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1. Electrical analog instruments , panel board types
   配電板式電子模擬設(shè)備
2. At present the identification signal of rolling bearing is based on analog monitoring system composed of analog instrument such as fft analyzer , amplitude analyzer and so on . the system has the shortcoming as follows : not enough friendly user interface , unitary function , under abundant analytical contents , poor generality , long developing period , high cost and so forth
   目前對(duì)滾動(dòng)軸承信號(hào)識(shí)別主要采用模擬監(jiān)測(cè)系統(tǒng)，系統(tǒng)均由模擬量?jī)x器組成，如fft分析儀、幅值分析儀電平記錄儀等，系統(tǒng)存在操作界面不夠友好，功能單一，分析內(nèi)容欠豐富、通用性差、開(kāi)發(fā)周期長(zhǎng)、成本高等缺點(diǎn)。
3. The design of high - voltage circuit based on pwm technology is briefly described . the closed - loop current control theory using analog instruments is fully discussed , followed which is that using digital instruments . it is an important part that the hardware and software design of the single chip - two arms and two chips - two arms current control circuits with a new chip applicable to digital current control system
   簡(jiǎn)單介紹了基于開(kāi)關(guān)電源技術(shù)的高壓電路設(shè)計(jì)；詳細(xì)講述了模擬穩(wěn)流電源的閉環(huán)穩(wěn)流原理，并在此基礎(chǔ)上討論了利用數(shù)字電路實(shí)現(xiàn)穩(wěn)流的原理及可能性；選擇出適合數(shù)字穩(wěn)流系統(tǒng)的新型芯片，完成了單片雙路穩(wěn)流系統(tǒng)、雙片雙路穩(wěn)流系統(tǒng)的軟硬件設(shè)計(jì)；給出了一種簡(jiǎn)單易實(shí)現(xiàn)的比例?積分控制程序。
4. Furthermore , the strongly functional programming language labwindows / cvi is well used . the paper is based on the deep analysis of rolling bearing identification technology which is made up of analog instruments . a suit of rolling bearing identification signal virtual instrument has been found with which some representative failure of gb6309 type of rolling bearing on the omnipotent lab desk in testing laboratory have been measured and diagnosed
   本論文在深入分析研究以模擬儀器為基礎(chǔ)的滾動(dòng)軸承診斷技術(shù)的基礎(chǔ)上，應(yīng)用現(xiàn)代先進(jìn)的虛擬儀器技術(shù)，合理選用傳感器、信號(hào)調(diào)理器及a / d轉(zhuǎn)換板等硬件，采用具有強(qiáng)大功能的虛擬儀器編程語(yǔ)言： labwindows / cvi平臺(tái)，編寫(xiě)了一系列功能軟件和軟面板，成功地研制和組建了一套滾動(dòng)軸承信號(hào)識(shí)別及工況監(jiān)測(cè)虛擬儀器，并利用所研制的虛擬儀器，在測(cè)試實(shí)驗(yàn)室萬(wàn)能實(shí)驗(yàn)臺(tái)上對(duì)若干gb6309型號(hào)深溝滾動(dòng)軸承的幾種典型故障進(jìn)行了實(shí)際檢測(cè)與診斷，收到了滿意的效果。
5. In this system , the movement of the step - electromotor is controlled by computer , and then the dial pointer is drove by the step - electromotor . at the same time , these images of the analog instrument are took by high precision ccd video , and then these images will be processed by the computer , using some image - processing algorithms such as image segmentations , threshold identification , image binarization , areas labeling , dial center - point identification , useful areas identification & abstracting , and areas thinning , etc . followed this , the dial pointer of the “ circle ” is able to be located . at last , the dial pointer position will be recognized by the computer
   本系統(tǒng)由計(jì)算機(jī)控制步進(jìn)電動(dòng)機(jī)的運(yùn)動(dòng),進(jìn)而驅(qū)動(dòng)指針式儀表表針的運(yùn)動(dòng),并且通過(guò)高精度ccd攝像機(jī)實(shí)時(shí)獲取表盤(pán)圖像數(shù)據(jù),同時(shí)進(jìn)行表盤(pán)圖像的相關(guān)處理,包括圖像分割,閾值確定,圖像二值化,區(qū)域標(biāo)記算法,圓心擬合,有效區(qū)域識(shí)別提取,區(qū)域細(xì)化等,最終快速識(shí)別出表盤(pán)指針?biāo)幬恢?最后,根據(jù)國(guó)家指針式儀表類(lèi)檢定規(guī)程所制定的算法計(jì)算出該儀表的相關(guān)誤差,檢定指針式儀表的各種精度,通過(guò)這些數(shù)據(jù)判斷該儀表是否合格,打印該儀表的檢定結(jié)果報(bào)表。