發(fā)布時(shí)間：2018-07-20 18:35

【摘要】：針對(duì)超聲電機(jī)直接驅(qū)動(dòng)的顯微鏡物鏡為滿(mǎn)足系統(tǒng)整體結(jié)構(gòu)緊湊、快速和準(zhǔn)確定位的需求,采用小型光電耦合器設(shè)計(jì)了位置檢測(cè)傳感器,配合遮擋片實(shí)現(xiàn)了物鏡位置和物鏡轉(zhuǎn)換器運(yùn)動(dòng)方向的檢測(cè)。采用傳統(tǒng)比例-積分-微分控制(proportion-integral-derivative control,簡(jiǎn)稱(chēng)PID)和模糊控制提出了并行切換控制策略,將兩者結(jié)合建立了宏微相融合的預(yù)測(cè)控制方法,實(shí)現(xiàn)了物鏡轉(zhuǎn)換器的高精度、快速切換控制。在嵌入式控制系統(tǒng)中實(shí)現(xiàn)了所設(shè)計(jì)的控制算法和策略,并進(jìn)行了物鏡自動(dòng)切換控制實(shí)驗(yàn)。實(shí)驗(yàn)結(jié)果顯示,采用筆者提出的定位結(jié)構(gòu)和控制方法,電動(dòng)物鏡轉(zhuǎn)換器的重復(fù)定位誤差小于0.015°,定位時(shí)間小于3s,滿(mǎn)足自動(dòng)顯微鏡系統(tǒng)中對(duì)電動(dòng)物鏡轉(zhuǎn)換器重復(fù)定位精度的要求。
[Abstract]:In order to meet the need of compact, fast and accurate positioning of the system, a position detection sensor is designed by using a small photoelectric coupler, which is directly driven by an ultrasonic motor. The position of the objective lens and the moving direction of the objective converter are detected with the occluder. The parallel switching control strategy is proposed by using the traditional proportion-integral-derivative control (pid) and fuzzy control. A predictive control method combining macro and micro is established. The high precision and fast switching control of the objective lens converter is realized. The designed control algorithm and strategy are implemented in the embedded control system, and the objective lens automatic switching control experiment is carried out. The experimental results show that by using the positioning structure and control method proposed by the author, the repeat positioning error of the electric objective lens converter is less than 0.015 擄and the positioning time is less than 3 s, which meets the requirements of the precision of the electric objective lens converter in the automatic microscope system.
【作者單位】： 南京航空航天大學(xué)機(jī)械結(jié)構(gòu)力學(xué)及控制國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金重大研究計(jì)劃資助項(xiàng)目(91223201);國(guó)家自然科學(xué)基金面上資助項(xiàng)目(51575260) 南京航空航天大學(xué)科研基地創(chuàng)新創(chuàng)優(yōu)基金資助項(xiàng)目(NJ20160001) 江蘇高校優(yōu)勢(shì)學(xué)科建設(shè)工程基金資助項(xiàng)目
【分類(lèi)號(hào)】：TH742

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