CN111268166B CN 111268166 B CN111268166 B CN 111268166B CN 201911262367 A CN201911262367 A CN 201911262367A CN 111268166 B CN111268166 B CN 111268166B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
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Abstract
The embodiment of the invention discloses a vibration detection device for an actuating cylinder, which comprises: the device comprises a signal acquisition module, a signal conditioning module and an alarm function module; the signal acquisition module is used for acquiring a vibration signal of the actuator cylinder where the signal acquisition module is located, converting the vibration signal into a voltage signal and transmitting the voltage signal to the signal conditioning module; the signal conditioning module is connected with the signal acquisition module and is used for shaping the irregular voltage signals and transmitting the irregular voltage signals to the alarm function module; and the alarm function module is connected with the signal conditioning module and used for logically judging the shaped voltage signal and giving an alarm when determining whether the actuator cylinder in which the alarm function module is positioned is the first vibrating actuator cylinder. The embodiment of the invention realizes that the vibration actuator cylinder is quickly and accurately found in the static force/fatigue test process of the full-size airplane, so that test control personnel can adjust control parameters in time and the stable operation of the test is ensured.
Description
Technical Field
The application relates to the technical field of static force/fatigue tests of airplanes, in particular to a vibration detection device for an actuating cylinder.
Background
In a full-scale aircraft static/fatigue test, sudden vibration of the actuator cylinder can cause sudden changes in load, which can cause serious consequences of test out-of-tolerance or over-limit protection. Therefore, it is necessary to quickly and accurately find the vibration actuator cylinder and adjust the relevant control parameters in time. In the full-machine test, because a plurality of load points exist, and the vibration of one load point cylinder can cause the vibration of a plurality of adjacent load point cylinders, the cylinder which starts to vibrate is difficult to find no matter on site or in a control machine room.
Through single-actuator debugging tests, unreasonable control parameter settings were found to be the main cause of actuator vibration. Some of the small frictional vibrations are caused by physical characteristics of the ram itself, such as smoothness of the cylinder, installation clearance, etc.; the friction vibration has little influence on the test, and can be found and adjusted in time in the single-point debugging process. Among the causes of the vibration of the ram due to the control parameter setting, for example, the vibration of the ram is caused by the excessive setting of the proportional gain, the integral gain and the valve vibration, and there is a possibility that the following performance of the ram is good at the time of single-point debugging (in the case of a small load) and the ram vibrates violently in the main test (in the case of a large load). However, if the proportional gain, the integral gain, and the valve hunting are set too small to avoid the vibration of the ram, the ram followability is not good, and the number of steps increases during the test. At present, due to the limitation of test conditions, the setting method of control parameters is mainly based on experience, and the vibration phenomenon of the actuating cylinder in the test cannot be completely avoided.
Disclosure of Invention
In order to solve the technical problem, an embodiment of the invention provides a vibration detection device for an actuator cylinder, so that the vibration actuator cylinder can be quickly and accurately found in the static force/fatigue test process of a full-size airplane, test control personnel can adjust control parameters in time, and the stable operation of the test is ensured.
The embodiment of the invention provides a vibration detection device for an actuating cylinder, which comprises: the device comprises a signal acquisition module, a signal conditioning module and an alarm function module;
the signal acquisition module is used for acquiring a vibration signal of the actuator cylinder where the signal acquisition module is located, converting the vibration signal into a voltage signal and transmitting the voltage signal to the signal conditioning module;
the signal conditioning module is connected with the signal acquisition module and is used for shaping irregular voltage signals and transmitting the irregular voltage signals to the alarm function module;
and the alarm function module is connected with the signal conditioning module and is used for logically judging the shaped voltage signal and giving an alarm when determining whether the actuator cylinder in which the alarm function module is positioned is the first vibrating actuator cylinder.
Optionally, in the actuator cylinder vibration detecting apparatus as described above, the signal collecting module is a detecting sensor, and the detecting sensor is a passive magnetoelectric vibration speed sensor;
the detection sensor is used for converting the relative movement of the actuating cylinder in which the detection sensor is arranged in the magnetic field generated by the detection sensor into a voltage signal and transmitting the voltage signal to the signal conditioning module.
Alternatively, in the ram vibration detecting apparatus as described above, the relative movement of the ram in the magnetic field generated by the detection sensor includes vibration, as well as displacement and rotation speed.
Optionally, in the ram vibration detecting apparatus as described above, the signal conditioning module includes: an integrating circuit, a proportional amplifying circuit and a peak value detecting circuit;
the integrating circuit is used for filtering high-frequency interference components in the output signal of the detection sensor and performing integration processing on positive and negative pulses of the signal;
the proportional amplifying circuit is used for carrying out linear reduction on the signal subjected to the integral processing;
and the peak value detection circuit is used for stabilizing the amplitude of the signal after linear reduction.
Optionally, in the ram vibration detecting apparatus described above, the alarm function module includes: the analog-to-digital conversion A/D sampling circuit, the micro control unit MCU circuit and the alarm circuit;
the A/D sampling circuit is used for carrying out A/D sampling on the signals processed by the signal conditioning module, converting the acquired signals into digital signals and transmitting the digital signals to the MCU circuit;
the MCU circuit is used for carrying out logic judgment on the data signals transmitted from the A/D sampling circuit so as to determine whether the actuator cylinder where the MCU circuit is located is the first vibrating actuator cylinder, and starting the alarm circuit to give an alarm when the actuator cylinder where the MCU circuit is located is the first vibrating actuator cylinder, wherein the alarm mode of the alarm circuit comprises at least one of the following modes: sound alarm and light alarm.
Optionally, in the actuator cylinder vibration detecting apparatus described above, the MCU circuit performs logical judgment, and the logical judgment includes:
the MCU circuit is also used for judging whether the currently detected vibration value is larger than or equal to a preset threshold value or not, and confirming that the actuator cylinder where the current detected vibration value is located is the first vibrating actuator cylinder when the currently detected vibration value is judged to be larger than or equal to the threshold value.
Alternatively, in the ram vibration detecting apparatus as described above,
the preset threshold is 10 hertz.
Alternatively, in the ram vibration detecting apparatus as described above,
and the MCU circuit is also used for continuing monitoring when the actuator cylinder where the MCU circuit is positioned is determined not to be the actuator cylinder with the first vibration.
Optionally, in the ram vibration detection apparatus described above, the ram vibration detection apparatus is provided on an outer cylinder of a ram used to perform a full-scale aircraft static/fatigue test.
The actuator cylinder vibration detection device provided by the embodiment of the invention comprises: the device comprises a signal acquisition module, a signal conditioning module and an alarm function module, wherein the signal acquisition module is used for acquiring vibration signals of the actuating cylinders and converting the vibration signals into voltage signals, the signal conditioning module is used for shaping the acquired voltage signals, the shaped signals are logically judged, and an alarm is given when whether the actuating cylinders are the first vibration actuating cylinders is determined. The actuator cylinder vibration detection device adopts a highly integrated embedded structure, has small volume and light weight, and is suitable for test site environment; the actuator cylinder vibration detection device is high in measurement accuracy, strong in real-time performance and strong in anti-interference capability. The actuator cylinder vibration detection device provided by the embodiment of the invention can accelerate the detection efficiency, shorten the detection period, and quickly and accurately find the vibration actuator cylinder in the running process of the full-size aircraft structure static force/fatigue test so as to ensure the smooth running of the full-size aircraft structure static force/fatigue test. In addition, the actuating cylinder vibration detection device is arranged on the actuating cylinder outer cylinder, and is convenient to install and simple to operate.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a schematic structural view of a vibration detecting apparatus for an actuator cylinder according to an embodiment of the present invention;
fig. 2 is a schematic structural view of another actuator cylinder vibration detecting apparatus according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a signal conditioning module in the vibration detecting apparatus for an actuator cylinder according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an alarm function module in the vibration detection apparatus for the actuator cylinder according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The following specific embodiments of the present invention may be combined, and the same or similar concepts or processes may not be described in detail in some embodiments.
Fig. 1 is a schematic structural diagram of a vibration detecting apparatus for a ram according to an embodiment of the present invention. The actuator cylinder vibration detection apparatus provided in this embodiment may include: a signal acquisition module 110, a signal conditioning module 120 and an alarm function module 130.
The actuator cylinder vibration detection device provided by the embodiment of the invention comprises three modules as shown in fig. 1, a signal acquisition module 110, a signal conditioning module 120 and an alarm function module 130; the signal acquisition module 110 is connected to the signal conditioning module 120, and the signal conditioning module 120 is further connected to the alarm function module 130.
First, the vibration signal is converted into a voltage signal by the signal acquisition module 110. Secondly, the signal conditioning module 120 is utilized to perform shaping processing on the irregular voltage signal, wherein the shaping processing includes integration, amplification, peak detection, and the like. Finally, the alarm function module 130 performs logic judgment and comparison processing on the received signal, and then alarms according to the judgment result.
In practical applications, the alarm function module 130 issues an alarm when determining whether the ram is the first vibrating ram.
As shown in fig. 1, the signal acquisition module 110 in the embodiment of the present invention may be a detection sensor 111, the detection sensor 111 employs a passive magnetoelectric vibration speed sensor, has a high sensitivity and a wide frequency response, and can convert the relative motion of a conductor (e.g., a cylinder in which the conductor is located) in a magnetic field into an electrical signal (induced electromotive force) by using an electromagnetic induction principle (magnetoelectric effect), wherein the relative motion of the cylinder in the magnetic field generated by the detection sensor 111 may include vibration, displacement and rotation speed.
Optionally, the signal conditioning module 120 in the embodiment of the present invention may include: an integrating circuit 121, a proportional amplifying circuit 122, and a peak detecting circuit 123.
In the embodiment of the present invention, the signal conditioning module 120 passes the voltage signal output by the detection sensor 111 into the integrating circuit 121, filters out high frequency interference components in the signal output by the detection sensor 111, and performs integration processing on positive and negative pulses of the signal, so that the pulse signal becomes relatively stable and even approaches to a triangular wave signal; the signal is then linearly scaled down by a scaling circuit 122, and the amplitude of the signal is stabilized by a peak detection circuit 122.
Optionally, the alarm function module 130 in the embodiment of the present invention may include: an analog-to-digital conversion (A/D) sampling circuit 131, a Micro Control Unit (MCU) circuit 132 and an alarm circuit 133.
In the embodiment of the present invention, the a/D sampling circuit 131 in the alarm function module 130 performs a/D sampling on the signal processed by the signal conditioning module 120, performs analog-to-digital conversion, and sends the digital signal obtained by the conversion to the MCU circuit 132 for logic judgment to determine whether the actuator cylinder in which the a digital signal is located is the first vibrating actuator cylinder, and when it is determined that the actuator cylinder in which the digital signal is located is the first vibrating actuator cylinder, the alarm circuit 133 is started to alarm; if it is determined that the ram is not the first vibrating ram, monitoring continues.
In an implementation manner of the embodiment of the present invention, an implementation manner of the MCU circuit 133 performing logic judgment may include:
and judging whether the currently detected vibration value is greater than or equal to a preset threshold value, and when the currently detected vibration value is greater than or equal to the threshold value, determining that the actuator cylinder in which the currently detected vibration value is located is the first vibrating actuator cylinder.
Alternatively, the preset threshold may be 10 hertz (Hz).
Optionally, the alarm mode of the alarm circuit in the embodiment of the present invention includes at least one of the following: sound alarm and light alarm.
The actuator cylinder vibration detection device provided by the embodiment of the invention is arranged on the outer cylinder of the actuator cylinder for carrying out the full-size aircraft static force/fatigue test, as shown in fig. 3, the actuator cylinder vibration detection device provided by the embodiment of the invention is a schematic diagram of the actuator cylinder on which the actuator cylinder vibration detection device is arranged, and the actuator cylinder vibration detection device arranged on the outer cylinder of the actuator cylinder can obviously receive vibration signals of the actuator cylinder.
The actuator cylinder vibration detection device provided by the embodiment of the invention comprises: the device comprises a signal acquisition module, a signal conditioning module and an alarm function module, wherein the signal acquisition module is used for acquiring vibration signals of the actuating cylinders and converting the vibration signals into voltage signals, the signal conditioning module is used for shaping the acquired voltage signals, the signal conditioning module is used for logically judging the shaped signals, and the alarm function module is used for giving an alarm when determining whether the actuating cylinders are the first vibration actuating cylinders. The actuator cylinder vibration detection device adopts a highly integrated embedded structure, has small volume and light weight, and is suitable for test site environment; the actuator cylinder vibration detection device is high in measurement accuracy, strong in real-time performance and strong in anti-interference capability. The actuator cylinder vibration detection device provided by the embodiment of the invention can accelerate the detection efficiency, shorten the detection period, and quickly and accurately find the vibration actuator cylinder in the running process of the full-size aircraft structure static force/fatigue test so as to ensure the smooth running of the full-size aircraft structure static force/fatigue test. In addition, the actuating cylinder vibration detection device is arranged on the actuating cylinder outer cylinder, and is convenient to install and simple to operate.
The operation of the vibration detecting apparatus for a ram according to the embodiment of the present invention will be described with reference to an embodiment.
Fig. 3 is a schematic circuit diagram of a signal conditioning module in the actuator vibration detecting apparatus according to an embodiment of the present invention.
The actual circuit structure of the signal conditioning module 120 in the embodiment of the present invention may refer to the circuit structure shown in fig. 4, but is not limited to the specific circuit structure shown in fig. 3.
Fig. 4 is a schematic structural diagram of an alarm function module in the vibration detection apparatus for a ram according to an embodiment of the present invention.
The a/D circuit in the alarm module 130 according to the embodiment of the present invention is, for example, an ADC chip, and the alarm circuit 133 is, for example, an audible and visual alarm.
The implementation steps of the vibration detection of the actuating cylinder by adopting the actuating cylinder vibration detection device provided by the embodiment of the invention can comprise:
a) The actuator cylinder vibration detection device is arranged on the outer cylinder of the actuator cylinder, as shown in figure 3, the actuator cylinder vibration detection device arranged on the outer cylinder of the actuator cylinder can obviously receive vibration signals;
b) A magnetoelectric vibration speed sensor in the signal acquisition module detects a vibration signal, converts the vibration signal into a voltage signal U1 and transmits the voltage signal U1 to the signal conditioning module;
c) The signal conditioning module inputs the voltage signal U1 into the integrating circuit, removes interference, stabilizes the signal to be U2, then scales down the signal to be U3, and stabilizes the signal amplitude U4 through the peak detection circuit to meet the ADC sampling requirement, as shown in FIG. 4;
d) And the alarm function module performs A/D sampling on the conditioned signal U4, performs logic judgment on the conditioned signal U4, and starts an alarm protection circuit to perform sound-light alarm if the currently detected vibration quantity meets a preset value (for example, more than or equal to 10 Hz).
Although the embodiments of the present invention have been described above, the above description is only for the purpose of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A ram vibration sensing apparatus comprising: the device comprises a signal acquisition module, a signal conditioning module and an alarm function module;
the signal acquisition module is used for acquiring a vibration signal of the actuator cylinder where the signal acquisition module is located, converting the vibration signal into a voltage signal and transmitting the voltage signal to the signal conditioning module;
the signal conditioning module is connected with the signal acquisition module and is used for shaping irregular voltage signals and transmitting the irregular voltage signals to the alarm function module;
the alarm function module is connected with the signal conditioning module and is used for logically judging the shaped voltage signal and sending an alarm when determining whether the actuator cylinder in which the alarm function module is positioned is the first vibrating actuator cylinder;
the signal acquisition module is a detection sensor, and the detection sensor is a passive magnetoelectric vibration speed sensor;
the detection sensor is used for converting the relative motion of the actuating cylinder in which the detection sensor is arranged in a magnetic field generated by the detection sensor into a voltage signal and transmitting the voltage signal to the signal conditioning module; and the relative motion of the ram in the magnetic field generated by the sensor includes vibration, as well as displacement and rotational speed.
2. The ram vibration detection apparatus of claim 1 wherein the signal conditioning module comprises: an integrating circuit, a proportional amplifying circuit and a peak value detecting circuit;
the integrating circuit is used for filtering high-frequency interference components in the output signal of the detection sensor and performing integration processing on positive and negative pulses of the signal;
the proportional amplifying circuit is used for carrying out linear reduction on the signal subjected to the integral processing;
and the peak value detection circuit is used for stabilizing the amplitude of the signal after linear reduction.
3. The ram vibration detector apparatus of claim 2 wherein said alarm function module comprises: the analog-to-digital conversion A/D sampling circuit, the micro control unit MCU circuit and the alarm circuit;
the A/D sampling circuit is used for carrying out A/D sampling on the signals processed by the signal conditioning module, converting the acquired signals into digital signals and transmitting the digital signals to the MCU circuit;
the MCU circuit is used for carrying out logic judgment on the data signals transmitted from the A/D sampling circuit so as to determine whether the actuator cylinder where the MCU circuit is located is the first vibrating actuator cylinder, and starting the alarm circuit to give an alarm when the actuator cylinder where the MCU circuit is located is the first vibrating actuator cylinder, wherein the alarm mode of the alarm circuit comprises at least one of the following modes: sound alarm and light alarm.
4. The actuator cylinder vibration detection device as set forth in claim 3, wherein said MCU circuit makes a logical decision including:
the MCU circuit is also used for judging whether the currently detected vibration value is larger than or equal to a preset threshold value or not, and confirming that the actuator cylinder where the current detected vibration value is located is the first vibrating actuator cylinder when the currently detected vibration value is judged to be larger than or equal to the threshold value.
5. The ram vibration detecting apparatus according to claim 4,
the preset threshold is 10 hertz.
6. The ram vibration detecting apparatus according to claim 3,
and the MCU circuit is also used for continuing monitoring when the actuator cylinder where the MCU circuit is positioned is determined not to be the actuator cylinder with the first vibration.
7. A ram vibration test apparatus as claimed in any one of claims 1 to 6 wherein the ram vibration test apparatus is provided on the outer barrel of a ram used in full scale aerostatic/fatigue tests.
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| CN201911262367.XA CN111268166B (en) | 2019-12-10 | 2019-12-10 | Actuating cylinder vibration detection device |
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| CN201911262367.XA CN111268166B (en) | 2019-12-10 | 2019-12-10 | Actuating cylinder vibration detection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3057623B2 (en) * | 1993-05-24 | 2000-07-04 | 日産ディーゼル工業株式会社 | Detector for foreign matter in the cavity of an object |
| CN2890860Y (en) * | 2005-12-08 | 2007-04-18 | 宁波大学 | Real-time detection and diagnosis system torsional vibration |
| CN201298293Y (en) * | 2008-10-14 | 2009-08-26 | 杭州中导电子技术有限公司 | GPS terminal device with vibration sensor |
| CN101762368B (en) * | 2009-12-28 | 2011-05-18 | 嘉兴学院 | Elastomer dynamic response and vibration control test system under time varying load effect |
| CN105965320B (en) * | 2016-04-25 | 2018-06-29 | 西安交通大学 | A kind of high-speed milling electro spindle flutter intelligent measurement and active suppression device |
| CN108287493A (en) * | 2017-12-04 | 2018-07-17 | 中国飞机强度研究所 | A kind of fatigue test signal transmitting apparatus |
| CN108303262A (en) * | 2018-01-19 | 2018-07-20 | 南京世界村汽车动力有限公司 | A kind of automobile engine on-line monitoring and fault diagnosis system |
| CN209181910U (en) * | 2018-11-15 | 2019-07-30 | 天津市盛丹电子技术发展有限公司 | A kind of shock detection digital processing circuit |
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