【摘要】：篩分機械中基于轉(zhuǎn)子耦合原理的自同步振動篩,各電機間均無直接連接,其結(jié)構(gòu)簡單、工作可靠并便于維修,正逐步替代采用齒輪或同步帶傳動的強迫同步振動篩。對于該類轉(zhuǎn)子耦合自同步振動篩,國內(nèi)外學者先后采用哈密頓原理、平均小參數(shù)法、龐加萊法、能量法對其同步性能進行了深入探討,并提出了評定同步機械系統(tǒng)自同步性能的直接物理量是偏心電機轉(zhuǎn)子同步相位差角的大小,而現(xiàn)階段對該類自同步振動篩同步相位差角的測試研究卻止步于傳統(tǒng)的拍攝法及直接轉(zhuǎn)速測試法。本文針對傳統(tǒng)測試方法的不足提出了一種新的同步相位差角間接測試方法,分別從理論、仿真和實驗三個角度出發(fā),對雙電機、三電機自同步振動篩同步相位差角的間接測試方法進行研究,完成了以下工作:(1)鑒于現(xiàn)有成熟的自同步理論,利用龐加萊法和平均小參數(shù)法分別研究了雙電機和三電機自同步振動系統(tǒng)的同步行為,并根據(jù)自同步振動篩篩箱上任意點與其質(zhì)心間的運動關系建立了相應的自同步振動篩同步相位差角的間接測試理論模型,同時編寫了自同步相位差角的計算分析程序。(2)根據(jù)所推導出的理論模型,利用MATLAB\Simulink中異步感應電動機仿真模塊和方程微積分模塊建立了機電耦合動力學模型,通過計算機模擬仿真技術(shù)手段驗證了同步相位差角間接測試分析方法的正確性,并確定了測點的布置方案。(3)利用PTC Creo三維軟件設計了雙電機、三電機自同步橢圓振動篩三維模型,并加工了相應的實驗樣機;此外基于Matlab\GUI界面設計了實驗數(shù)據(jù)處理分析系統(tǒng),以便于動態(tài)測試實驗數(shù)據(jù)的高效分析與管理。(4)同時展開了間接測試實驗和高速攝像儀對比實驗,分別利用實驗數(shù)據(jù)處理分析系統(tǒng)和AutoCAD定量分析得到同步相位差角值,對照分析了兩實驗結(jié)果并驗證了該同步相位差角間接測試方法的可行性。
[Abstract]:The self-synchronous vibrating screen based on the rotor coupling principle in the screening machine has no direct connection between the motors. The structure is simple, the work is reliable and easy to maintain, and the forced synchronous vibrating screen with gear or synchronous belt transmission is being replaced step by step. For this kind of rotor coupling self-synchronous vibrating screen, domestic and foreign scholars have adopted Hamiltonian principle, average small parameter method, Poincare method and energy method to discuss its synchronization performance. It is proposed that the direct physical quantity for evaluating the self-synchronization performance of the synchronous mechanical system is the magnitude of the synchronous phase difference angle of the rotor of the eccentric motor. At present, the research on the synchronous phase difference angle of this kind of self-synchronous vibrating screen stops at the traditional shooting method and the direct rotational speed test method. In this paper, a new indirect measurement method of synchronous phase difference angle is put forward, which is based on the theory, simulation and experiment. The indirect measurement method of synchronous phase difference angle of three-motor self-synchronous vibrating screen has been studied. The following work has been accomplished: (1) in view of the existing mature self-synchronization theory, By using the Poincare method and the average small parameter method, the synchronous behavior of the self-synchronous vibration system with two motors and three motors is studied respectively. According to the motion relation between any point on the self-synchronous vibrating screen box and its center of mass, an indirect measurement model of the synchronous phase difference angle of the self-synchronous vibrating screen is established. At the same time, the calculation and analysis program of the self-synchronous phase difference angle is compiled. (2) according to the theoretical model derived, the electromechanical coupling dynamics model is established by using the simulation module of asynchronous induction motor and the equation calculus module in MATLAB\ Simulink. The accuracy of the indirect measurement and analysis method of synchronous phase difference angle is verified by means of computer simulation and simulation technology. (3) double motor is designed by using PTC Creo software. The three dimensional model of three motor self-synchronous elliptic vibrating screen and the corresponding experimental prototype are machined. In addition, the experimental data processing and analysis system is designed based on Matlab\ GUI interface. In order to facilitate the efficient analysis and management of the dynamic test data. (4) the indirect test experiment and the contrast experiment of high-speed camera are carried out at the same time. The synchronous phase difference angle is obtained by using the experimental data processing and analysis system and AutoCAD quantitative analysis, respectively. The results of two experiments were compared and the feasibility of the indirect measurement method of synchronous phase difference angle was verified.
【學位授予單位】：西南石油大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TH237.6

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