CN103884285B - A displacement amount of the movable member Test Method - Google Patents

A displacement amount of the movable member Test Method Download PDF

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Publication number
CN103884285B
CN103884285B CN 201210562985 CN201210562985A CN103884285B CN 103884285 B CN103884285 B CN 103884285B CN 201210562985 CN201210562985 CN 201210562985 CN 201210562985 A CN201210562985 A CN 201210562985A CN 103884285 B CN103884285 B CN 103884285B
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displacement
encoder
step
movable member
signal
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CN103884285A (en )
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李瑞平
巴唐尧
万宇
余雄勇
罗毅
余忠烜
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中国直升机设计研究所
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Abstract

本发明涉及直升机试飞、试验的测试技术领域,特别是涉及一种动部件位移量的测试方法。 The present invention relates to a helicopter flight test technical field tests, in particular the amount of displacement of the movable member is directed to a method of testing. 本方法的步骤如下:第一步;激光位移传感器采集动部件的位移变化量,生成位移信号发送至采集编码器;第二步;采集编码器将位移信号转换为PCM码流信号,通过集流环发送至主编码器;第三步;主编码器将PCM码流信号转化为符合S波段发射的数字信号,并通过发射机发射;同时,将数字信号发送至记录器记录;第四步,接收机接收到数字信号,解码后,显示在监控显示器上。 This method comprises the following steps: first step; laser displacement sensor to collect an amount of the movable member displacement, the displacement signal to generate acquisition encoder; second step; acquisition displacement encoder signal into a PCM stream signal, by collecting transmitted to the master encoder ring; a third step; main encoder the PCM stream signal into a digital signal line with S-band transmission, and transmitting by the transmitter; while transmitting the digital signal to the recorder for recording; a fourth step, the receiver receives the digital signal, decoded, is displayed on the monitor display. 本发明实现动部件位移量测试方法采用真实准确的传感器将位移变化量转换为电量,再将电量转换成PMC码流进行传输,可实现远程的实时监控的准确测试。 The present invention enables the displacement amount of the movable member is true and accurate test method using sensor converts the displacement amount of power, then the power is converted into bit stream for transmission PMC, enabling real-time remote monitoring of the exact test.

Description

一种动部件位移量的测试方法 A displacement amount of the movable member Test Method

技术领域 FIELD

[0001]本发明涉及直升机试飞、试验的测试技术领域,特别是涉及一种动部件位移量的测试方法。 [0001] The present invention relates to a helicopter flight test technical field trials, particularly relates to a method for testing the amount of displacement of the movable member.

背景技术 Background technique

[0002]依据CCAR-29R1规定中的适航要求,直升机在地面共振试验中必须实时测试和监控动部件在各种激振状态下的位移变化量,该项目是考核直升机安全性能的重要参数。 [0002] According airworthiness requirements specified in CCAR-29R1, must change helicopter ground resonance testing and monitoring in real time the amount of displacement of the movable member in a state of excitation of the various tests, the item is an important parameter of safety assessment helicopter. 测试该参数的准确度直接影响其测试结果。 The accuracy of the test parameters directly affect the test results. 动部件包括主桨阻尼器、尾桨阻尼器、小拉杆、挥舞支臂等。 The movable member includes a main pitch damper, the damper tail rotor, small rod, swinging arm and the like.

[0003] 以往的测试方法是采用线位移传感器将位移变化量转换为电压变化量进行测量, 由于动部件在桨叶旋转时不仅有轴向的伸缩位移变化,还有横滚的扭转位移变化量。 [0003] The conventional test method is to use the linear displacement sensor to measure displacement variation converted to a voltage change amount, not only because the movable member has an axial telescopic displacement during rotation of the blade, as well as the amount of torsional displacement of the roll . 使得测试轴向的伸缩位移变化量准确度不高,传感器的拉线也容易在动部件扭时被绞拌而拉断,测试的准确度低,重复性差。 Such that the axial displacement variation test telescopic accuracy is not high, the sensor cable can easily be twisted mix is ​​pulled off the movable member when the twist, the low accuracy of the test, poor reproducibility. 工作效率低。 Low efficiency.

发明内容 SUMMARY

[0004] 本发明的目的: [0004] The object of the present invention:

[0005]本发明为实现安全可靠、有效地进行直升机地面共振试验的实时监控,并对动部件在直升机不同激励状态时的伸缩量进行准确测量,故设计该测试方法。 [0005] The present invention is to achieve safe and effective real-time monitoring of helicopter ground resonance experiment, the amount of the movable telescopic member and at different excitation state helicopter accurate measurements, so the design of the test method.

[0006] 本发明的技术方案: [0006] The technical solution of the present invention:

[0007] —种动部件位移量的测试方法,本发明使用的测试系统包括激光位移传感器、采集编码器、集流环,主编码器,记录器,发射机,接收机和监控显示器,其中,激光位移传感器、采集编码器安装在动部件上,主编码器、发射机、记录器安装在机舱内,接收机和监控显示器在地面,本方法的步骤如下: [0007] - the amount of displacement of the movable member species test method, the test system used in the present invention comprises a laser displacement sensor, an encoder collection, collector rings, master encoder, a recorder, a transmitter, a receiver and a display monitor, wherein laser displacement sensor, an encoder mounted on the collecting member moving, the main encoder, the transmitter, the recorder installed in the nacelle, the receiver and the monitor display on the ground, the step of the present method are as follows:

[0008]第一步;激光位移传感器采集动部件的位移变化量,生成位移信号发送至采集编码器; [0008] The first step; collecting laser displacement sensor movable member displacement deviation, generates a displacement signal to the acquisition encoder;

[0009]第二步;采集编码器将位移信号转换为PCM码流信号,通过集流环发送至主编码器; [0009] The second step; acquisition displacement encoder signal into a PCM stream signal is transmitted to the primary encoder by the slip ring;

[0010]第三步;主编码器将PCM码流信号转化为符合S波段发射的数字信号,并通过发射机发射;同时,将数字信号发送至记录器记录; [0010] The third step; main encoder the PCM stream signal into a digital signal line with S-band transmission, and transmitting by the transmitter; while transmitting the digital signal to the recorder for recording;

[0011] 第四步,接收机接收到数字信号,解码后,显示在监控显示器上。 [0011] The fourth step, the digital signal received by the receiver, decoded, is displayed on the monitor display.

[0012] 本发明的技术效果: [0012] Technical effects of the invention:

[0013] 本发明实现动部件位移量测试方法采用准确高的激光位移传感器将位移变化量转换为电压信号的变化量,再将电压变化量转换成PMC码流进行传输,可实现远程的实时监控和准确测试。 [0013] The present invention achieves the movable member displacement amount test method employed to convert the amount of displacement of the change amount of the voltage signal of high accuracy laser displacement sensor, then converted into a voltage change amount PMC stream for transmission, enabling real-time remote monitoring and accurate test.

[0014]测试系统采用UMA2000(或KM500)机载数据采集系统,具有可编程模块化分布式结构,满足IRIG-106PCM标准。 [0014] Test system uses UMA2000 (or KM500) onboard data acquisition system having a programmable modular distributed architecture, IRIG-106PCM meet the standard. 具有体积小,重量轻、易安装。 Small size, light weight, easy to install. 且测试信号不受传输路径的影响。 And the test signal transmission path is not affected.

[0015]动部件上测试轴向伸缩量,采用激光位移传感器可避免不规则机械运动影响时的不真实测试误差。 [0015] Tests on the amount of axial stretching movable member, using a laser displacement sensor can avoid false test errors affect irregular mechanical motion. 保证测试结果的真实性。 Guarantee the authenticity of the test results.

[0016]通过采用激光位移传感器测试主桨阻尼器位移变化量的方法,直升机地面共振试验中避免了试验结果无效要反复进行多次试验的情况。 [0016] By using a laser displacement measurement change amount of the main rotor damper displacement sensor method, the helicopter ground resonance assay avoids invalidate the test is repeated for a case where multiple tests. 该方法具有如下优点: This method has the following advantages:

[0017] 1、避免动部件不规则运动的影响; [0017] 1, to avoid the influence of the irregular movement of the movable member;

[0018] 2、测试结果准确、进行实时监控; [0018] 2, the test results are accurate, real-time monitoring;

[0019] 3、节约时间、节省资源、提高效率。 [0019] 3, save time, save resources and improve efficiency.

附图说明 BRIEF DESCRIPTION

[0020]图1为本发明的流程图。 [0020] FIG. 1 is a flowchart of the present invention.

具体实施方式 detailed description

[0021]下面对本发明做进一步详细说明。 [0021] The following further detailed description of the present invention.

[0022] 一种动部件位移量的测试方法,本发明使用的测试系统包括激光位移传感器、采集编码器、集流环,主编码器,记录器,发射机,接收机和监控显示器,其中,激光位移传感器安装在动部件上,采集编码器、主编码器和发射机安装在直升机不动件上,记录器安装在机舱内,接收机和监控显示器在地面,本方法的步骤如下: [0022] The amount of displacement of the movable member a method of testing, the test system of the present invention comprises a laser displacement sensor, an encoder collection, collector rings, master encoder, a recorder, a transmitter, a receiver and a display monitor, wherein laser displacement sensor mounted on the movable member, collecting the encoder, and a transmitter main encoder mounted on the fixed member helicopter recorder installed in the nacelle, the receiver and the monitor display on the ground, the step of the present method are as follows:

[0023] 第一步;根据测试要求选择性能指标满足要求的激光位移传感器,设计激光位移传感器的安装方法,激光位移传感器的测量范围要大于动部件伸缩量的1.2倍以上,激光反射板的外形尺寸要能够覆盖动部件的运动轨迹,将激光位移传感器安装好。 [0023] The first step; laser displacement sensor according to the test requirements to meet the requirements of selected performance indicators, the installation method of designing a laser displacement sensor, laser displacement sensor measuring a range of 1.2 times or more greater than the expansion amount of the movable member, the shape of the laser reflector plate to be able to cover the size of the trajectory of the movable member, the laser displacement sensor is installed. 激光位移传感器采集动部件的位移变化量,生成位移变化量对应的电压信号变化量发送至采集编码器。 Collecting laser displacement sensor movable member displacement amount of change, the amount of displacement generates a voltage signal corresponding to the change amount of transmitted acquisition encoder.

[0024] 第二步;采集编码器将位移信号转换为PCM码流信号,采集编码器要尽可能地安装在传^器附近,以减小电压信号的传输损失,采集编码器的采样率设置在满足要求的采样率,米集编码器将测试的电压信号转换成满足IRIG-106PCM标准的PCM码流的数字信号。 [0024] The second step; acquisition displacement encoder signal into a PCM stream signal to the encoder as acquisition mounted near ^ pass filter to reduce the transmission loss of voltage signal acquisition sampling rate settings of the encoder the sampling rate to meet the requirements, the collector voltage signal encoder test meter into IRIG-106PCM meet standard PCM digital signal stream. PCM 码流的数字信号通过集流环传送至主编码器。 A digital signal is transmitted to the PCM stream by the main encoder slip rings.

[0025]第三步;主编码器将PCM码流信号转化为符合S波段发射的数字信号,主编码器将测试的i所有信号进行编译,为提高传输效率在设置数据帧结构时要使PCM码流的帧结构合理,提高数据传输的波特率。 [0025] The third step; main encoder the PCM stream signal into a digital signal S-band transmit meet, i of all of the test signal from the main encoder to be compiled, to improve the transmission efficiency in the setting data to make PCM frame structure reasonable stream frame structure, improve the baud rate of data transmission. PCM码流编译完成后分成两路,一路发送到功率分配器通过发射机发射无线信号。 After compilation PCM stream is divided into two parts, one to transmit signals through the wireless transmitting power divider transmitter. 同时另一路发送至记录器记录。 While another recorder records transmitted to the road.

[0026]第四步,接收机接收到数字信号,解码后,显示在监控显示器上。 [0026] The fourth step, the digital signal received by the receiver, decoded, is displayed on the monitor display.

[0027]实施例1:以下以对主桨阻尼器的测量的为例对本发明作进一步详细说明: [0027] Example 1: In the measurement of the main rotor blades of an example of the damper of the present invention will be further described in detail:

[0028]在某型机适航取证的地面共振试验中使用该方法具体步骤如下: [0028] Using this method the following steps in a certain type of machine GVT airworthiness certification of:

[0029]该方法的主要功能是实现直升机在地面共振试验中实时测试主桨阻尼器在各种激振状态下的位移变化量的监控并测试其真实数值。 [0029] The main function of this method is implemented in a helicopter ground resonance assay variation of real-time testing of the main rotor damper displacement under various excitation state monitoring and test its true value.

[0030]第一步;根据测试要求选择性能指标满足要求的MI CRO-EPS ILON公司的0PT0NCDT1402-100型的激光位移传感器,激光位移传感器的测量范围为100mmM,激光反射板的外形尺寸为3X200X300mmM的不锈钢板,能够覆盖动部件的运动轨迹,将激光位移传感器安装在该型机的4#主桨阻尼器上,连接好外部线缆。 [0030] The first step; selected according to the test performance requirements to meet the requirements MI CRO-EPS ILON's 0PT0NCDT1402-100 type laser displacement sensor, laser displacement sensor measuring range is 100mmM, reflected laser dimensions of the plate is 3X200X300mmM stainless steel plate, the movable member can cover the trajectory of the laser displacement sensor is mounted on the kind, the damper main rotor # 4, connect external cables. 激光位移传感器采集动部件的位移变化量,生成位移变化量对应的电压信号变化量发送至采集编码器。 Collecting laser displacement sensor movable member displacement amount of change, the amount of displacement generates a voltage signal corresponding to the change amount of transmitted acquisition encoder.

[0031]第二步;采集编码器采用UMA2000机载数据采集系统,采集编码器将位移信号转换为PCM码流信号,采^编码器安装在直升机中央顶部,在传感器附近。 [0031] The second step; UMA2000 acquisition encoder uses onboard data acquisition system, the acquisition displacement encoder signal into a PCM stream signal, Cai ^ encoder mounted at the top center of the helicopter, in the vicinity of the sensor. 采集编码器采用UMA2014-LV电压量采集模块,采样率设置为认他,采集编码器将测试的电压信号转换成满足IRIG-106PCM标准的PCM码流的数字信号。 The encoder uses digital signal acquisition UMA2014-LV voltage acquisition module, the sampling rate is set to recognize him, the voltage test signal acquisition encoder into IRIG-106PCM meet standard PCM stream. PCM码流的数字信号通过集流环传送至主编码器。 A digital signal is transmitted to the PCM stream by the main encoder slip rings.

[0032]第三步;主编码器将PCM码流信号转化为符合S波段发射的数字信号,主编码器采用UMA2ie〇功能模块,主编码器将测试的所有信号进行编译,为提高传输效率在设置数据帧结构时要使PCM码流的帧结构合理,数据传输的波特率设置为zsOOObit/SACM码流编译完成后分成两路,一路发送到功率分配器通过发射机发射无线信号。 [0032] The third step; main encoder the PCM stream signal into a digital signal to conform to the S-band emission, the main encoder uses all signals UMA2ie〇 function modules, main encoder test is compiled, in order to improve the transmission efficiency For reasonable frame structure of the PCM stream data frame structure is provided when the data transmission rate to set zsOOObit / SACM compiled code stream is divided into two parts, one to transmit signals through the wireless transmitting power divider transmitter. 同时另一路发送至记录器记录。 While another recorder records transmitted to the road.

[0033]第四步,根据据要求配置遥测系统,并进行调试,接收机接收到数字信号解码后, 显示在监控显示器上。 [0033] The fourth step, the configuration according to the telemetry system according to the requirements, and commissioning, after decoding the digital signal received by the receiver, displayed on the monitor display.

[0034]该方法在该型机适航取证的地面共振试验中得到验证,并取得了满意的效果,此后在其他型号ZXX-01架机的尾桨阻尼器的位移变化量的测试中也取得成功。 [0034] The test method has been verified in kind, ground resonance airworthiness certification, and achieved satisfactory results, then also acquires the amount of change of the tail rotor displacement damper other models ZXX-01 airplane tests success.

Claims (2)

  1. 1.一种动部件位移量的测试方法,本方法使用的测试系统包括激光位移传感器、采集编码器、集流环、主编码器、记录器、发射机、接收机和监控显示器,其中,激光位移传感器安装在动部件上,采集编码器、主编码器和发射机安装在直升机不动件上,记录器安装在机舱内,接收机和监控显示器在地面,其特征是,本方法的步骤如下: 第一步光位移传感器采集动部件的位移变化量,生成位移信号发送至采集编码器; 第二步;采集编码器将位移信号转换为PCM码流信号,通过集流环发送至主编码器; 第三步;主编码器将PCM码流信号转化为符合S波段发射的数字信号,并通过发射机发射;第四步,接收机接收到数字信号,解码后,显示在监控显示器上。 CLAIMS 1. A method for testing the amount of displacement of the movable member, the method used in the test system comprises a laser displacement sensor, an encoder collection, collector rings, master encoder, a recorder, a transmitter, a receiver and a display monitor, wherein the laser a displacement sensor mounted on the movable member, collecting the encoder, and a transmitter main encoder mounted on the fixed member helicopter recorder installed in the nacelle, the receiver and the monitor display on the ground, characterized in that the steps of the method are as follows : the first step in collecting the optical displacement sensor movable member displacement amount, the displacement signal to generate acquisition encoder; second step; acquisition displacement encoder signal into a PCM stream signal is transmitted to the primary encoder by slip rings ; third step; main encoder the PCM stream signal into a digital signal S-band transmission line with, and transmitting by the transmitter; a fourth step, the digital signal received by the receiver, decoded, is displayed on the monitor display.
  2. 2.如权利要求1所述的一种动部件位移量的测试方法,其特征是,在所述的第三步中同时,还将将数字信号发送至记录器记录。 2. An amount of displacement of the movable member of the test method according to claim 1, characterized in that, simultaneously, the digital signal will also be sent to the recorder records in said third step. ' '
CN 201210562985 2012-12-21 2012-12-21 A displacement amount of the movable member Test Method CN103884285B (en)

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