本文選題：時柵位移傳感器　切入點：動態(tài)測量　出處：《重慶理工大學(xué)》2013年碩士論文

【摘要】：時柵位移傳感器是一種擁有自主知識產(chǎn)權(quán)的全新位移傳感器。目前，時柵在靜態(tài)和低速條件下測量的應(yīng)用中，已經(jīng)實現(xiàn)了較好的精度和分辨率。但在高速動態(tài)測量中，對時柵傳感器的時間響應(yīng)特性提出了新的要求，存在例如采樣波形規(guī)律不明顯、波形出現(xiàn)尖端脈沖等現(xiàn)象，導(dǎo)致動態(tài)誤差的產(chǎn)生和精度的下降。研究時柵高速動態(tài)測量中存在的問題，對進(jìn)一步提高時柵的測量精度，推動其產(chǎn)業(yè)化發(fā)展具有重要的理論意義和現(xiàn)實意義。 本論文在國家自然科學(xué)基金項目“基于誤差轉(zhuǎn)換的時柵角位移傳感器自標(biāo)定和自校準(zhǔn)方法研究”的資助下，針對上述問題，開展了時柵位移傳感器在動態(tài)測量條件下實現(xiàn)高精度高分辨率測量的研究。 首先，對提高傳感器動態(tài)性能的三種方法進(jìn)行深入分析，結(jié)合時柵傳感器的工作原理，在測量機(jī)理方面增加動測頭的數(shù)量，，硬件方面利用時鐘倍頻和時鐘分相技術(shù)提高時間測量分辨率，軟件方面將細(xì)分插補算法應(yīng)用于數(shù)據(jù)處理，以提高時柵傳感器的動態(tài)測量性能。重點研究采用軟件方法來提高傳感器的動態(tài)性能。構(gòu)建了細(xì)分插補算法模型。 其次，設(shè)計了實現(xiàn)該模型的硬件電路，該電路以FPGA為核心，主要包括A/D采樣模塊、D/A轉(zhuǎn)換模塊、放大濾波、顯示和USB通訊模塊等。構(gòu)建了高分辨率A/D和高速運算系統(tǒng)。 然后，設(shè)計了實現(xiàn)該模型的軟件，對采集到的時柵感應(yīng)信號數(shù)據(jù)進(jìn)行分析和處理，準(zhǔn)確快速地實現(xiàn)了時間差的測量，進(jìn)而實現(xiàn)位移的動態(tài)精確測量。 最后，建立了實驗系統(tǒng)，對硬件和軟件進(jìn)行了實驗調(diào)試，實驗表明硬件和軟件達(dá)到了設(shè)計要求，與時柵傳感器傳統(tǒng)的數(shù)據(jù)處理方法相比，簡化了數(shù)據(jù)處理的硬件電路和軟件。目前時柵傳感器將激勵信號頻率從400Hz提高到20KHz，實現(xiàn)了測量分辨率可以達(dá)到0.09″。
[Abstract]:Time grating displacement sensor is a new displacement sensor with independent intellectual property rights.At present, the time grating has achieved better precision and resolution in static and low speed measurement applications.However, in high speed dynamic measurement, a new requirement is put forward for the time response characteristics of the time grating sensor. For example, the sampling waveform is not obvious, the waveform has a sharp pulse and so on, which leads to the dynamic error and the decrease of the precision.It is of great theoretical and practical significance to study the problems existing in the high speed dynamic measurement of the time grating for further improving the measuring accuracy of the time grating and promoting the development of its industrialization.This paper is supported by the National Natural Science Foundation of China "Research on Self-calibration and Self-Calibration method of Time-grating angular displacement Sensor based on error conversion", aiming at the above problems.The research of high precision and high resolution measurement of time grating displacement sensor under dynamic measurement condition is carried out.First of all, three methods to improve the dynamic performance of the sensor are analyzed in depth. Combined with the working principle of the time-grating sensor, the number of the dynamic probe is increased in terms of the measurement mechanism.In hardware, clock frequency doubling and clock phase separation techniques are used to improve the time measurement resolution. In software, the subdivision interpolation algorithm is applied to the data processing to improve the dynamic measurement performance of the time grating sensor.Emphasis is placed on the use of software to improve the dynamic performance of the sensor.A subdivision interpolation algorithm model is constructed.Secondly, the hardware circuit is designed to realize the model. The circuit is based on FPGA, which includes A / D sampling module, D / A conversion module, amplifying filter, display and USB communication module, etc.A high resolution A / D and a high speed computing system are constructed.Then, the software to realize the model is designed to analyze and process the collected data of the time-grid induction signal, to accurately and quickly realize the measurement of the time difference, and then to realize the dynamic accurate measurement of the displacement.Finally, the experiment system is established and the hardware and software are debugged. The experiment shows that the hardware and software meet the design requirements. Compared with the traditional data processing method of the time-grating sensor, the hardware circuit and software of the data processing are simplified.At present, the frequency of excitation signal is increased from 400Hz to 20kHz, and the measurement resolution can reach 0.09 ".
【學(xué)位授予單位】：重慶理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TP212;TP274

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 陳敬泉,爾聯(lián)潔,劉正華,吳云潔;基于感應(yīng)同步器的高速高精度位置測量技術(shù)[J];北京航空航天大學(xué)學(xué)報;2005年04期

2 孫立寧,晏祖根;電容式微位移傳感器設(shè)計及其應(yīng)用研究[J];傳感器技術(shù);2005年10期

3 林洪樺;動態(tài)測試誤差的系統(tǒng)建模與混合譜分析法[J];計量學(xué)報;1986年02期

4 徐靜,曾志新,劉桂雄;提高傳感器動態(tài)特性方法分析[J];機(jī)電工程技術(shù);2002年05期

5 彭東林,劉成康,譚為民;圓分度靜態(tài)精密測量新方法[J];機(jī)械工程學(xué)報;2000年12期

6 彭東林;劉小康;張興紅;陳錫侯;;高精度時柵位移傳感器研究[J];機(jī)械工程學(xué)報;2005年12期

7 才海男,周兆英,李勇,張文棟;微硅加速度傳感器的動態(tài)特性補償方法研究[J];宇航計測技術(shù);1998年02期

8 彭東林,劉成康,譚為民;時空坐標(biāo)轉(zhuǎn)換理論與時柵位移傳感器研究[J];儀器儀表學(xué)報;2000年04期

9 彭東林,劉成康,譚為民;差頻式時柵位移傳感器研究[J];儀器儀表學(xué)報;2001年05期

10 彭東林,張興紅,劉小康,譚為民;場式時柵位移傳感器研究[J];儀器儀表學(xué)報;2003年03期

本文編號：1719350