本文選題：滾動軸承 + DSP��； 參考：《河南科技大學(xué)》2012年碩士論文

【摘要】：滾動軸承是旋轉(zhuǎn)機械中使用最為普遍的基礎(chǔ)零件之一，其質(zhì)量的好壞將直接影響到機器的工作性能，嚴重時甚至會引起災(zāi)難性事故的發(fā)生。因此，為了保證軸承的質(zhì)量和人身安全，軸承在出廠前必須進行嚴格的在線檢測。目前，國內(nèi)外都很重視軸承生產(chǎn)的質(zhì)量問題，然而我國現(xiàn)有的一些振動測量儀檢測可靠性不高且檢測效率低下，不能滿足軸承生產(chǎn)廠家對大批量軸承的檢測需要。 本課題正是針對目前軸承振動檢測儀的不足而提出的。本系統(tǒng)是由DSP和FPGA兩大部分組成，DSP選用的是TI公司的TMS320C6713芯片，其高速的信號處理能力可以大大節(jié)約運算時間，提高測量的效率。FPGA選用的是Altera公司Cyclone II系列芯片EP2C5Q208C7，，主要進行一些邏輯功能控制。論文在開始先介紹了滾動軸承的振動機理和在時域、頻域中的分析方法，包括峰值、有效值、峰值因子、FFT和改進的STFT變換等。接著介紹了振動測量儀的硬件設(shè)計部分，結(jié)合系統(tǒng)檢測需要選取合適的元器件，完成硬件電路設(shè)計，并對一些模塊的電路和功能做了詳細介紹，主要包括AD數(shù)據(jù)采集電路、DSP外圍電路、USB電路、FPGA最小系統(tǒng)電路、電源電路等，完成硬件平臺的搭建。在此基礎(chǔ)上，論文介紹了測量儀的軟件設(shè)計部分，對部分模塊畫出程序流程圖或列出了主要設(shè)計程序。主要包括DSP中FLASH引導(dǎo)加載，PLL的初始化，AD數(shù)據(jù)采集的有限狀態(tài)機實現(xiàn)，F(xiàn)FT的DSP實現(xiàn)等，并按照國標GB/T24610.1-2009對軸承振動測量中三頻率帶的要求設(shè)計了Butterworth帶通數(shù)字濾波器，實現(xiàn)對軸承低、中、高三頻帶進行濾波處理，滿足國標中對振動軸承測量的要求。 最后，經(jīng)過軟硬件調(diào)試，將本系統(tǒng)用于軸承振動測試實驗中，通過實驗驗證了本軸承振動測量儀的正確性和實用性，其功能和性能符合國家標準的要求。
[Abstract]:Rolling bearing is one of the most widely used basic parts in rotating machinery. Its quality will directly affect the working performance of the machine and even cause catastrophic accidents when it is serious. Therefore, in order to ensure the bearing quality and personal safety, bearings must be strictly online inspection before leaving the factory. At present, much attention is paid to the quality of bearing production at home and abroad. However, some existing vibration measuring instruments in our country are not reliable and inefficient, which can not meet the needs of bearing manufacturers for mass bearing testing. This subject is aimed at the deficiency of bearing vibration detector at present. This system is composed of DSP and FPGA. The DSP is TMS320C6713 chip of TI company. Its high speed signal processing ability can save operation time greatly. To improve the efficiency of measurement. FPGA is selected by Altera company Cyclone II series chips EP2C5Q208C7, mainly for some logic function control. At the beginning of this paper, the vibration mechanism of rolling bearings and the analytical methods in time domain and frequency domain are introduced, including peak value, effective value, peak factor FFT and improved STFT transform. Secondly, the hardware design of the vibration measuring instrument is introduced. According to the need of system detection, the appropriate components are selected to complete the hardware circuit design, and the circuit and function of some modules are introduced in detail. It mainly includes AD data acquisition circuit, DSP peripheral circuit, USB circuit, FPGA minimum system circuit, power circuit and so on. The hardware platform is built. On this basis, the paper introduces the software design of the measuring instrument, drawing the program flow chart or listing the main design program for some modules. This paper mainly includes the realization of FFT based on the finite state machine (FSM) of initialization and AD data acquisition of flash loading PLL in DSP, and designs Butterworth band-pass digital filter according to GB / T24610.1-2009 requirement of three frequency band in bearing vibration measurement, which realizes low bearing. The medium and high frequency bands are filtered to meet the requirement of vibration bearing measurement in national standard. Finally, the system is used in the bearing vibration test experiment after the debugging of software and hardware. The correctness and practicability of the bearing vibration measuring instrument are verified by the experiment, and its function and performance meet the requirements of the national standard.
【學(xué)位授予單位】：河南科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH133.33;TH825

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本文編號：2087461