本文選題：連鑄結(jié)晶器 + 位移跟蹤��； 參考：《燕山大學》2015年碩士論文

【摘要】：連鑄結(jié)晶器是連鑄生產(chǎn)中的關(guān)鍵設備,連鑄結(jié)晶器按期望的非正弦或正弦波形振動能有效提高拉坯速度和鑄坯質(zhì)量。伺服電機驅(qū)動的連鑄結(jié)晶器振動位移系統(tǒng)是一種非線性控制系統(tǒng),而且系統(tǒng)不可避免地存在不確定性,這些不確定性和非線性會對結(jié)晶器的實際振動波形產(chǎn)生較大影響。因此,為保證結(jié)晶器能夠精確地跟蹤期望的振動波形規(guī)律,本文以伺服電機驅(qū)動的連鑄結(jié)晶器振動系統(tǒng)為研究對象,針對結(jié)晶器的位移跟蹤問題進行了模糊控制以及仿真研究,并進行了相關(guān)的實驗研究。首先,針對伺服電機驅(qū)動的連鑄結(jié)晶器振動系統(tǒng)的位移跟蹤問題,設計了一種模糊自整定PID控制器,通過模糊邏輯對結(jié)晶器位置環(huán)PID控制器的比例、積分、微分系數(shù)進行在線調(diào)節(jié),并通過與常規(guī)PID控制的對比仿真驗證了所設計控制器的有效性。其次,針對伺服電機驅(qū)動的連鑄結(jié)晶器振動系統(tǒng)的位移跟蹤問題,設計了一種自適應模糊反步滑�？刂破�。結(jié)合反步法和非奇異終端滑模的控制方法,進行了控制器的設計,并對系統(tǒng)中的不確定性擾動進行了模糊逼近以及前饋補償。仿真結(jié)果以及與模糊自整定PID控制的對比表明所設計的控制器具有較高的位移跟蹤控制精度。最后,基于實驗室搭建的伺服電機驅(qū)動的連鑄結(jié)晶器模擬振動臺系統(tǒng),在FB Generator軟件平臺基礎上,采用C語言編程實現(xiàn)了模糊控制功能,并封裝為CFC(Continuous Function Chart)模糊控制模塊,進而對PID控制器參數(shù)自調(diào)整,并進行了結(jié)晶器位移的模糊自整定PID控制實驗研究。實驗結(jié)果表明,所設計的模糊自整定PID控制器可保證結(jié)晶器的位移精確跟蹤給定的波形,保證了結(jié)晶器振動波形規(guī)律的實現(xiàn)。
[Abstract]:Continuous casting crystallizer is the key equipment in continuous casting production. The continuous casting crystallizer can effectively improve the casting speed and casting quality. The vibration displacement system of the continuous casting mould driven by the servo motor is a nonlinear control system, and the uncertainty of the system can not be avoided. These uncertainties are indeterminate. In order to ensure that the crystallizer can accurately track the desired vibration waveform, the vibration system of the continuous casting crystallizer driven by the servo motor is used as the research object, and the fuzzy control and simulation research are carried out on the displacement tracking questions of the crystallizer. First, a fuzzy self-tuning PID controller is designed for the displacement tracking problem of the vibration system of the continuous casting crystallizer driven by the servo motor. Through fuzzy logic, the proportion, integral and differential coefficient of the PID controller of the mold position ring are adjusted online, and the simulation is verified by comparison with the conventional PID control. The effectiveness of the designed controller is given. Secondly, an adaptive fuzzy backstepping sliding mode controller is designed for the problem of the displacement tracking of the vibration system of the continuous casting mould driven by a servo motor. The controller is set up with the control method of the back step method and the non singular terminal sliding mode, and the uncertain disturbance in the system is carried out. Fuzzy approximation and feedforward compensation. The simulation results and the comparison with the fuzzy self-tuning PID control show that the designed controller has a high precision of displacement tracking control. Finally, the simulation shaking table system based on the servo motor driven by the laboratory is based on the C language programming on the basis of the FB Generator software platform. The fuzzy control function is realized and the fuzzy control module of CFC (Continuous Function Chart) is encapsulated. The parameters of the PID controller are self adjusted, and the fuzzy self-tuning PID control experiment of the mold displacement is carried out. The experimental results show that the designed fuzzy self-tuning PID controller can ensure the precise tracking of the displacement of the crystallizer. The waveform ensures the realization of the mold vibration waveform.

【學位授予單位】：燕山大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TG233.6;TP273

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