张京开. 基于虚拟仪器的绿篱机手柄三维振动测试[J]. 农业工程学报, 2010, 26(4): 127-133.
    引用本文: 张京开. 基于虚拟仪器的绿篱机手柄三维振动测试[J]. 农业工程学报, 2010, 26(4): 127-133.
    Three-dimensional vibration test on handles of hedge-trimmer based on virtual instrument[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2010, 26(4): 127-133.
    Citation: Three-dimensional vibration test on handles of hedge-trimmer based on virtual instrument[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2010, 26(4): 127-133.

    基于虚拟仪器的绿篱机手柄三维振动测试

    Three-dimensional vibration test on handles of hedge-trimmer based on virtual instrument

    • 摘要: 为了找出简单实用的测试绿篱机手柄三维振动的方法,将虚拟仪器技术应用于手柄三维振动测试,探索一种检测模式,使“通用硬件+软件设计=多套专用测试设备”变为现实。虚拟仪器的软件设计了达到实时准确采集、显示、试验数据处理的目的;试验方案的选择找出了各因素对测试结果的影响程度大小;通用硬件的配置减少了专用硬件的使用。试验结果表明,测试样机手柄振动值与发动机转速、安装位置和接触面积有关;左手柄在中转速、中部、小接触面积条件下振动值最大,右手柄在高转速、后部、中接触面积条件下振动值最大;左、右手柄出现最大振动值时,其时域和频域的结果不一致,测试时应在同一条件下进行比较才能说明问题。由此可见,将虚拟仪器应用于手柄三维振动的测试简单有效,具有实际应用价值。

       

      Abstract: In order to find a simple and practical method to test the three-dimensional vibration on the handles of hedge-trimmer, the virtual instrument was used to test the handles on the three-dimensional vibration to explore a new testing model so as to make it possible that ‘General Hardware + Software Designing = Multiple Sets of Special Testing Equipments’. The software of virtual instrument was designed to collect, display, and deal with test data timely and accurately, while the choice of testing programme identifies the influence levels caused by various factors, and the selection of general hardware reduced the use of dedicated hardwares. The test results showed that vibration values were related to rotate speed of engine, contact position and contact area. Vibration values of left handle were biggest at the moderate rotate speed, and in the middle of the handle and small contact area. And vibration values of right handle were biggest at the high rotate speed, and in the rear of the handle and moderate contact area. The maximum vibration values were different producing on the left and right handles in frequency domain and in time domain. In order to compare the results, we must test the vibration values in the same condition. The result proves that the virtual instrument is simple and effective when it is used to test the handles on three-dimensional vibration, and it has the value of practical application.

       

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