本文關(guān)鍵詞： 一次逆壓電效應(yīng) 二次正壓電效應(yīng) 微流量 自感知執(zhí)行器　出處：《黑龍江大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：目前廣泛采用的數(shù)字化微注射系統(tǒng)在進(jìn)行微流量注射時(shí),多采用手動(dòng)操作或基于壓電陶瓷的一次逆壓電效應(yīng)原理進(jìn)行定位、注射,存在著控制精度低及系統(tǒng)結(jié)構(gòu)比較復(fù)雜等缺點(diǎn)。因此研究在操作上簡(jiǎn)單方便、在精度控制上準(zhǔn)確的數(shù)字化微流量注射裝置成為發(fā)展生物工程的一個(gè)重要途徑。本課題來源于史麗萍教授的哈爾濱工業(yè)大學(xué)機(jī)器人技術(shù)與系統(tǒng)國(guó)家重點(diǎn)實(shí)驗(yàn)室開放研究項(xiàng)目(項(xiàng)目編號(hào):SKLRS-2015-MS-10)和黑龍江省教育廳的科學(xué)技術(shù)研究項(xiàng)目(項(xiàng)目編號(hào):12541624)。本文主要內(nèi)容是基于壓電陶瓷的數(shù)字化微注射理論及其應(yīng)用研究,通過理論和實(shí)驗(yàn)對(duì)壓電陶瓷的一次逆、二次正壓電效應(yīng)進(jìn)行分析,并利用其原理設(shè)計(jì)出自感知數(shù)字化微注射結(jié)構(gòu),主要包括兩方面內(nèi)容:基于一次逆、二次正壓電效應(yīng)自感知執(zhí)行器的理論研究和自感知微注射裝置的設(shè)計(jì)。首先,本文在經(jīng)典壓電學(xué)基礎(chǔ)理論的研究上,對(duì)壓電陶瓷特性、壓電方程分析、邊界條件關(guān)系進(jìn)行介紹,針對(duì)壓電陶瓷在不同的機(jī)械和電學(xué)邊界條件下的各次壓電效應(yīng)現(xiàn)象理論分析。然后基于壓電陶瓷的一次逆、二次正壓電效應(yīng)理論原理來建立以PZT-5壓電陶瓷為實(shí)驗(yàn)對(duì)象的實(shí)驗(yàn)結(jié)構(gòu),測(cè)量實(shí)驗(yàn)對(duì)象壓電陶瓷被施加外電壓的時(shí)候在一次逆壓電效應(yīng)下產(chǎn)生的位移值;設(shè)計(jì)實(shí)驗(yàn)結(jié)構(gòu)對(duì)二次正壓電效應(yīng)產(chǎn)生的電荷進(jìn)行分離和解耦來實(shí)現(xiàn)在同一壓電陶瓷上傳感器與執(zhí)行器的集成。將實(shí)驗(yàn)實(shí)際測(cè)量的輸出值與固定公式計(jì)算出的理論值進(jìn)行對(duì)比分析,驗(yàn)證理論的正確性及實(shí)驗(yàn)結(jié)構(gòu)方案設(shè)計(jì)的可行性。最后,根據(jù)上述理論研究與實(shí)驗(yàn)結(jié)果,設(shè)計(jì)出基于一次逆、二次正壓電效應(yīng)的數(shù)字化微注射裝置。通過壓電陶瓷在一次逆壓電效應(yīng)作用推動(dòng)注射器推桿實(shí)現(xiàn)流體流出,從而將一次逆位移量轉(zhuǎn)化為注射量;同時(shí)壓電體的二次正壓電效應(yīng)自感知此注射量,實(shí)現(xiàn)自感知微注射。對(duì)整體方案進(jìn)行設(shè)計(jì)并通過合理性實(shí)驗(yàn)驗(yàn)證。
[Abstract]:The digital microinjection system, which is widely used at present, usually uses manual operation or the principle of primary inverse piezoelectric effect based on piezoelectric ceramics to locate and inject. There are some disadvantages such as low control precision and complex system structure. Therefore, the research is simple and convenient in operation. An accurate digital micro-flow injection device in precision control has become an important way to develop bioengineering. This subject comes from Professor Shi Liping's State key Laboratory of Robotics and Systems of Harbin University of Technology and Technology. The R & D project (project number: SKLRS-2015-MS-10) and the science and technology research project of Heilongjiang Provincial Education Department (item No.: 12541624). The main content of this paper is the research of digital microinjection theory based on piezoelectric ceramics and its application. The primary inverse and secondary positive piezoelectric effects of piezoelectric ceramics are analyzed in theory and experiment, and the self-sensing digital microinjection structure is designed by using its principle, which mainly includes two aspects: based on the primary inversion, Theoretical study of Self-sensing Actuator with Quadratic positive piezoelectric effect and Design of Self-sensing Microinjection device. Firstly, the characteristics of piezoelectric ceramics, the analysis of piezoelectric equations, and the relationship between boundary conditions and the properties of piezoelectric ceramics are introduced in this paper. In this paper, the phenomena of piezoelectric effect under different mechanical and electrical boundary conditions are analyzed theoretically. Based on the theory of quadratic positive piezoelectric effect, the experimental structure of PZT-5 piezoelectric ceramics is established, and the displacement of the piezoelectric ceramics under the first inverse piezoelectric effect is measured when the external voltage is applied to the experimental object. The experimental structure was designed to separate and decouple the charge generated by the secondary positive piezoelectric effect to realize the integration of sensors and actuators on the same piezoelectric ceramics. Values are compared and analyzed, The correctness of the theory and the feasibility of the design of the experimental structure are verified. Finally, based on the above theoretical research and experimental results, the primary inverse is designed. A digital microinjection device with secondary positive piezoelectric effect. Through the action of piezoelectric ceramics in the primary inverse piezoelectric effect, the putter of the syringe is promoted to realize the fluid flow out, thus the primary inverse displacement is converted into the injection volume. At the same time, the quadratic positive piezoelectric effect of piezoelectric body self-perceives the injection volume and realizes the self-sensing micro-injection. The whole scheme is designed and verified by the rationality experiment.
【學(xué)位授予單位】：黑龍江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TQ174.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 鄭凱;陳杰;楊義勇;;壓電自適應(yīng)桁架結(jié)構(gòu)智能振動(dòng)控制[J];控制理論與應(yīng)用;2010年07期

，

本文編號(hào)：1555925