【摘要】：電液位置伺服系統(tǒng)作為控制領(lǐng)域中一個重要的組成部分，，具有功率大、響應(yīng)快、精度高的特點，在工業(yè)生產(chǎn)領(lǐng)域得到了廣泛的應(yīng)用。由于電液位置伺服系統(tǒng)是一結(jié)構(gòu)復(fù)雜而多耦合的機(jī)、電、液綜合系統(tǒng)，普遍存在非線性、時變性、不確定性，且系統(tǒng)精確的數(shù)學(xué)模型不易建立，應(yīng)用傳統(tǒng)的基于模型的控制理論不能很好的解決電液位置伺服系統(tǒng)存在的問題，因此迫切需要尋找新的控制策略。 本論文在傳統(tǒng)PID控制的基礎(chǔ)上，結(jié)合控制理論、人工智能理論和計算機(jī)科學(xué)，對全數(shù)字一體化角位移系統(tǒng)的控制策略進(jìn)行了較為深入的研究。 1．在傳遞函數(shù)建模理論的基礎(chǔ)上，構(gòu)建了電液位置伺服系統(tǒng)的數(shù)學(xué)模型，本文結(jié)合計算機(jī)仿真技術(shù)在電液位置伺服系統(tǒng)領(lǐng)域內(nèi)的發(fā)展，利用Simulink軟件模塊創(chuàng)建了電液位置伺服系統(tǒng)的仿真模型。利用LTIVIEW線性分析工具得出系統(tǒng)的開閉環(huán)BODE圖、階躍響應(yīng)曲線以及脈沖響應(yīng)曲線，根據(jù)曲線反映的特性參數(shù)，發(fā)現(xiàn)全數(shù)字一體化角位移控制系統(tǒng)存在如相位裕量較小、系統(tǒng)超調(diào)量較大、系統(tǒng)調(diào)定時間較長等缺陷，為下一步引入智能控制策略提供依據(jù)。 2．結(jié)合PID控制原理的發(fā)展方向，利用神經(jīng)網(wǎng)絡(luò)技術(shù)作為構(gòu)成智能控制器的基石，具體研究了多種PID控制算法如：增量式PID控制算法、積分分離PID控制算法、單神經(jīng)元自適應(yīng)PID控制算法以及BP神經(jīng)網(wǎng)絡(luò)PID控制算法，結(jié)合課題研究的實驗平臺——全數(shù)字一體化角位移控制系統(tǒng)，提出了一種帶有智能協(xié)調(diào)器集多種控制策略于一體的智能控制器。 3．利用MATLAB語言強(qiáng)大的圖形顯示、數(shù)據(jù)運算能力以及開放式的擴(kuò)展接口技術(shù)，以VC軟件作為二次開發(fā)的平臺，利用Matcom編輯器能夠?qū)文件自動轉(zhuǎn)換為等效功能的C++代碼技術(shù)以及Matcom提供的DLL接口函數(shù)，開發(fā)了各種PID控制算法的仿真模塊。這種方式保持了M程序文件強(qiáng)大的數(shù)學(xué)運算能力和圖形處理功能，同時又提高了系統(tǒng)代碼的執(zhí)行效率，減小了控制算法的調(diào)試難度，加快了智能控制系統(tǒng)的開發(fā)周期。 4．在以上研究的基礎(chǔ)上，構(gòu)建了適合全數(shù)字一體化角位移系統(tǒng)控制品質(zhì)需要的智能控制實驗?zāi)Ｐ停肰C平臺以及相關(guān)的虛擬儀器技術(shù)、DLL技術(shù)、ActiveX技術(shù)，開發(fā)了全數(shù)字一體化角位移智能控制CAT系統(tǒng)。
[Abstract]:As an important part of the control field, electro-hydraulic position servo system has the characteristics of large power, fast response and high precision. It has been widely used in the field of industrial production. Because the electro-hydraulic position servo system is a complex and multi-coupling mechanical, electrical, hydraulic integrated system, there are generally nonlinear, time-varying, uncertain, and the accurate mathematical model of the system is not easy to establish. The traditional model-based control theory can not solve the problem of electro-hydraulic position servo system, so it is urgent to find a new control strategy. Based on the traditional PID control theory, artificial intelligence theory and computer science, the control strategy of all-digital integrated angular displacement system is deeply studied in this paper. 1. Based on the theory of transfer function modeling, the mathematical model of electro-hydraulic position servo system is constructed. In this paper, the development of computer simulation technology in the field of electro-hydraulic position servo system is combined with the development of electro-hydraulic position servo system. The simulation model of electro-hydraulic position servo system is established by using Simulink software module. The open-closed loop BODE diagram, step response curve and pulse response curve of the system are obtained by using LTIVW linear analysis tool. According to the characteristic parameters reflected by the curve, it is found that the all-digital integrated angular displacement control system has a small phase margin. The large overshoot of the system and the long setting time of the system provide the basis for the introduction of intelligent control strategy in the next step. 2. Combining with the development direction of PID control principle, using neural network technology as the cornerstone of intelligent controller, this paper studies several PID control algorithms, such as incremental PID control algorithm and integral separation PID control algorithm. Single neuron adaptive PID control algorithm and BP neural network PID control algorithm, combined with the experimental platform-all-digital integrated angular displacement control system. In this paper, an intelligent controller with intelligent coordinator integrated with multiple control strategies is proposed. 3. With the powerful graphic display, data computing ability and open extended interface technology of MATLAB language, the VC software is used as the secondary development platform. The simulation modules of various PID control algorithms are developed by using the C code technology which can automatically convert M files into equivalent functions by Matcom editor and the DLL interface functions provided by Matcom. This method maintains the powerful mathematical operation ability and graphic processing function of M program file, improves the efficiency of system code execution, reduces the debugging difficulty of control algorithm, and speeds up the development cycle of intelligent control system. 4. On the basis of the above research, the intelligent control experiment model suitable for the control quality of all-digital integrated angular displacement system is constructed. The VC platform and the related virtual instrument technology, DLL technology and ActiveX technology are used. A fully digital integrated angle displacement intelligent control CAT system is developed.
【學(xué)位授予單位】：武漢科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2004
【分類號】：TH137

【引證文獻(xiàn)】

相關(guān)期刊論文 前1條

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相關(guān)碩士學(xué)位論文 前10條

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2 楊文強(qiáng);橋梁橡膠支座試驗機(jī)測控系統(tǒng)研究[D];西南交通大學(xué);2011年

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5 李罕v

本文編號：2452895