本文關鍵詞： 變轉速節(jié)流復合調速 控制策略 模糊PID 聯(lián)合仿真 測控系統(tǒng)　出處：《安徽理工大學》2011年碩士論文　論文類型：學位論文

【摘要】：變轉速節(jié)流復合調速是在變頻泵控馬達液壓動力傳動基礎上發(fā)展起來的新型液壓調速方式。它將變轉速調速與節(jié)流調速相結合,不但具有良好的節(jié)能性和可靠性,同時克服了變轉速液壓調速系統(tǒng)存在動態(tài)響應慢、低速特性差等缺點,因此被廣泛研究。針對復合調速較為復雜的系統(tǒng)結構必須探索和研究對應的控制策略和算法,從而建立行之有效的控制系統(tǒng)。論文研究了液壓系統(tǒng)的運行機理、控制策略,并且采用模糊PID控制算法設計了一套變轉速節(jié)流復合調速系統(tǒng)的控制系統(tǒng),建立了實驗臺測控平臺,并且完成了控制系統(tǒng)的仿真和實驗研究。 本文介紹了液壓調速回路基本形式和特點,闡述了變轉速液壓技術、電液測控技術和模糊控制技術的概況和發(fā)展趨勢。針對本液壓實驗系統(tǒng),分析和總結了變轉速節(jié)流復合調速系統(tǒng)的控制策略以及模糊PID控制算法。利用AMESim搭建了仿真系統(tǒng),同時通過AMESim和Simulink聯(lián)合建模與仿真對系統(tǒng)的控制部分進行了研究,設計了遵循復合控制策略且包含模糊控制算法的控制器。進而基于虛擬儀器技術和模塊化設計方法完成了液壓測控系統(tǒng)的開發(fā),數(shù)據采集部分闡述了數(shù)據采樣還原和DAQmx的測量架構,它采用測量單個脈沖幅寬的方法來測量馬達轉速,并利用一系列的數(shù)據處理方法得到理想的結果。在控制器模塊部分則主要實現(xiàn)了在LabVIEW中數(shù)字PID控制程序和模糊控制器的設計；視頻監(jiān)視模塊和網絡通信模塊使系統(tǒng)的信息化水平更高。 運用以上建立的聯(lián)合仿真系統(tǒng)和實驗平臺測控系統(tǒng),論文進行了大量的仿真與實驗研究。結果表明：泵控馬達變轉速節(jié)流復合調速系統(tǒng)與傳統(tǒng)液壓調速系統(tǒng)相比在控制和節(jié)能方面具有明顯優(yōu)越性,新的復合控制策略和模糊控制算法更進一步提高了復合調速系統(tǒng)的控制特性。圖[67]表[9]參[64]
[Abstract]:Variable speed throttling compound speed regulation is a new hydraulic speed regulation method developed on the basis of variable frequency pump controlled motor hydraulic power drive. It combines variable speed speed regulation with throttling speed regulation. It not only has good energy saving and reliability, but also overcomes the shortcomings of variable speed hydraulic speed regulation system, such as slow dynamic response and poor low speed characteristic. Therefore, it is widely studied. In view of the complex system structure of compound speed regulation, the corresponding control strategy and algorithm must be explored and studied, so as to establish an effective control system. The paper studies the operation mechanism of hydraulic system. The control strategy and fuzzy PID control algorithm are used to design a control system of variable speed and throttling compound speed control system. The test platform is established and the simulation and experimental research of the control system is completed. This paper introduces the basic form and characteristics of hydraulic speed regulating circuit, and expounds the general situation and development trend of variable speed hydraulic technology, electro-hydraulic measurement and control technology and fuzzy control technology. The control strategy and fuzzy PID control algorithm of variable speed throttling compound speed control system are analyzed and summarized. The simulation system is built with AMESim. At the same time, the control part of the system is studied through the joint modeling and simulation of AMESim and Simulink. The controller which follows the compound control strategy and contains the fuzzy control algorithm is designed, and the hydraulic measurement and control system is developed based on the virtual instrument technology and the modular design method. In the part of data acquisition, the measurement architecture of data sampling and restoring and DAQmx is introduced. It uses the method of measuring the width of single pulse to measure the speed of motor. A series of data processing methods are used to obtain the ideal results. In the controller module, the design of digital PID control program and fuzzy controller in LabVIEW is mainly realized. Video monitoring module and network communication module make the information level of the system higher. Using the above established joint simulation system and experimental platform measurement and control system. A large number of simulation and experimental studies have been carried out in this paper. The results show that the pump control motor variable speed throttling compound speed control system is superior to the traditional hydraulic speed control system in terms of control and energy saving. The new compound control strategy and fuzzy control algorithm further improve the control characteristics of the compound speed control system. [67 tables. [9 reference. [64]
【學位授予單位】：安徽理工大學
【學位級別】：碩士
【學位授予年份】：2011
【分類號】：TH137

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